Initial dataset release

Co-authored-by: htsou23 <htsou23@users.noreply.huggingface.co>
Co-authored-by: qianlim <qianlim@users.noreply.huggingface.co>

.gitattributes

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+*.7z filter=lfs diff=lfs merge=lfs -text
+*.arrow filter=lfs diff=lfs merge=lfs -text
+*.avro filter=lfs diff=lfs merge=lfs -text
+*.bin filter=lfs diff=lfs merge=lfs -text
+*.bz2 filter=lfs diff=lfs merge=lfs -text
+*.ckpt filter=lfs diff=lfs merge=lfs -text
+*.ftz filter=lfs diff=lfs merge=lfs -text
+*.gz filter=lfs diff=lfs merge=lfs -text
+*.h5 filter=lfs diff=lfs merge=lfs -text
+*.joblib filter=lfs diff=lfs merge=lfs -text
+*.lfs.* filter=lfs diff=lfs merge=lfs -text
+*.lz4 filter=lfs diff=lfs merge=lfs -text
+*.mds filter=lfs diff=lfs merge=lfs -text
+*.mlmodel filter=lfs diff=lfs merge=lfs -text
+*.model filter=lfs diff=lfs merge=lfs -text
+*.msgpack filter=lfs diff=lfs merge=lfs -text
+*.npy filter=lfs diff=lfs merge=lfs -text
+*.npz filter=lfs diff=lfs merge=lfs -text
+*.onnx filter=lfs diff=lfs merge=lfs -text
+*.ot filter=lfs diff=lfs merge=lfs -text
+*.parquet filter=lfs diff=lfs merge=lfs -text
+*.pb filter=lfs diff=lfs merge=lfs -text
+*.pickle filter=lfs diff=lfs merge=lfs -text
+*.pkl filter=lfs diff=lfs merge=lfs -text
+*.pt filter=lfs diff=lfs merge=lfs -text
+*.pth filter=lfs diff=lfs merge=lfs -text
+*.rar filter=lfs diff=lfs merge=lfs -text
+*.safetensors filter=lfs diff=lfs merge=lfs -text
+saved_model/**/* filter=lfs diff=lfs merge=lfs -text
+*.tar.* filter=lfs diff=lfs merge=lfs -text
+*.tar filter=lfs diff=lfs merge=lfs -text
+*.tflite filter=lfs diff=lfs merge=lfs -text
+*.tgz filter=lfs diff=lfs merge=lfs -text
+*.wasm filter=lfs diff=lfs merge=lfs -text
+*.xz filter=lfs diff=lfs merge=lfs -text
+*.zip filter=lfs diff=lfs merge=lfs -text
+*.zst filter=lfs diff=lfs merge=lfs -text
+*tfevents* filter=lfs diff=lfs merge=lfs -text
+# Audio files - uncompressed
+*.pcm filter=lfs diff=lfs merge=lfs -text
+*.sam filter=lfs diff=lfs merge=lfs -text
+*.raw filter=lfs diff=lfs merge=lfs -text
+# Audio files - compressed
+*.aac filter=lfs diff=lfs merge=lfs -text
+*.flac filter=lfs diff=lfs merge=lfs -text
+*.mp3 filter=lfs diff=lfs merge=lfs -text
+*.ogg filter=lfs diff=lfs merge=lfs -text
+*.wav filter=lfs diff=lfs merge=lfs -text
+# Image files - uncompressed
+*.bmp filter=lfs diff=lfs merge=lfs -text
+*.gif filter=lfs diff=lfs merge=lfs -text
+*.png filter=lfs diff=lfs merge=lfs -text
+*.tiff filter=lfs diff=lfs merge=lfs -text
+# Image files - compressed
+*.jpg filter=lfs diff=lfs merge=lfs -text
+*.jpeg filter=lfs diff=lfs merge=lfs -text
+*.webp filter=lfs diff=lfs merge=lfs -text
+# Video files - compressed
+*.mp4 filter=lfs diff=lfs merge=lfs -text
+*.webm filter=lfs diff=lfs merge=lfs -text

README.md

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+---
+license: openmdw-1.1
+language:
+  - en
+tags:
+  - video
+  - autonomous-driving
+  - simulation
+  - multiview
+configs:
+  - config_name: default
+    drop_labels: true
+    data_files:
+      - split: test
+        path:
+          - wsm/*/*.mp4
+          - metadata.jsonl
+---
+
+# Cosmos3 Driving Simulation Evaluation
+
+## Dataset Summary
+
+This dataset contains **91 driving scenes** with **11 camera views per scene**:
+1,001 World Scenario Map (WSM) control videos and 1,001 matching timestamped
+caption JSON files.
+
+## Dataset Description
+
+The dataset provides structured scene controls and text prompts for multiview
+driving generation and evaluation. The WSM controls are derived from real-world
+driving data collected by NVIDIA and represent lane lines, object bounding
+boxes, and traffic-light states.
+
+**Included:** WSM 4.0.1 rendered control videos, per-camera captions, scene/view
+manifests, measured video properties, and file checksums.
+
+**Not included:** source RGB camera images or videos, LiDAR data, calibration,
+raw scene annotations, or model-generated outputs. WSM videos are abstract
+renderings of scene structure, not camera recordings. Original or restyled
+first-frame images are not included.
+
+The released manifest identifies no separate standard or long-rollout subsets;
+control videos are 11.7–21.9 seconds long.
+
+## Dataset Owner(s)
+
+NVIDIA Corporation
+
+## Dataset Creation Date
+
+2026-10-20
+
+## Versioning
+
+V1.0
+
+No previous version.
+
+## License/Terms of Use
+
+This dataset is released under the [OpenMDW License Agreement, version 1.1
+(OpenMDW-1.1)](https://openmdw.ai/license/1-1/).
+
+## Intended Usage
+
+This dataset is intended for autonomous vehicle-related use cases only, including
+both commercial and non-commercial use in accordance with the applicable license
+terms. Its size and distribution across camera views support synthetic driving
+scene evaluation.
+
+Public text-to-video evaluation of Cosmos driving simulation using WSM controls
+and accompanying text prompts. Specifically:
+
+- evaluating Cosmos3 driving simulation conditioned on WSM controls.
+
+This dataset is not intended for training perception or driving models.
+
+## Dataset Characterization
+
+**Data Collection Method:** Automatic/Sensors.
+
+Sensor-collected driving data is processed into WSM controls.
+
+**Labeling Method:** Automated.
+
+Human reviewers provide quality assurance for the automated annotations. Processing steps:
+
+1. NVIDIA in-house models annotate lane lines and object bounding boxes on the source footage.
+2. Human reviewers check the annotations for quality.
+3. A script converts the reviewed annotations into WSM controls.
+4. An internal NVIDIA caption model generates a text caption per camera view, used as a text prompt for evaluation.
+5. All camera imagery is discarded. Only the WSM controls and text prompts are released.
+
+## Dataset Format
+
+**Modality:** Video and Text.
+
+WSM control videos in mp4 format, at 30fps. Each video shows the scene layout over time: lane lines, object bounding boxes, and traffic-light states.
+
+Text captions are provided as 11 separate JSON files per scene, one per camera view.
+
+## Dataset Quantification
+
+Record count: 91 multiview sequences (11 camera views per sequence).
+
+Size bin: `n<1K`, where each record is one sequence.
+
+Video length: 351–657 frames (11.7–21.9 seconds) at 30fps.
+
+Resolution:
+- Seven standard cameras: 1924 × 1084 for 53 sequences, or 1920 × 1080 for 38 sequences.
+- Four fisheye cameras: 1720 × 1080 for 53 sequences, or 1350 × 1080 for 38 sequences.
+
+Total storage size: approximately 2.59 GB (decimal).
+
+## Limitations
+
+- **Small sample.** 91 scenes cover a limited range of road types, regions, traffic densities, and weather. Results on this evaluation subset may not generalize to other driving scenarios.
+- **One conditioning format.** Results apply to WSM conditioning and may not transfer to other conditioning formats, such as depth, segmentation, or edge maps.
+- **Annotation error.** Lane lines and bounding boxes come from automated models with human QA. Some missed or misplaced objects may remain.
+- **Layout only.** WSM encodes scene geometry and traffic-light state. It does not encode appearance, lighting, weather, or road-surface detail.
+
+## Reference(s)
+
+- [WSM representation example](https://github.com/NVIDIA/cosmos/blob/main/assets/demos/transfer_worldscenario.gif).
+  The top half shows WSM controls; the bottom half shows Cosmos-generated video. The released dataset contains WSM controls and text prompts, without generated video.
+
+## Ethical Considerations
+
+NVIDIA believes Trustworthy AI is a shared responsibility and we have established policies and practices to enable development for a wide array of AI applications. Developers should work with their internal developer teams to ensure this dataset meets requirements for the relevant industry and use case and addresses unforeseen product misuse.
+
+**Privacy:** The dataset contains no camera images, faces, license plates, or legible text. Road agents appear only as bounding boxes.
+
+Please report quality, risk, security vulnerabilities or NVIDIA AI Concerns [here](https://www.nvidia.com/en-us/support/submit-security-vulnerability/).
+
+## Files
+
+```text
+wsm/scene-001/camera_front_wide_120fov.mp4
+captions/scene-001/camera_front_wide_120fov.json
+...
+manifest.jsonl
+metadata.jsonl
+checksums.json
+```
+
+- `manifest.jsonl`: one record per scene, grouping all 11 views by `camera_key`,
+  with repository-relative `wsm_path` and `caption_path` values.
+- `metadata.jsonl`: one record per camera view, linking its control video to the
+  complete caption text and measured video properties for the dataset viewer.
+- `checksums.json`: SHA-256 and byte size for every other release payload file.
+- `scene-001` through `scene-091` are release-local identifiers.
+
+The viewer has **1,001 rows**, not 1,001 independent scenes. Group rows by
+`sample_id` to recover the 91 multiview scenes. The `test` split contains the
+entire evaluation collection; no training split is supplied.
+
+## Browse the dataset
+
+Use the built-in **Dataset Viewer / Data Studio** on this dataset page, with
+configuration `default` and split `test`. Each row contains one playable WSM
+video and its matching timestamped caption.
+
+- Search for a scene ID such as `scene-001` to find its 11 camera views.
+- Use `camera_key` to identify the view, for example
+  `camera_front_wide_120fov`.
+- Read `caption` for the complete prompt. `caption_path` points to the matching
+  structured JSON in the **Files** tab.
+- Check `width`, `height`, `fps`, `num_frames`, and `duration_seconds` for the
+  native control-video properties. `caption_start_frame` and
+  `caption_end_frame` describe the caption window, not the full video duration.
+- Download a complete scene using the command in the **Download** section below.
+
+The built-in viewer displays camera videos individually; it is not a
+synchronized surround player. It shows only WSM controls and captions, not RGB
+recordings or LiDAR. Hosted browsing requires the data to be on the dataset's
+default branch and processed by Hugging Face; files proposed only in a pull
+request are not a verified live viewer. Restricted repositories require access.
+
+## Camera names
+
+Each scene contains these camera keys. Match files by camera key, not directory
+listing order.
+
+```text
+camera_front_wide_120fov
+camera_cross_left_120fov
+camera_cross_right_120fov
+camera_rear_left_70fov
+camera_rear_right_70fov
+camera_rear_tele_30fov
+camera_front_tele_30fov
+camera_front_fisheye_200fov
+camera_left_fisheye_200fov
+camera_rear_fisheye_200fov
+camera_right_fisheye_200fov
+```
+
+## Captions and timing
+
+Each JSON preserves the structured caption format:
+
+```json
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-2.0s]: ...",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}
+```
+
+This is a schema illustration, not an additional sample. Use each file's actual
+chunk keys, frame bounds and timestamped text.
+
+The captions are the timestamped Tier1 version, with a privacy cleanup of
+identifying text. They are **not a new environmental prompt rewrite**. The
+cleanup removes transcribed identifying values, including license-plate values,
+while retaining generic descriptions such as a vehicle having a visible plate.
+Timestamp strings, frame bounds and other JSON fields are preserved.
+
+Control videos retain their original bytes, frame rate, dimensions and duration.
+**A control video may be longer than its caption window.** Use the caption's
+frame bounds when selecting a generation interval; do not assume that a caption
+describes the entire MP4. `metadata.jsonl` records measured control dimensions,
+frame count, frame rate and duration. The upload does not crop, retime, resize or
+re-encode the controls.
+
+Captions are machine-generated descriptions and may contain errors. Privacy
+cleanup is not a correction of all scene descriptions or an independent
+verification of physical camera calibration.
+
+## Download
+
+Download the files directly; there is no ZIP extraction step:
+
+```bash
+hf download nvidia/Cosmos3-Driving-Simulation-Evaluation \
+  --repo-type dataset --local-dir driving-simulation-evaluation
+```
+
+For one scene, download its two folders plus the manifests:
+
+```bash
+hf download nvidia/Cosmos3-Driving-Simulation-Evaluation \
+  --repo-type dataset --local-dir driving-simulation-evaluation \
+  --include 'wsm/scene-001/*' 'captions/scene-001/*' \
+            'manifest.jsonl' 'metadata.jsonl' 'README.md' 'checksums.json'
+```
+
+Authentication is required while repository access is restricted. Downloaded
+metadata uses relative paths and contains no internal storage locations.

captions/scene-001/camera_cross_left_120fov.json

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+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0s-5.4s]: A first-person forward-facing view from a moving vehicle travels along a smooth dark asphalt multi-lane highway, with the camera translating steadily forward at eye level in wide landscape framing. The foreground right lane is marked by a solid orange edge line and white dashed lane dividers. A continuous segmented light gray concrete Jersey barrier runs parallel to the road across the midground, separating opposing traffic lanes; small white vertical marker posts are spaced at regular intervals along the near side of this barrier, passing sequentially through the frame as the camera moves. Behind the concrete barrier stands a tall, uniform dark brown sound wall spanning the full width of the background. Beyond the sound wall, rugged mountains rise, their upper peaks dusted with bright white snow while lower slopes are covered in dense dark green forest. The sky above is filled with layered gray and white clouds, with bright sun glare creating washed-out highlights in the upper right portion of the frame. Opposing-direction vehicles travel behind the concrete barrier, moving from frame right toward frame left: first a dark passenger car passes out of frame left, followed by a white box van that also exits frame left. Small red roadside markers are visible at intervals along the far side of the concrete barrier.\n[5.4s-7.6s]: A glossy black compact BMW i3 electric hatchback enters the frame from the left, traveling forward in the same direction as the camera vehicle in the adjacent left lane. The car has silver multi-spoke alloy wheels, dark tinted windows, and a visible rear license plate. It moves past the camera position, progressing toward frame right and pulling ahead into the distance, remaining in its lane as it travels down the highway. The concrete barrier, brown sound wall, snow-capped mountains, and cloudy sunlit sky remain unchanged in the background.\n[7.6s-10.8s]: A large white cab-over box truck with a dark blue fabric cargo cover enters the frame from the left, traveling forward in the same direction as the camera vehicle in the lane immediately adjacent to the camera's lane. The truck has black plastic wheel trim, black side mirrors, illuminated amber marker lights along its lower side sill, and \"DPR\" text printed on its lower rear side panel; its driver is faintly visible through the driver's side window, though facial features and clothing details are indistinct. The truck moves past the camera position, progressing toward frame right and pulling ahead, occupying more of the left half of the frame as it travels forward. The black BMW i3 remains visible further ahead in the next lane over, continuing down the highway. The concrete barrier, brown sound wall, snow-dusted forested mountains, and partly cloudy sky with upper-right sun glare stay consistent in the background for the remainder of the clip.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-001/camera_cross_right_120fov.json

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+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-5.0s]: The view is a first-person perspective from a moving vehicle traveling forward along a smooth dark asphalt road, with a solid orange edge line running along the left portion of the visible pavement. A continuous silver metal W-beam guardrail supported by evenly spaced vertical posts runs parallel to the road in the midground; between the guardrail and a narrow strip of green grass at its base lies a gravel shoulder, and behind the guardrail sits a flat light gray gravel work area bordered by a low wire fence strung between thin white posts. Clusters of small, leafless brown shrubs grow in patches along the base of the guardrail, interspersed with small areas of green grass. In the background, a large steep mountain rises across the right and central frame, its slopes covered in dense dark green forest with irregular patches of exposed gray rock on steeper sections. On the far left, distant hazy blue-gray mountains are visible beneath an overcast sky filled with soft gray-white clouds, and a tall lattice-style metal electricity transmission pylon stands on the left side of the landscape, with multiple power lines stretching horizontally across the upper portion of the view. Lighting is diffused overcast daylight, creating soft, indistinct shadows and a muted natural color palette. As the vehicle moves forward, the shrubs and fence posts behind the guardrail shift steadily toward the right side of the frame.\n[5.0s-8.0s]: The solid orange edge line on the road changes to a solid white edge line as the vehicle continues forward. The tall lattice transmission pylon grows progressively larger in the left midground as the vehicle approaches it. A circular traffic sign mounted on a thin metal pole comes into view behind the guardrail: the sign has a white face with a single thick black horizontal bar across its center, and it shifts from the left midground toward the right side of the frame before passing out of view. The gravel work area, wire fence, sparse leafless shrubs, and forested rocky mountain remain consistent in the background, with the overcast sky and distant left mountains still visible.\n[8.0s-10.6s]: The vehicle passes the tall transmission pylon, which shifts from the left midground across the center of the frame to exit the right edge of the view. Behind the guardrail and wire fence, parked construction equipment becomes clearly visible on the gravel work site: a yellow wheeled loader, a red tractor pulling a gray dump trailer, and additional heavy machinery including a yellow excavator positioned further left near the treeline at the base of the mountain. The foreground road remains dark smooth asphalt with a solid white edge line, the guardrail continues uninterrupted along the roadside, and the forested rocky mountain fills the entire background under the persistent overcast cloudy sky. The camera maintains steady forward motion throughout, with no abrupt framing or viewpoint changes, capturing the passing roadside landscape in a photorealistic, unfiltered style.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-001/camera_front_fisheye_200fov.json

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+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-5.5s]: The view is a first-person forward-facing perspective from a moving vehicle, captured with a fisheye lens that creates dark circular vignetting around the frame edges and curved distortion of straight lines. The vehicle travels along a smooth gray asphalt highway lane marked by solid orange lines on both its left and right edges. A concrete barrier topped with a dark red horizontal strip runs along the left side of the road, separating the travel lane from adjacent lanes, while a silver metal W-beam guardrail runs along the right edge, bordering a narrow strip of grass and low vegetation at the base of a steep hillside covered in sparse brownish-green trees and shrubs. In the background, rugged mountain ranges rise on both sides; the left mountain range has distinct patches of snow on its upper peaks, and a tall lattice-style power transmission tower stands in the mid-distance ahead, slightly right of center. The sky is bright with scattered light clouds, and strong sun glare washes out the central area directly ahead, creating high contrast between the overexposed sky and darker landscape elements. Small distant vehicles are visible far ahead in the same direction of travel, and no nearby vehicles appear in the immediate travel lane during this segment as the camera moves steadily forward.\n[5.5s-8.0s]: The solid orange lane markings transition to white dashed lane dividers between travel lanes and a solid white line along the right edge of the lane. A black compact hatchback car enters the frame from the left, traveling forward in the adjacent left lane at a higher speed than the camera vehicle, overtaking it. The car moves across the left portion of the frame, progressing from a position alongside the camera vehicle to a position ahead in the left lane. As the vehicle continues forward, two circular regulatory road signs mounted on posts become visible on the right shoulder next to the guardrail, and the tall power transmission tower grows larger in the midground. The surrounding mountain landscape, guardrail, concrete barrier, and bright hazy sky remain consistent, with persistent sun glare in the central forward view.\n[8.0s-10.5s]: A white box truck with a dark fabric-covered cargo bed enters the frame from the left, also traveling forward in the adjacent left lane at a higher speed than the camera vehicle, overtaking it behind the black hatchback. The truck moves across the left portion of the frame, progressing from a position alongside the camera vehicle to a position ahead in the left lane, following the black hatchback which continues to pull further ahead down the road. The tall lattice power transmission tower draws closer, positioned just beyond the right guardrail, and small roadside structures plus additional distant vehicles become visible further ahead near the base of the right hillside. The camera maintains steady forward motion, with the fisheye vignette, asphalt road surface, concrete left barrier, metal right guardrail, snow-dusted left mountains, vegetated right hillside, and bright partly cloudy sky with central sun glare remaining consistent through the end of the clip.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-001/camera_front_tele_30fov.json

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+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-4.0s]: The view is a first-person forward-facing perspective from a vehicle traveling along a straight, multi-lane asphalt highway in a mountain valley. Two solid red lines mark the left and right edges of the current travel lane; white dashed lane markings separate adjacent same-direction lanes to the left, and a continuous concrete barrier runs along the far left edge separating opposing traffic. A metal W-beam guardrail supported by dark vertical posts runs along the right road edge. In the background, tall rugged mountains with snow-dusted upper peaks rise under an overcast gray sky, with lattice-style high-voltage power transmission towers spaced along both sides of the corridor. Behind the right guardrail, yellow construction machinery including excavators and work trucks are parked behind a temporary fence, alongside bare deciduous trees and small patches of green grass. Opposing traffic travels behind the left concrete barrier, including a white van that moves toward the foreground as the camera advances. Distant vehicles are visible far ahead on the straight roadway, and circular regulatory signs marked with a single black diagonal stripe (indicating the end of a traffic restriction) are positioned on both sides of the road further ahead. Lighting is flat and diffused by cloud cover, with muted color tones and light haze reducing distant visibility.\n[4.0s-9.0s]: As the vehicle continues moving forward, the solid red lane edge lines transition to standard white lane markings: a solid white line marks the right edge of the travel lane, and white dashed lines separate the left same-direction lanes. The circular end-of-restriction signs grow larger as they approach, with one sign mounted on a post beside the left concrete barrier and another beside the right guardrail before passing out of the frame. Additional opposing passenger cars become visible behind the left concrete barrier as the vehicle progresses. The snow-capped mountain range remains centered in the far background, and the construction site on the right stays in view, with a yellow excavator clearly visible behind the guardrail fencing. Light atmospheric haze persists, keeping distant details soft and low-contrast.\n[9.0s-10.5s]: A dark-colored compact hatchback enters the frame from the left, traveling forward in the adjacent left same-direction lane at a higher speed than the camera vehicle, pulling alongside then slightly ahead of the viewpoint. The car has silver alloy wheels, dark tinted side windows, and a rear license plate with legible text. The highway continues straight ahead into the hazy distance, with the concrete median barrier remaining on the left and metal guardrail on the right, while the mountain backdrop and roadside infrastructure stay consistent as forward travel continues.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-001/camera_front_wide_120fov.json

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+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-4.5s]: The view is a first-person forward-facing perspective from inside a moving vehicle, with the light-colored hood of a Mercedes-Benz (bearing the brand's three-pointed star emblem at its center) visible in the immediate foreground. The vehicle travels straight along a smooth paved multi-lane highway marked with double solid orange lines down the center of the travel lane and white edge lines. A concrete Jersey barrier runs along the left side of the road, separating opposing traffic; multiple passenger cars are visible traveling in the opposite direction behind this barrier, including a dark car with a roof storage box near the start of the segment. A metal W-beam guardrail runs along the right side of the road, bordering a wide river lined with bare, leafless shrubs and trees. Steep mountains rise on both sides of the valley: the left mountain range has patches of snow on its upper peaks, while the closer right mountain slope is covered in dense dark forest. Tall lattice-style electricity pylons line the route ahead, receding into the distance. The sky is partly cloudy, with bright sunlight breaking through cloud cover to create hazy glare across the upper portion of the frame. As the vehicle moves forward, a white van traveling in the opposite direction comes into clear view behind the left concrete barrier and passes out of the left edge of the frame.\n[4.5s-6.5s]: The double solid orange center lines end, transitioning to standard dashed white lane markings that indicate an open passing zone. Circular road signs with black diagonal stripes marking the end of a regulatory restriction become visible on both sides of the highway ahead. The large electricity pylon on the right grows progressively larger as the vehicle approaches it, and the river, forested right mountain slope, snow-dusted left mountains, and partly cloudy sunlit sky remain consistent in the background. The vehicle continues traveling straight forward at steady speed, with no other vehicles present in the same-direction travel lanes during this interval.\n[6.5s-10.5s]: A black compact hatchback enters the frame from the left, traveling forward in the adjacent left same-direction lane, gradually pulling ahead of the camera vehicle. Shortly after, a large white heavy truck with a high-roof cab and dark enclosed cargo trailer enters the frame from the far left, also traveling forward in the leftmost same-direction lane, moving past the camera vehicle alongside the black hatchback. The tall lattice electricity pylon on the right passes very close to the roadside, revealing a fenced construction area behind the right guardrail that holds yellow heavy construction machinery and stacked building materials. The concrete barrier on the left, distant snow-capped peaks, forested right mountain, river, and partly cloudy sky with sun glare remain visible as all three vehicles continue straight along the highway.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-001/camera_left_fisheye_200fov.json

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+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-4.8s]: The view is a first-person perspective from a moving vehicle, captured with a fisheye lens that creates curved distortion of road lines and the horizon, with dark circular vignetting around the frame edges; portions of the white host vehicle's body are visible at the bottom left and bottom right corners. The setting is a multi-lane asphalt highway under bright daylight, with strong sun glare in the upper right sky, scattered white clouds, and rugged mountains with snow-capped peaks rising in the distant background. A continuous concrete median barrier topped with a reddish-brown noise wall runs across the midground, separating opposing traffic lanes. The road surface is smooth gray asphalt, marked with a solid orange line along the left edge of the host vehicle's lane, white dashed lane dividers between same-direction lanes, and a metal guardrail along the far right edge of the roadway. In the opposing left lanes, a black compact SUV approaches from the distance, growing steadily larger as it nears, with a white box truck following behind it further back; additional passenger cars travel in the same direction as the host vehicle on the opposite side of the median, moving away from the viewpoint.\n[4.8s-7.2s]: The black compact SUV reaches the foreground, traveling across the frame from left to right as it passes the host vehicle, revealing its silver alloy wheels, dark-tinted windows, and BMW badging on its front grille. The white box truck behind it continues approaching, becoming more prominent as the SUV moves past. The solid orange lane line in the immediate foreground transitions to white dashed lane markings as the host vehicle progresses forward, while the mountain range, noise barrier, and bright sky remain unchanged in the background.\n[7.2s-10.5s]: The black SUV continues traveling forward down the right-hand same-direction lane, receding into the distance ahead of the host vehicle. The white box truck, which has a white cab and dark blue fabric-covered cargo bed, moves into the foreground, passing across the frame from left to right directly alongside the host vehicle before pulling slightly ahead. As the truck passes, yellow roadside signs including a red circular regulatory sign become visible on the left shoulder adjacent to the median barrier. Fisheye distortion remains consistent throughout, with bright sunlight casting sharp shadows on the asphalt road surface, and the snow-dusted mountains and partly cloudy sky staying visible in the background.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-001/camera_rear_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-5.6s]: The view is a first-person forward-facing perspective from inside a moving vehicle, framed by the curved white interior edge of the windshield opening with dark vignetting around the circular field of view; partial black stylized text is visible on the lower left interior frame. The setting is a straight multi-lane asphalt highway in bright daytime, under a partly cloudy sky with patches of blue and scattered white clouds. Steep mountains covered in mixed green vegetation and exposed rock rise on both sides, with snow-capped peaks visible on the distant right mountain range. A metal guardrail runs along the left road edge, and a concrete barrier topped with red-and-black striped safety fencing runs along the right road edge. Bright orange temporary lane lines mark two adjacent travel lanes at the start of the segment. Multiple vehicles travel ahead: a dark passenger car stays in the left lane far ahead, while a black compact SUV travels in the right lane approaching the viewpoint. As the host vehicle moves forward, the black SUV draws alongside the right side of the frame, revealing its silver alloy wheels, dark tinted windows, and front grille, before it exits the frame to the right.\n[5.6s-8.7s]: After the black SUV exits the frame, the temporary orange lane markings are replaced by standard white dashed lane dividers between travel lanes. A white cab-over box truck with a dark blue fabric cargo cover approaches in the right lane, growing larger as it nears the viewpoint. The truck passes alongside the right side of the frame, showing its white cab, dark blue enclosed cargo bed, and multiple axles, before exiting the frame to the right. The dark passenger car remains visible traveling ahead in the left lane throughout this segment, with smaller distant vehicles visible further down the straight highway.\n[8.7s-10.6s]: With the box truck no longer in view, the highway stretches straight ahead. Roadside infrastructure becomes visible: a tall lattice-style metal electricity pylon stands on the left hillside above the guardrail, and yellow rectangular road signs plus circular regulatory signs are positioned on both sides of the road near the barriers. The host vehicle continues moving forward along the highway, with the forested and rocky mountain slopes remaining on both sides, the partly cloudy sky overhead, and clear visibility across the scene.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-001/camera_rear_left_70fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-5.6s]: The view is a first-person eye-level perspective from a vehicle traveling forward on a multi-lane asphalt highway under overcast, gray cloudy skies. Steep mountains with snow-capped upper peaks and mixed forested lower slopes rise in the background; tall metal electricity pylons stand along the mountain base, a concrete highway overpass spans the road in the far distance, and a long dark brown noise barrier wall runs parallel to the road behind a continuous line of light gray concrete traffic barriers that separate opposing traffic directions. Small orange construction markers are spaced at regular intervals along the top edge of the concrete barriers, and an orange temporary construction sign stands near the barriers further down the road. The road surface has a solid bright orange lane marker running longitudinally down the left portion of the visible travel lanes, plus white painted lane lines. The partial side of a light-colored passenger car is cropped at the far left edge of the frame for the full duration of the clip. In the midground, a black BMW i3 compact electric car with blue-accented kidney grilles, silver alloy wheels, and a visible license plate travels toward the foreground in the lane immediately right of the orange line, growing progressively larger as it approaches. Further back in the same lane, a white Renault cab-over box truck with a dark fabric cargo cover follows the BMW, and additional vehicles including a black sedan and a red car are visible further down the road. A driver wearing a light beige jacket is visible through the BMW's driver-side window as the car draws near, before the BMW exits the frame to the right.\n[5.6s-9.2s]: After the BMW exits the frame, the white Renault box truck continues approaching the foreground. The truck has a white cab, gray lower bumper and trim, illuminated headlights, a Renault diamond logo on its front grille, and a visible license plate. As the truck passes close to the camera position, its dark fabric-covered cargo bed, side marker lights, rear underride guard, and dual rear wheels become visible, before the entire truck exits the frame to the right. As the truck moves past, yellow road signs mounted on posts next to the concrete barrier come into clear view: one sign displays two upward-pointing arrows (one straight, one curving right) above the text \"100m\", adjacent to a circular red-and-white regulatory sign, with a smaller yellow merge warning sign positioned further along the barrier. The mountain landscape, noise barrier, overcast sky, and distant traffic remain visible in the background throughout this segment.\n[9.2s-10.6s]: With the box truck fully exited from the frame, the immediate section of travel lane ahead is clear. The yellow road signs, concrete traffic barriers, dark noise barrier, forested snow-capped mountains, and overcast sky remain in view. Distant traffic including a black SUV, black sedan, and other smaller vehicles is visible further down the highway, and the camera continues moving forward along the road. Lighting remains flat and diffused from the overcast conditions, with no strong shadows cast on the road surface.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-001/camera_rear_right_70fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-5.0s]: The view is a first-person eye-level perspective from a moving vehicle traveling forward along a smooth dark asphalt road, with the partial side of a light-colored vehicle visible at the far right edge of the frame for the full duration. A continuous silver W-beam metal guardrail supported by evenly spaced vertical posts runs parallel to the road on the left, separating the pavement from a narrow strip of gravel and patchy green grass. Immediately beyond the guardrail is a chain-link fence mounted on white posts, which borders a wide, calm gray-green river with exposed rocky gravel bars along its near bank. Across the river, a steep, rugged mountain slope rises, covered in a mix of dense dark green coniferous forest and large patches of bare brown leafless deciduous trees, with sections of exposed gray rock face visible higher up the slope. In the right travel lane ahead, a black sedan faces directly toward the viewer with its headlights illuminated, positioned close to the camera; further back in the same lane, a white box truck and several smaller passenger cars are visible. A tall lattice-style steel electricity pylon stands in the distance on the right side of the road, adjacent to a concrete overpass bridge that crosses the road in the far background. The sky is fully overcast with heavy gray clouds, creating flat, diffused lighting with no harsh shadows, and the scene has a muted cool color palette dominated by grays, dark greens, and browns. As the vehicle moves forward, roadside elements including fence posts, guardrail supports, and small bushes between the fence and guardrail appear to drift backward relative to the frame.\n[5.0s-8.0s]: The vehicle continues steady forward motion. The bright orange solid line marking the left edge of the travel lane transitions to a standard white solid lane line as the car progresses. Small leafless shrubs and low bushes between the guardrail and chain-link fence continue to pass through the foreground, and larger light gray boulders become visible scattered across the gravel riverbank behind the fence. The black sedan remains positioned ahead in the right lane, maintaining its orientation facing the viewer with headlights still on, while the distant traffic including the white truck stays visible further down the straight road. The forested mountain slope, overcast gray sky, distant electricity pylon, and concrete overpass remain unchanged in the background.\n[8.0s-10.5s]: As forward travel continues, the round, plain gray reverse side of a circular road sign mounted on a single metal post comes into view beside the guardrail, then passes out of the left edge of the frame. A second tall lattice-style steel electricity pylon enters the frame from the left, growing progressively larger as the vehicle approaches it, with its metal cross-bracing clearly visible. The terrain immediately behind the guardrail shifts to show more extensive areas of bright green grass interspersed with gravel, while the river, chain-link fence, and steep forested mountain slope remain consistent in the midground and background. The black sedan stays ahead in the right lane facing the viewer with illuminated headlights, and the line of distant vehicles remains visible approaching the concrete overpass under the persistent overcast, diffused lighting.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-001/camera_rear_tele_30fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-3.0s]: A forward-facing, eye-level view captures travel along a multi-lane asphalt highway under overcast, hazy conditions, with distant snow-dusted mountain peaks visible beneath heavy gray clouds. Steep mountainsides covered in mixed evergreen and bare deciduous trees rise on both sides of the road; tall lattice-style electricity pylons stand on the left hillside, and a concrete multi-span overpass crosses the highway in the midground. The left edge of the roadway is lined with a metal W-beam guardrail adjacent to a grassy verge and wire fence, while temporary construction barriers (orange plastic bollards, concrete jersey barriers) line the right side of the active travel lanes, separating them from a closed work zone where workers in orange high-visibility vests are visible further ahead. An orange rectangular construction sign mounted on the right barrier displays legible text: \"Hochalpenstraße 2022\", \"Safiental Brücke Ersatz\", \"Neubau Menzenschwand -\", \"A13 Klettgau\". Bright orange painted temporary lane lines divide the two open travel lanes. In the left lane, a black Suzuki hatchback with illuminated headlights travels toward the foreground, its front license plate; a driver is visible behind the wheel, and a red passenger car follows directly behind it. In the right lane, a black BMW i3 with illuminated LED daytime running lights travels toward the foreground, its front license plate. Further back in the right lane, a white Renault box truck with a dark canvas cargo cover travels toward the foreground, followed by a line of additional passenger cars and a distant white truck approaching the overpass.\n[3.0s-6.5s]: The camera continues moving steadily forward along the highway. The black BMW i3 exits the frame at the right edge. The white Renault box truck advances closer to the foreground, revealing its front license plate as it passes alongside the black Suzuki in the left lane, before exiting the frame at the right edge. The bright orange temporary lane markings gradually transition to standard white dashed lane dividers as the vehicles progress past the narrowed construction section. The black Suzuki remains centered in the left lane, maintaining consistent speed relative to the camera, with the red car still following behind it. The line of traffic in the right lane continues advancing toward the foreground, led by a black Mercedes-Benz sedan that grows more prominent as it approaches. The overpass, mountain slopes, electricity pylons, and right-side construction barriers remain visible in the background, with workers in orange vests still present near the barriers ahead.\n[6.5s-10.5s]: The camera maintains steady forward motion. The black Mercedes-Benz sedan in the right lane draws level with the black Suzuki in the left lane, its front license plate partially legible as it travels toward the foreground. Additional road signs come into clear view on the right roadside: a circular regulatory sign with a red border and white face, and a yellow rectangular warning sign marked \"100m\" with black graphics indicating an upcoming lane merge. On the left roadside, the plain reverse side of a circular road sign becomes visible next to the guardrail. The red passenger car following the black Suzuki moves forward, becoming partially visible between the Suzuki and the distant traffic queue. A white van is visible parked in the closed work zone beyond the right-side concrete barriers. Lighting remains flat and diffused from the overcast sky, with muted color tones and soft haze reducing clarity of the most distant mountain peaks. All visible vehicles maintain consistent forward travel in their respective lanes through the end of the clip.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-001/camera_right_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-5.0s]: The view is a first-person forward-facing perspective from a moving vehicle, captured with a fisheye lens that creates strong barrel distortion and dark circular vignetting around the frame edges. The lower left and right of the frame show portions of the host vehicle's light-colored body panels; a sticker on the lower right panel displays a white stylized \"D\" logo on a black background, with partial orange and brown detailing adjacent to it. The road ahead is smooth dark gray asphalt, marked by a curved lane line composed of a thick bright orange stripe bordered above and below by thin white lines. A continuous silver metal guardrail runs parallel to the road across the midground, separating the travel lane from the opposite carriageway. Behind the guardrail, a large rounded mountain dominates the background, its slopes covered in a mix of dark green coniferous forest and exposed gray rock faces. The sky above is partly cloudy, with bright white cloud cover interspersed with patches of blue. A small group of passenger cars travels ahead in the same lane, visible at the far right edge of the frame. As the vehicle moves steadily forward, the orange and white lane marking shifts gradually toward the bottom of the frame, and the shadow of the host vehicle becomes increasingly visible on the right portion of the road surface.\n[5.0s-7.5s]: The orange component of the curved lane marking disappears entirely, leaving only a solid curved white lane line on the asphalt. The host vehicle continues moving forward along the straight highway. The silver guardrail remains parallel to the road in the midground, and the forested rocky mountain stays centered in the background under the partly cloudy sky. The group of cars ahead remains visible in the distance on the right side of the travel lane. A tall lattice-style metal electricity pylon comes into clear view on the left side of the frame, positioned behind the guardrail, growing larger as the vehicle approaches it.\n[7.5s-10.5s]: The host vehicle continues traveling forward, passing the tall electricity pylon which shifts from the left midground toward the center-right of the frame before exiting view. Circular road signs mounted on posts appear alongside the guardrail: first a sign with a white face and single black diagonal stripe, followed by additional round regulatory signs further along the roadside. Patches of green grass are visible between the road edge and the guardrail, replacing the earlier bare ground immediately adjacent to the barrier. Small low buildings and scattered leafless trees become visible at the base of the mountain on the left side, behind the guardrail. The solid white curved lane marking remains present on the asphalt, the shadow of the host vehicle stays cast on the right side of the road, and the group of cars ahead continues traveling in the same lane in the far distance. Fisheye distortion and dark edge vignetting persist throughout, with bright natural daylight illuminating the scene and soft shadows cast by the vehicle and roadside structures.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-002/camera_cross_left_120fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-2.1s]: The view is a first-person forward-facing perspective from a vehicle traveling on a dark asphalt multi-lane highway under uniformly overcast, gray, flat lighting with no harsh shadows. A tall gray concrete median barrier runs along the left side of the travel lanes, separating opposing traffic; a white ribbed rumble strip lines the lane edge adjacent to the barrier, and a solid white line marks the right edge of the current lane. In the right lane ahead, a red semi-truck pulling a red shipping container marked with a white X logo travels forward. Behind the median barrier, a dark blue passenger car moves in the opposite direction, partially obscured by the barrier. The background includes a large elevated metal truss pedestrian overpass spanning across all road lanes, two construction cranes visible on the far left horizon, green leafy trees, and low distant buildings. A silver Toyota RAV4 hybrid SUV enters the frame from the left, overtakes the camera vehicle, and moves into the right lane ahead, displaying its rear license plate as it pulls forward.\n[2.1s-5.3s]: The camera vehicle continues moving forward, passing underneath the metal truss overpass. Opposing traffic behind the median includes a large blue articulated lorry with printed graphics of people's faces and partial text \"HOLLANDERS Transport\" on its trailer, followed by a bright red compact hatchback and a silver station wagon traveling in the opposite direction. The red shipping container truck remains visible further ahead in the right lane, while the silver SUV stays positioned ahead in the same lane. As the vehicle progresses, the pedestrian overpass recedes behind, revealing more green deciduous trees, tall gray streetlight poles, and additional construction cranes in the distance. White painted directional arrows appear on the asphalt surface of the travel lane.\n[5.3s-7.4s]: A white commercial van decorated with wide horizontal orange and blue stripes, marked with \"NCC\" text on its side panels, enters from the left, overtakes the camera vehicle, and moves into the right lane ahead, displaying its rear license plate. Opposing traffic behind the median now features a red-cab semi-truck pulling a white box trailer printed with black \"frs Flanders Road Services\" text and a stylized frs logo. Blue overhead highway signs come into view on the right side of the road, with legible text including \"E155\", \"ÖCKER\", \"TORSLANDA\", and \"Hamnar\". The NCC-branded van travels further ahead in the right lane.\n[7.4s-10.6s]: The concrete median barrier transitions to a silver metal W-beam guardrail as the road approaches an interchange area. A second white commercial van, marked with blue \"TUVE BYGG\" logos on its side panels and fitted with a black roof rack, enters from the left, overtakes the camera vehicle, and moves into the right lane ahead, displaying its rear license plate. Additional opposing traffic passes behind the guardrail, including a silver Mercedes-Benz sedan, a white compact hatchback, and multiple other passenger cars. Green-illuminated traffic lights are visible ahead on the right side of the road, alongside more streetlight poles, green roadside signage, and distant mid-rise urban buildings. The overcast gray sky and muted, cool color palette persist across the scene as the camera vehicle continues traveling forward in its lane.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-002/camera_cross_right_120fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-1.0s]: The view is a first-person perspective from a moving vehicle traveling along an asphalt road, with a white zigzag chevron road marking running along the left edge of the pavement in the immediate foreground. A curved grey metal W-beam guardrail supported by vertical posts lines the road edge, separating it from a sloped grassy verge dotted with small yellow flowers. On the right side of the frame, a weathered light grey corrugated metal industrial building stands, marked with prominent vertical brown rust streaks down its wall, a small barred access gate set into its facade, and black graffiti on its far right corner. To the left, an elevated dark green steel pedestrian overpass extends diagonally away from the viewer, supported by thick angled steel beams anchored to concrete footings. Behind the grassy verge runs a tall continuous grey corrugated metal construction fence covered in multi-colored stylized bubble-letter graffiti tags; blue articulated construction lift machines are visible above the fence line, and the sky is uniformly overcast and dull grey. As the vehicle moves forward, the rust-streaked industrial building exits the frame to the right, revealing more of the graffiti-covered construction fence and the full span of the overpass support structure.\n[1.0s-8.5s]: The vehicle continues forward, passing sequentially under the elevated pedestrian overpass. The overpass's dark ribbed underside, crisscrossing steel truss supports, and metal mesh safety railing along its top edge become fully visible as the viewpoint moves beneath it. Each overpass support rests on a square concrete footing, one of which bears bright green painted text reading \"CH1\". The construction fence remains parallel to the road behind the grassy verge, displaying successive graffiti tags in black, purple, red, white, and yellow, including large outlined bubble letter designs. Blue construction lifts remain visible above the fence, positioned over a rocky excavated hillside in the distant background. The grassy verge between the guardrail and fence has patches of exposed dirt and sparse low vegetation. As the vehicle progresses further under the bridge, the solid grey concrete abutment anchoring the overpass comes into view ahead, topped with a tall silver metal security fence.\n[8.5s-10.5s]: The vehicle exits the underpass, and the concrete overpass abutment fills the midground, lined with the tall silver security fence along its top edge. Several vertical blue-and-white flags are mounted at intervals along the fence, and a tall lattice-style metal sign gantry stands adjacent to the abutment, holding multiple road signs: a green directional sign with a red diagonal stripe, a yellow diamond-shaped warning sign, and a partially visible blue overhead sign. Further ahead on the left, a tall pole-mounted gas station sign displays legible text \"tanka\" alongside a circular brand logo, with smaller unreadable signage attached below it. Beyond the security fence, additional construction equipment including a green telescopic lift is visible, and distant traffic lights and passenger cars can be seen on the continuing road ahead. The overcast grey sky persists, lighting is flat and diffused with no strong shadows, and the muted color palette of greys, greens, and dark tones dominates the scene, with slight motion blur consistent with steady forward travel.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-002/camera_front_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-2.6s]: The view is a first-person forward-facing dashcam perspective with strong fisheye lens distortion and dark circular vignetting around the frame edges, capturing travel along a wet multi-lane asphalt highway under overcast, gray cloudy skies. A teal box truck travels directly ahead in the same lane as the camera vehicle, while a red shipping container mounted on a semi-trailer occupies the adjacent left lane further ahead. A concrete barrier separates opposing traffic to the far left, and a metal W-beam guardrail runs along the right road edge next to a narrow grass strip and a tall gray concrete noise wall covered in white and black spray-painted graffiti tags. An arched steel truss pedestrian overpass spans all lanes of the highway ahead. As the camera vehicle moves steadily forward toward the overpass, a silver SUV enters from the left adjacent lane, accelerates past the camera position, and continues ahead into the distance; a blue heavy goods vehicle is visible behind the concrete median on the opposite side of the highway during this pass.\n[2.6s-5.8s]: The camera vehicle passes underneath the steel truss pedestrian overpass, after which an elevated section of the same pedestrian walkway structure runs parallel to the highway above the right-side noise wall. The teal box truck remains positioned directly ahead in the center travel lane, and the red container semi-truck stays visible further ahead in the left lane. White dashed lines separate the travel lanes, a solid white line marks the right road edge, and large painted white directional arrows appear on the asphalt surface indicating straight-ahead and rightward lane options. Tall green deciduous trees are visible beyond the left concrete median, and tall streetlight poles come into view along the left roadside as the vehicle progresses forward.\n[5.8s-8.4s]: A white ambulance with bold red horizontal stripes and blue lower side panels enters from the left adjacent lane, accelerates past the camera vehicle, and moves ahead into the left lane. Immediately following the ambulance, a white semi-truck pulling a long white trailer marked with a dark \"fci\" logo also passes on the left, traveling forward down the highway. The elevated pedestrian walkway continues along the right side, with additional graffiti including bicycle-shaped tags visible on the noise wall below it. A large blue overhead directional road sign mounted on a metal gantry comes into clear view ahead, displaying legible white text reading \"TORSLANDA\" alongside straight-ahead and right-turn arrow symbols for route guidance.\n[8.4s-10.6s]: A white commercial cargo van enters from the left adjacent lane, accelerates past the camera vehicle, and proceeds ahead down the highway. The camera vehicle travels under the blue overhead gantry sign, after which the right-side noise wall transitions to a lower concrete retaining wall topped with metal safety fencing, with several vertical flags mounted on poles beside the fence. Green traffic lights are visible in the far distance ahead, and smaller passenger vehicles can be seen traveling in the far left lanes beyond the concrete median. The teal box truck remains directly ahead in the center lane, and the wet asphalt road surface shows faint tire marks and subtle reflections from the diffused overcast daylight.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-002/camera_front_tele_30fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-2.0s]: The view is a first-person forward-facing perspective from a vehicle traveling on a paved multi-lane road under overcast, flat gray lighting with muted color saturation. Directly ahead in the right lane sits a large blue box truck with visible scuffs and wear on its rear panel, illuminated red taillights, a white rear bumper printed with the text \"KRONE\", and a license plate. In the adjacent left lane, a semi-truck pulling a bright red shipping container moves forward; the container displays white freight markings including weight specifications, a white stylized logo, and alphanumeric identification markings, while the trailer's rear shows \"Flegl\" branding and a license plate. A silver Volvo cab is partially visible behind the red container trailer. To the far right of the road runs a metal W-beam guardrail bordered by a grassy embankment, beyond which stands a green-painted metal truss pedestrian overpass supported by concrete pillars. White dashed lines separate the travel lanes, and a ribbed white tactile paving strip runs along the right edge of the right lane next to the guardrail.\n[2.0s-4.5s]: A silver Toyota SUV with a visible license plate enters the frame from the left, moving forward into the middle lane between the camera vehicle and the red container semi, accelerating past the camera position. As all vehicles continue forward, a large blue overhead directional road sign comes into clear view above the roadway, marked with white text and arrows: a straight-ahead arrow points to destinations listed as \"N HAMNSSTRANDEN\", \"ERIKSE\", \"Hamn\", while a rightward exit arrow points to \"RAMBERGET\". Green traffic lights become visible further down the road, alongside yellow diamond-shaped priority signs and green regulatory signs depicting a highway lane ending (a crossed-out lane symbol). A digital display mounted on the pedestrian overpass shows red text reading \"15:58 11°C\" next to a \"tanka\" logo. Additional passenger cars are visible on the opposite carriageway separated by a low concrete barrier to the left, and leafy green trees line the distant roadside.\n[4.5s-7.5s]: The camera vehicle continues following the blue KRONE truck toward the intersection, where the traffic light remains green. The red container semi and silver SUV proceed through the intersection ahead. A white commercial van with red and blue diagonal reflective stripes on its rear corners, \"NCC\" branding on its side panel, and a visible license plate enters the frame from the left, moving forward into the left lane. The right-side guardrail curves gently as the road approaches the intersection, and a black sedan becomes visible stopped on a perpendicular side road to the right, beyond the guardrail. Low-rise buildings, flagpoles flying flags, and mixed leafy and bare deciduous trees fill the background ahead of the intersection.\n[7.5s-10.5s]: All visible vehicles proceed through the green-lit intersection. The white NCC van travels straight in the left lane, while the blue KRONE truck stays in the right lane, passing directly beneath the illuminated green traffic light mounted on a pole at the right corner of the intersection. The silver SUV and red container semi continue straight ahead past the intersection, moving out of closer view. A partial view of a white passenger car appears at the far left edge of the frame as the camera vehicle crosses the white painted stop line marking the intersection threshold. The grassy right embankment continues alongside the curving guardrail, and additional roadside signage including a blue street name sign is visible near the right intersection corner.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-002/camera_front_wide_120fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-1.5s]: The view is a first-person dashcam perspective from inside a Mercedes-Benz vehicle, with the light-colored hood and centered Mercedes three-pointed star logo visible in the immediate foreground, traveling forward on a damp multi-lane highway under an overcast gray sky. Directly ahead in the right travel lane is a large box truck with a solid teal rear; to its left in the adjacent middle lane is a semi-truck hauling a red shipping container marked with white \"MAERSK\" text, a white star logo, and multiple white shipping labels on its rear doors. A black passenger car passes quickly in the far left lane, exiting the frame to the left. Overhead spans a green metal truss pedestrian overpass, with an attached sloped staircase running along the right side of the road. To the right of the travel lanes is a grassy embankment, metal guardrail, and tall concrete sound barrier wall covered in black and multicolored graffiti; blue construction cranes are visible behind the wall. To the left, a concrete median separates opposing traffic, where a blue semi-truck and other vehicles are visible further back. The vehicle moves forward, passing under the main span of the pedestrian overpass.\n[1.5s-4.0s]: As the vehicle continues forward past the overpass span, a silver SUV enters the frame from the left, merging into the middle lane ahead of the camera vehicle and accelerating past the red Maersk container semi. Additional vehicles including a red sedan and multiple white passenger cars are visible in the opposing lanes across the concrete median. The sloped staircase section of the green pedestrian overpass runs parallel to the road on the right, supported by angled green metal beams set into concrete footings on the grassy embankment. White dashed lane markings divide the travel lanes, and a textured rumble strip runs along the right edge of the travel lane next to the guardrail. Green leafy deciduous trees line the left side beyond the median, and a tall streetlight pole comes into view ahead.\n[4.0s-7.5s]: White painted directional arrows appear on the asphalt: the right lane occupied by the teal box truck displays a combined straight-ahead and right-turn arrow, while the middle lane displays a straight-ahead arrow. A large blue overhead highway sign mounted on a metal gantry becomes fully legible ahead, showing white text: \"E55 \u00d6CKER\u00d6 TORSLANDA\" above two upward-pointing straight arrows, \"N \u00c4LVSTRANDEN -ERIKSBERG Hamnar\" below the left straight arrow, and \"RAMBERGET Volvo Lundby\" next to a rightward exit arrow. A white work van with red and blue horizontal stripes, \"NCC\" branding on its side, and a roof rack enters from the left, merging into the middle lane behind the silver SUV and accelerating forward. The graffiti-covered concrete sound barrier continues along the right, and green traffic lights become visible in the distance ahead. Opposing traffic across the median includes a red semi-truck and additional passenger cars.\n[7.5s-10.5s]: The vehicle approaches the signalized intersection, passing under the blue overhead sign gantry. Green and red diagonal chevron signs marking the right exit ramp are mounted on posts beside the right guardrail, alongside yellow diamond-shaped priority warning signs. On the right embankment, commercial signage for \"tanka\" (a fuel station) is visible, with red digital price displays mounted above the brand logo. The traffic lights ahead remain green as the teal box truck and NCC-branded work van proceed straight through the intersection approach. A second white work van with dark blue lower trim and partially legible side text enters from the left, moving into the middle lane behind the NCC van. The road surface remains damp, lighting stays flat and diffused from the overcast sky, and the Mercedes hood remains positioned in the bottom foreground of the frame as the vehicle continues forward toward the intersection.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-002/camera_left_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-2.5s]: The view is a first-person forward-facing perspective from a moving vehicle, captured with a fisheye lens that creates curved distortion at the frame edges; the light-colored hood of the camera vehicle is visible along the bottom edge of the frame. The scene takes place on a multi-lane divided asphalt highway under an overcast gray sky, with flat diffused lighting and no harsh shadows. A concrete median barrier separates opposing traffic lanes in the midground, and a metal truss pedestrian overpass spans across the road ahead. In the right travel lane, two large trucks (one carrying a red shipping container, one with a teal enclosed cargo box) drive forward away from the viewer. A silver SUV approaches from the left adjacent lane, travels across the front of the camera vehicle toward the right, and merges into the right lane ahead to follow the trucks. Opposing traffic including passenger cars is visible behind the concrete median, with green leafy trees, tall street lamps, a distant tall building, and construction cranes visible in the far background.\n[2.5s-7.0s]: The camera vehicle continues moving forward, passing underneath the metal truss pedestrian overpass. A blue semi-truck with a long blue trailer travels past in the opposing lanes behind the concrete median. A white Mercedes-Benz van marked with red and blue emergency service stripes, roof-mounted emergency lights, and a small orange warning light on its front bumper approaches from the left adjacent lane, moves across the front of the camera vehicle toward the right, and merges into the right lane ahead to follow the silver SUV and the two large trucks. White dashed lane markings are clearly visible on the gray asphalt road surface, and additional passenger cars continue to pass in the opposing lanes behind the median.\n[7.0s-10.5s]: After the striped emergency van merges ahead, a plain unmarked white Mercedes-Benz delivery van approaches from the left adjacent lane, travels across the front of the camera vehicle toward the right, and merges into the right lane ahead to follow the emergency van. As the camera vehicle progresses forward, a large blue overhead directional road sign comes into clear view on the right side of the road, displaying legible white text: \"155 4km \u00d6CKER\u00d6\", \"TORSLANDA\", \"N ALVSTRANDEN ERIKSBERG\", \"TORSBODA\" alongside straight-ahead and right-turn arrow symbols. Further ahead, the concrete median transitions to a metal guardrail, more passenger cars are visible traveling in both directions, and traffic signals mounted on poles come into view in the distance. The fisheye lens distortion remains consistent throughout, and the overcast, hazy atmospheric conditions persist until the end of the clip.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-002/camera_rear_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-1.5s]: The view is a first-person forward-facing perspective from a moving vehicle, captured with a fisheye lens that creates curved edge distortion and a dark circular vignette around the frame; portions of the host vehicle's white body are visible at the bottom left and right edges of the frame. The setting is a multi-lane divided asphalt highway under an overcast gray sky, with soft diffused daylight and no harsh shadows. A metal guardrail runs along the left road edge, adjacent to a weathered concrete sound barrier wall marked with brown rust stains and white louvered vent panels; a tall leafy deciduous tree stands behind this wall. White dashed lines separate the travel lanes, with a textured rumble strip running between the leftmost lane (occupied by the camera vehicle) and the middle lane. In the middle lane ahead, a silver SUV travels in the same direction as the camera vehicle before passing out of the right edge of the frame. Distant vehicles including a red car and a white van are visible further down the straight road, and construction cranes plus additional trees appear in the far background beyond the right-side concrete median barrier.\n[1.5s-4.5s]: The camera vehicle continues moving forward along the leftmost lane. The initial rust-stained section of the left sound barrier passes out of view, revealing a longer stretch of light gray concrete sound barrier covered in stylized graffiti tags in black, white, and red. A large arched metal truss pedestrian overpass comes into view ahead, spanning all lanes of the highway. A blue heavy goods truck travels in the opposite direction on the carriageway separated by the right concrete median, passing across the right side of the frame. A white high-roof cargo van with red and blue accent stripes approaches from behind in the middle lane, moving faster than the camera vehicle. Tall double-headed street lamps line the right roadside, and a tall narrow industrial tower structure is visible in the distant center-right background.\n[4.5s-6.0s]: The camera vehicle passes under the metal truss pedestrian overpass, whose lattice steel framework fills the upper portion of the frame briefly. The red-and-blue accented white cargo van draws alongside the camera vehicle in the middle lane, then pulls ahead and exits the right edge of the frame. A large white painted directional arrow pointing straight and slightly right becomes visible on the asphalt surface of the leftmost lane. The graffiti-covered left sound barrier and metal guardrail remain parallel to the road, and the blue truck on the opposite carriageway moves further into the distance.\n[6.0s-8.5s]: After clearing the first pedestrian overpass, a second plain white high-roof cargo van approaches from behind in the middle lane, traveling faster than the camera vehicle. This white van passes alongside the camera position and exits the right edge of the frame. Further back in the middle lane, a red sedan follows the earlier traffic, maintaining its forward path. The right roadside now shows clusters of green leafy deciduous trees behind the concrete median, and the tall industrial tower remains visible in the distance. A second metal truss overhead gantry structure comes into view further down the highway.\n[8.5s-10.5s]: A white semi-trailer truck with legible \"frs\" text printed on the side of its trailer travels in the opposite direction on the far carriageway, passing across the right side of the frame. The camera vehicle continues forward, approaching the second overhead metal gantry which supports a large blank rectangular sign panel. The left sound barrier transitions to a solid concrete section topped with metal safety fencing, and the red sedan remains visible ahead in the middle lane, with smaller distant vehicles visible further down the straight highway. Overcast, flat lighting persists across the scene for the duration of the clip.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-002/camera_rear_left_70fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-1.5s]: The view is a first-person forward-facing perspective from a vehicle traveling on a wet, dark asphalt multi-lane road under uniformly overcast gray skies. A concrete Jersey barrier runs along the right edge of the travel lanes, separating opposing traffic directions; white dashed lines mark lane divisions, and a solid white line with raised reflective markers runs along the base of the barrier. In the midground left lane, a silver Toyota SUV bearing a visible license plate travels toward the foreground, growing in apparent size as it approaches before passing out of the frame to the right. Further back in the same lane, a white high-roof Mercedes van with illuminated headlights approaches, followed by a red sedan and additional distant passenger cars. Behind the concrete barrier, a white hatchback and black station wagon are visible in the opposite-direction lanes, alongside green leafy deciduous trees, tall dual-head street lamps, an overhead metal gantry holding road signs, a tall unfinished skyscraper surrounded by scaffolding, multiple construction cranes, and stacks of large cylindrical concrete pipes at a roadside construction site.\n[1.5s-6.0s]: After the silver SUV exits the frame, the approaching white high-roof Mercedes van becomes fully visible: it has blue and red accent stripes along its sides, NCC branding on its front and doors, an orange warning light bar mounted to its roof, illuminated headlights, and a visible license plate. It continues moving toward the foreground, passing very close to the camera position before exiting the frame to the right. As this van passes, two large blue semi-trucks with matching trailers decorated with printed graphics of people and food imagery travel past in the opposite direction behind the concrete barrier. A green metal truss pedestrian overpass comes into view spanning across the full width of the road ahead. Additional vehicles including a second white Mercedes van follow the NCC van in the approach lane, while the red sedan remains visible further back in the leftmost lane.\n[6.0s-9.0s]: Following the NCC van's exit, a plain white Mercedes-Benz Citan van with a black lower front bumper, illuminated headlights, and a visible license plate approaches in the middle lane, growing in apparent size before passing out of the frame to the right. Behind the concrete barrier, a yellow Volvo-branded tracked excavator is visible at the active construction site, alongside parked passenger cars and stacked building materials. The green metal pedestrian overpass remains visible spanning the road above. The red sedan in the leftmost lane continues approaching, with other distant passenger cars visible further down the straight roadway.\n[9.0s-10.5s]: After the plain white Mercedes van exits the frame, a large white semi-trailer truck with a red cab, marked with \"Flanders Road Services\" text, a stylized logo, and a blue \"45\" speed marking on its rear, travels past in the opposite direction behind the concrete barrier. The concrete barrier transitions to a metal W-beam guardrail on the right side of the road, where a circular speed limit sign displaying \"60\" and a green rectangular highway route sign are mounted on posts beside dense green bushes and trees. The tall scaffolded skyscraper and construction cranes remain visible in the distant background, the red sedan continues approaching in the leftmost lane, and additional oncoming passenger cars are visible further down the wet roadway. Lighting remains flat and diffused from the overcast sky, with no distinct shadows cast on the damp road surface.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-002/camera_rear_right_70fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-2.5s]: The view is a first-person eye-level perspective from a moving vehicle traveling forward along a paved asphalt road, with the edge of the filming vehicle's light-colored body visible at the far right of the frame. A grey metal W-beam guardrail runs parallel to the road in the immediate left foreground, separating the road from a sloped grassy verge dotted with small yellow dandelions and scattered litter including pieces of paper and plastic. Behind the guardrail stands a long low corrugated metal industrial building: its right section is heavily rusted brown, fitted with multiple white louvered rectangular vents, while its left section is faded off-white, marked with large red bubble-style graffiti reading \"GKSS WC\" alongside smaller black spray-paint tags. A birch tree with pale white bark and fresh green spring leaves grows against the rusted portion of the building, and a rocky, sparsely vegetated hill rises behind the structure under a uniformly overcast, dull grey sky. On the right side of the road, a red passenger car travels in the same direction as the camera, with additional distant vehicles visible further down the straight stretch of road; a raised road sign gantry spans the road in the far distance. As the vehicle moves forward, more of the off-white section of the building comes into view, revealing a barred metal access door set into its wall.\n[2.5s-6.0s]: Forward travel continues, bringing a series of heavy green-painted steel support pillars mounted on square concrete footings into view on the grassy verge; these pillars brace an elevated enclosed pedestrian overpass that extends across the scene above the verge and buildings. Additional sections of grey corrugated metal fencing covered in multi-colored graffiti (black, purple, pink, and white stylized tags) come into view behind the pillars, replacing the earlier rusted building facade. Patches of bare gravel appear on the sloped verge between the guardrail and fence, mixed with more scattered trash. Behind the fence, construction equipment becomes visible: a blue articulated aerial lift with legible text \"kranpunkt.se\" printed on its arm, and a red telescopic crane arm positioned adjacent to it. The red car remains visible ahead on the right lane, maintaining consistent distance as both vehicles proceed.\n[6.0s-10.5s]: The vehicle passes beneath the pedestrian overpass, whose dark metal truss underside and grated walkway surface are visible overhead. More graffiti covers the continuous grey corrugated fence running parallel to the road, including large black bubble-letter tags, yellow-outlined stylized lettering, and smaller handwritten tags such as \"FEXER\". The line of steel support pillars for the overpass recedes behind the viewpoint as travel continues. Further ahead, the fence gives way to a tall, smooth grey concrete retaining wall topped with metal safety railing, which forms the approach abutment for the overpass; a bright green construction machine is partially visible behind this wall. The road curves gently to the right in the far distance, where a queue of slow-moving or stopped traffic is visible, including the red car and several other passenger vehicles. Lighting remains flat and diffused from the overcast sky, with no strong shadows, and the overall color palette is muted, dominated by greys, rust browns, grass greens, and the bright red of the leading car.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-002/camera_rear_tele_30fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-4.8s]: The scene takes place on a multi-lane divided asphalt road under overcast, hazy gray conditions with muted low contrast and soft diffused lighting; all visible vehicles have their headlights illuminated. The camera travels forward at eye level in a first-person driving perspective, framing the two travel lanes ahead. A corrugated metal guardrail runs along the left edge of the travel lanes, bordered by a narrow grassy strip; beyond it sit weathered rust-brown corrugated metal industrial buildings, a white-barked birch tree with green foliage, and a rocky hillside rising in the far left background. A concrete Jersey barrier runs along the right edge, separating traffic from an adjacent construction zone where a yellow excavator marked with \"CAT\" is parked among several stationary passenger cars. Overhead, tall streetlight poles line the road, and a large metal gantry holding two blank rectangular sign panels spans the road in the mid-distance. In the left travel lane, a bright red Volvo sedan with distinctive T-shaped LED daytime running lights approaches the camera, positioned centrally in the lane, with a dark-colored car following directly behind it. In the right travel lane, a white Mercedes-Benz work van with blue and red side stripes, orange roof emergency light bar, \"NCC\" branding on its hood, and a visible license plate approaches the camera, followed by a smaller plain white Mercedes-Benz van further back. A partial dark gray SUV is visible at the far right edge of the frame at the start, exiting view immediately as the camera moves forward. As the segment progresses, the NCC-branded work van draws closer to the camera before passing out of the right edge of the frame.\n[4.8s-7.2s]: The camera continues moving forward along the road. The smaller plain white Mercedes-Benz van, bearing a visible license plate, advances in the right lane toward the camera, while the red Volvo sedan remains in the left lane approaching the camera. Red stylized bubble-letter graffiti becomes visible on the white-painted lower section of the left-side corrugated metal wall as the camera passes the initial brown building facades. A blue heavy truck with rows of red marker lights mounted on its cab roof comes into view behind the concrete barrier on the right, traveling in the opposite direction away from the camera. White painted directional arrows appear on the asphalt surface: the left lane displays a combined straight-ahead and left-turn arrow, while the right lane displays a straight-ahead arrow. The smaller white Mercedes van draws alongside the camera position, beginning to exit the right edge of the frame.\n[7.2s-10.6s]: The camera continues forward, passing under a green metal truss pedestrian overpass that spans both travel lanes. The red Volvo sedan activates its amber right turn signal, gradually shifting laterally from the left lane into the right lane as it moves past the camera, exiting the right edge of the frame by the end of the segment. The dark-colored car previously following the red Volvo, now identifiable as a black sedan with a yellow front license plate, moves into the left lane approaching the camera. Additional oncoming traffic, including multiple white vans and passenger cars, is visible further down the left lane in the distance. The blue heavy truck remains visible behind the right concrete barrier, and a large white box truck enters the far right edge of the frame late in the segment. The overcast, hazy lighting persists across the scene, with no harsh shadows or bright highlights.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-002/camera_right_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-2.5s]: The view is a first-person forward perspective from inside a moving vehicle, captured with a fisheye lens that creates strong curved distortion at the frame edges; white interior car trim and a partial dark sticker with unreadable text are visible along the bottom left and right borders of the frame. A silver metal W-beam guardrail runs horizontally across the midground, separating the gray asphalt travel lane (marked with white dashed lane lines) from an opposite-direction lane on the far left. A teal semi-truck travels in the opposite direction on the far left, while a red passenger car drives ahead in the same travel lane to the right. Behind the guardrail, a sloped grassy embankment supports a long, low single-story building: its near end has a weathered beige corrugated metal wall, followed by a rust-streaked brown corrugated metal section with three closed white louvered vents, then a light gray paneled section marked with bright pink stylized graffiti. To the left of this building stands a green-painted steel truss pedestrian overpass with concrete support pillars set into the embankment, fronted by a tall gray concrete sound barrier covered in multi-colored spray-paint graffiti tags. A tall, narrow deciduous tree rises behind the far end of the building, under a uniformly overcast pale gray sky. As the vehicle moves steadily forward, the beige end of the building exits the frame to the right, revealing more of the graffiti-covered sound barrier and additional sections of the overpass structure.\n[2.5s-8.5s]: The vehicle continues forward, passing directly beneath the arched span of the green steel pedestrian overpass. The overpass's lattice-style truss framework fills the upper portion of the frame as it passes overhead, supported by evenly spaced concrete pillars anchored into the grassy embankment. The gray graffiti-covered sound barrier remains continuous behind the guardrail, displaying black, purple, and white spray-painted tags alongside the earlier pink markings. The teal semi-truck stays visible in the opposite left lane, and the red passenger car maintains its position ahead in the right travel lane. The tall narrow tree gradually shifts toward the right edge of the frame before exiting view entirely. Diffused, even lighting from the overcast sky persists, with no harsh shadows cast across the scene.\n[8.5s-10.5s]: After clearing the overpass span, the vehicle approaches the bridge's concrete abutment on the left side of the road. The solid gray concrete retaining wall of the bridge approach comes into view, topped with metal safety fencing holding several small blue flags. A tall lattice-style metal floodlight tower rises above the wall, and a cluster of commercial signs appears on the left roadside: a prominent sign with red \"media\" text at the top, smaller white directional signs below it, and a green-and-white branded gas station sign further down the road. Distant traffic lights showing green signals and scattered trees are visible far down the straight roadway. The teal semi-truck remains in the opposite left lane, and the red passenger car continues traveling ahead in the right lane. The fisheye lens distortion and overcast, flat lighting remain consistent through the end of the clip.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-003/camera_cross_left_120fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0s-2.0s]: The scene is a nighttime multi-lane asphalt road, captured from a first-person forward-moving perspective consistent with dashcam footage. Double yellow lines run down the center of the travel lanes, and a solid white line marks the right edge of the lane. Tall gray metal streetlight poles with illuminated cool-white lamps line both sides of the road, casting light onto the pavement. Dense green leafy trees and low-rise buildings sit behind grassy verges on the left side of the road. A dark-colored passenger car travels across the intersection from frame-right to frame-left, exiting the frame at the left edge. Further ahead in the right-side lanes, multiple vehicles are visible: one vehicle displays bright red taillights, while distant vehicles show small bright headlight points against the dark sky. Visible motion blur affects passing objects due to the camera's forward movement.\n[2.0s-5.5s]: The camera continues moving forward toward the signalized intersection. Overhead traffic lights mounted on curved gray metal arms come into clear view, displaying steady red signals for cross traffic; a green street sign with illegible text is attached to the same pole assembly. A sequence of vehicles crosses the intersection perpendicular to the camera's path, traveling from frame-right to frame-left: first a dark sedan, then a light-colored SUV, then another dark sedan, all with headlights or taillights illuminated as they pass. Concrete sidewalks, low commercial buildings, and additional leafy trees line the far corners of the intersection. Distant oncoming vehicles in the opposite travel lanes remain visible as small bright headlight points down the straight stretch of road ahead.\n[5.5s-10.5s]: After passing through the intersection, the road curves gently to the right, and the double yellow center lines transition to a single yellow line along the right edge of the travel lane adjacent to a paved shoulder. The right roadside becomes lined with dense dark green bushes and tall mature trees, which partially obscure a low, single-story building with multiple warm-white exterior wall-mounted lights illuminating its facade. As the camera moves past this section, thick tree foliage briefly covers most of the forward view, creating darker, lower-visibility conditions before the lit building re-emerges behind the vegetation. Motion blur persists on passing roadside elements, and no other nearby vehicles are visible in the immediate travel lane during this segment, with only faint distant lights visible further down the curving road.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-003/camera_cross_right_120fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0s-3.5s]: The view is a first-person perspective from a moving vehicle traveling forward on a paved multi-lane urban road at night. The dark asphalt road has white dashed lane markings, and a concrete curb runs along the right edge separating the road from a sidewalk lined with dense, dark green leafy trees. Behind the trees are multi-story residential buildings with warm yellow exterior wall lights and scattered lit windows. Tall streetlights cast bright cool-white light over the roadway, and green traffic signals are visible in the far distance ahead on the left side of the frame. As the vehicle moves forward, roadside elements including trees, utility poles, and building facades pass rapidly from the foreground toward the background, with noticeable motion blur consistent with driving speed.\n[3.5s-5.0s]: The vehicle reaches and enters a signalized intersection. Overhead metal traffic signal poles span the cross street, holding illuminated red left-turn arrow signals for cross traffic, green through-traffic signals for the vehicle's direction, and green street name signs with unreadable text mounted to the poles. On the near corner to the right, a small tree with reddish-pink foliage stands next to low landscaped shrubs, and several parked cars line the far curb of the cross street. White painted crosswalk lines mark the intersection pavement, and additional lit streetlights illuminate the corner area. The vehicle continues straight through the intersection, passing under the traffic signal structure as it exits onto the next block.\n[5.0s-10.6s]: After clearing the intersection, the vehicle continues traveling straight along the same multi-lane road at night. The right roadside remains lined with dense green deciduous trees, grassy planting strips between the curb and sidewalk, and continuous multi-story residential buildings with lit windows and warm exterior entry lights. A section of red-painted curb appears along the right edge as the vehicle passes a property entrance. Further down the road on the left, another set of distant traffic signals glows red, with small points of light from other vehicles' headlights and taillights visible far ahead. Streetlights continue to cast even illumination over the roadway, motion blur persists on passing roadside vegetation and structures, and no pedestrians or moving vehicles appear in the immediate travel lanes for the remainder of the clip.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-003/camera_front_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0s-3.5s]: First-person forward-facing dashcam view with slight fisheye distortion and dark circular vignetting from the vehicle's windshield frame, traveling straight on a multi-lane asphalt road at night. The road is marked with white lane lines: a solid white line runs along the left edge of the travel lanes separating opposing traffic, dashed white lines divide same-direction lanes, and a solid white line marks the right edge adjacent to a concrete curb. Tall illuminated streetlights line both sides of the road, producing bright starburst lens flare against the pitch-black night sky. Leafy deciduous trees stand behind sidewalks on both sides; parked cars are visible along the left curb, and low-rise buildings with small lit exterior windows sit behind the right-side sidewalk. Distant oncoming vehicles in the opposing left lanes have bright white headlights activated, while vehicles ahead in the same direction show faint red taillights far down the road. Traffic signals suspended over the upcoming intersection display green lights for through traffic, with red lights lit for cross-street directions. The vehicle moves steadily forward toward the intersection, with the shadow of its hood occasionally visible on the lower portion of the road surface.\n[3.5s-4.5s]: The vehicle enters and travels through the signalized intersection. Wide white painted crosswalk markings stretch across all lanes of the road. Cross-traffic traffic signals mounted on poles at both left and right corners of the intersection glow bright red. A light-colored SUV waits at the stop line on the left cross street, facing toward the main road. An overhead horizontal traffic pole spanning the intersection holds a green street sign with legible text reading \"ELMWOOD\", positioned directly below the green through-traffic signal. The vehicle continues straight without stopping, passing under the traffic signal structure as it exits the intersection.\n[4.5s-10.5s]: After clearing the intersection, the vehicle maintains steady straight travel along the same multi-lane road. Illuminated streetlights continue to line both sides, casting even light on the asphalt and producing occasional lens flare as they pass overhead. Dense leafy trees line both curbs, interspersed with low-rise commercial and residential buildings; some building windows emit warm interior light, and parked cars remain visible along the left curb. White dashed lane dividers and solid edge lines stay clearly visible on the road surface, and the vehicle's hood shadow appears intermittently on the pavement ahead. Far down the straight road, clusters of distant streetlights and the red taillights of preceding vehicles are visible against the dark sky. No other moving vehicles enter the immediate travel lanes during this segment, and the first-person forward perspective remains consistent as the vehicle progresses down the road.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-003/camera_front_tele_30fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-3.5s]: The view is a first-person forward-facing perspective from a moving vehicle at a nighttime signalized intersection, with slight haze and lens flare from bright lights reducing long-distance visibility. Overhead horizontal traffic signal poles span the road: green street signs with white text reading \"Ringwood\" are mounted on the poles, alongside illuminated red left-turn arrow signals for cross traffic, illuminated green circular through-traffic signals, and a white regulatory sign marked with a black U-turn symbol. The asphalt road has clear white lane markings: dashed white lines separate same-direction travel lanes, a solid white line marks the left edge of the camera's travel lane adjacent to a paved median, double yellow lines run along the far left side of the road, and white stop bar markings cross the lanes at the intersection threshold. In the leftmost oncoming lane, a dark-colored van travels across the frame toward the left edge before exiting view; further back in the oncoming lanes, multiple cars approach with bright, glaring white headlights activated. Tall overhead streetlights cast cool white light over the intersection, creating soft glows against the dark night sky. On the right side of the road, tall dense evergreen trees line the concrete sidewalk, with additional traffic signal poles displaying lit red pedestrian \"don't walk\" indicators. Multiple vehicles ahead in the same travel direction show glowing red taillights as they move through the green-lit intersection. The camera moves steadily forward, passing under the overhead signal structure as it crosses the intersection.\n[3.5s-7.0s]: After crossing the intersection, the vehicle continues traveling straight along the multi-lane road, which begins a gentle upward slope and curves gently to the right in the distance. A large box truck with a pale pink cargo trailer is visible ahead in the left portion of the roadway, its rear facing the camera as it moves forward. Dense, dark leafy trees and low shrubs line both sides of the road; the left roadside features a cobblestone-textured shoulder strip bordered by thick bushes, while the right roadside has grass verges, mature trees, and partially visible residential buildings set back behind vegetation. Streetlights continue to illuminate the roadway, casting dappled shadows from tree foliage onto the asphalt surface. Distant vehicles ahead remain visible by their glowing red taillights, and oncoming vehicles in the opposite lanes continue approaching with bright headlights that create noticeable glare. The camera maintains steady forward motion, gradually closing the distance to the curve ahead.\n[7.0s-10.6s]: As the vehicle approaches the curved section of road, two passenger cars (one white, one dark-colored) come into clear view stopped at the next signalized intersection ahead on the right side of the curve, their red brake lights illuminated. An oncoming dark-colored sedan with bright, glaring white headlights travels directly toward the camera in the opposite travel lane. Traffic signals mounted on a pole at the upcoming intersection display red lights for cross traffic, with a green street sign and a white route marker sign showing the number \"71\" attached to the same pole. Multi-story residential buildings with small lit windows become visible on the right side of the road behind the roadside trees, and additional streetlights are positioned along the curve to illuminate the roadway. The camera continues steady forward movement toward the curve, with the oncoming sedan growing progressively larger in the frame as the distance between the two vehicles decreases.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-003/camera_front_wide_120fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-4.5s]: The view is a first-person forward perspective from inside a moving vehicle, with the vehicle's hood visible in the lower foreground and a small black Mercedes-Benz three-pointed star emblem centered on the hood. The scene takes place at night under a dark sky, with slight haze creating soft glare around all illuminated light sources. The road is a multi-lane asphalt thoroughfare marked with white dashed lane dividers, a solid white left edge line, and double yellow center lines separating opposing traffic. Overhead streetlights cast warm white light along both sides of the road, which are lined with dense leafy trees and low-rise buildings; some building windows glow with interior light. Traffic signals suspended over the upcoming intersection display green lights for the forward travel direction and red lights for cross traffic. Oncoming vehicles in the opposite lanes have bright, glowing white headlights, while multiple vehicles in the adjacent left same-direction lane travel across the frame toward the left as the vehicle approaches the intersection. White painted crosswalk markings span the road at the intersection threshold. As the vehicle moves steadily forward through the green-lit intersection, it passes under the horizontal traffic signal pole, where a green street sign with white text reading \"THOMPSON\" is mounted directly above the travel lanes.\n[4.5s-10.6s]: After clearing the intersection, the vehicle continues traveling straight along the multi-lane road. A paved median with grassy edging separates the forward travel lanes from opposing traffic on the left, while a concrete sidewalk runs parallel to the road on the right, bordered by dense trees and low-rise buildings with lit exterior fixtures and windows. Overhead streetlights continue to illuminate the roadway at regular intervals, producing consistent lens flare against the dark night sky. The road surface ahead displays white painted directional turn arrows marking dedicated left-turn and right-turn lanes further down the route. Distant vehicles ahead show glowing red taillights, while occasional oncoming vehicles in the opposite lanes have bright white headlights. As the vehicle progresses, it passes large, broad-canopied trees on the left roadside that move quickly out of the left edge of the frame. A second set of overhead traffic signals comes into clear view in the far distance ahead, displaying red lights for the forward direction of travel. The footage maintains a photorealistic dashcam visual style, with steady forward camera motion matching the vehicle's speed and no abrupt framing changes throughout the segment.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-003/camera_left_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-2.5s]: The view is a first-person perspective from a moving white vehicle, captured with a fisheye lens that creates curved edge distortion and visible light glare from bright sources. The scene takes place at night on a multi-lane paved asphalt road marked with white lane lines and a painted left-turn arrow in the travel lane. Tall streetlights line both sides of the road, casting bright cool-white illumination over the pavement, while mature leafy trees and low-rise buildings sit behind the curbs on either side. A dark-colored passenger car travels across the intersection ahead, moving from frame-left to frame-right, its red taillights illuminated as it passes through the cross path. Additional vehicles are visible in the distance: some have lit headlights approaching from far down the road, others show red taillights traveling away, and traffic signals on the right side of the intersection display green lights for the direction of travel. The white hood of the filming vehicle occupies the lower right portion of the frame throughout this segment.\n[2.5s-5.5s]: The vehicle continues forward into the intersection, then executes a right turn. As the turn progresses, overhead traffic signal poles come into clear view, displaying red lights for cross-street traffic and green lights for the turning direction. Multiple other vehicles move through the intersection: a light-colored SUV crosses the path from frame-left to frame-right, followed by a dark sedan also crossing from frame-left to frame-right. White crosswalk markings and yellow center lane lines become visible on the intersection pavement as the vehicle turns. After completing the turn, the vehicle enters a narrower two-lane road separated from oncoming traffic by a raised median covered in light brown gravel and sparse low vegetation.\n[5.5s-10.5s]: The vehicle travels straight along the narrow road, which has a solid yellow line along its left edge adjacent to the median and a white line along its right edge next to a paved shoulder. Dense green bushes and tall leafy trees grow on the median between the travel lanes, partially obscuring the view of oncoming traffic and the opposite roadside. Behind the median, low-rise commercial buildings with bright exterior wall-mounted lights are visible, their facades lit against the dark night sky. Streetlights continue to line the right side of the road, casting pools of light on the pavement. Distant vehicles are visible ahead in the same travel lane, showing red taillights, and additional vehicles with lit headlights appear in the oncoming lanes further back. The white hood of the filming vehicle remains in the lower right of the frame, and the shadow of the vehicle's side mirror is cast onto the median surface as the vehicle moves past vegetation.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-003/camera_rear_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0s-3.5s]: The view is a first-person perspective from inside a moving vehicle, framed by the white lower edge of the windshield at the bottom of the frame and a circular fisheye lens distortion bordering the entire view. It is nighttime, with a dark sky overhead. A multi-lane paved asphalt road stretches straight ahead, marked with white dashed lane dividers between travel lanes and a solid white line along the right edge of the forward travel lane. Tall streetlights line both sides of the road, casting bright light that creates visible glare in the dark air; trees and low-rise buildings are visible behind concrete curbs on both left and right sidewalks. Multiple oncoming vehicles with illuminated headlights approach in the opposite left lanes in the distance. A dark-colored passenger car travels in the same direction as the camera vehicle in the right adjacent lane, gradually pulling ahead before exiting the right edge of the frame. The shadow of the vehicle's side mirror moves across the lower portion of the windshield as the vehicle travels forward.\n[3.5s-6.5s]: The vehicle continues moving straight toward a signalized intersection. Overhead traffic lights mounted on horizontal poles come into clear view: red lights are illuminated for cross-street traffic, while green lights are lit for the forward travel direction. White painted directional arrows appear on the asphalt, marking dedicated left-turn and straight-ahead lanes. A rectangular street sign with illegible text hangs above the intersection. Additional vehicles are present at the intersection: some wait on the cross street to the right, others travel through the intersection in the same direction as the camera vehicle. Streetlights continue to illuminate the intersection area, with trees and buildings lining all four corners. The vehicle passes under the traffic light gantry as it enters the intersection.\n[6.5s-10.5s]: After clearing the intersection, the vehicle continues traveling straight along the multi-lane road. The right roadside transitions from a paved shoulder to a narrow strip of bare dirt, then to dense leafy bushes and mature trees that partially obscure the sidewalk and structures behind them. The left roadside remains lined with trees, low vegetation, and set-back buildings. Oncoming vehicles with illuminated headlights remain visible approaching in the opposite left lanes, and distant vehicles ahead show lit taillights as they move forward. Green traffic lights are visible further down the road in the distance. The shadow of the vehicle's side mirror reappears on the lower right portion of the windshield as the vehicle progresses. Fisheye distortion and the white windshield frame remain consistent throughout, with streetlight illumination continuing to light the road surface against the dark night sky.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-003/camera_rear_left_70fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0s-3.5s]: The view is a first-person forward perspective from a moving vehicle traveling along a paved multi-lane urban road at night, with the left edge of the filming vehicle's light-colored body visible along the far left of the frame throughout the sequence. The road features double yellow center lines and white lane edge markings. Tall streetlights line both sides of the road, casting warm yellow illumination across the pavement. On the right side of the road, mature leafy trees stand between the sidewalk and low-rise light-colored commercial buildings; wooden utility poles with overhead wires are spaced along the roadside, alongside regulatory signs including a 45 speed limit sign. Multiple dark-colored passenger vehicles travel in the same direction as the camera in adjacent lanes, their red taillights illuminated, while distant oncoming traffic shows bright white headlights far down the straight road to the left. A green traffic light is visible in the far distance ahead. Motion blur affects passing roadside objects due to the vehicle's forward movement, and the scene has a cool, dim nighttime color palette punctuated by warm streetlight glow.\n[3.5s-6.5s]: The vehicle approaches and enters a signalized intersection, where white crosswalk stripes mark the asphalt. Overhead traffic signals mounted on curved metal poles come into clear view: green lights are lit for the through travel direction, while red lights are lit for cross-street traffic. A green street sign with legible text \"Kingwood\" is attached to one signal pole. Additional dark SUVs and sedans move through the intersection, some traveling straight and others turning, their red taillights visible. On the right corner of the intersection, a low commercial building displays partially legible purple text reading \"OPTIMUS\", fronted by landscaped shrubs, grass, and more mature trees. Streetlights continue to illuminate the intersection area, and motion blur persists on fast-moving nearby vehicles and roadside elements.\n[6.5s-10.5s]: After passing through the intersection, the vehicle continues moving forward along the road. The right roadside transitions from built-up commercial property to dense, dark vegetation including thick bushes and tall trees that obscure most structures behind them, with only faint glows from distant building lights visible through gaps in the foliage. The left portion of the frame retains the view of the straight road stretching into the distance, lined with evenly spaced streetlights, showing the receding red taillights of preceding vehicles and the white headlights of distant oncoming traffic. The green traffic signals for the travel direction remain visible ahead before being partially blocked by overhanging tree branches as the vehicle progresses. Lighting remains dim, dominated by streetlight glow, with deep shadows cast by the dense roadside vegetation, and consistent motion blur on close-passing plants and road surface details.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-003/camera_rear_right_70fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-3.5s]: The view is a first-person perspective from a moving vehicle traveling forward on a multi-lane asphalt road at night, with the edge of the filming vehicle's white body visible along the far right edge of the frame for the full duration. White dashed and solid lane markings divide the road lanes. Oncoming traffic travels in the opposite direction to the right: a light-colored SUV with illuminated headlights is positioned in the closest oncoming lane, with additional vehicles further back showing bright headlight glare. The left side of the road features a concrete curb, grassy planting strips, dense mature leafy trees, and multi-story residential buildings with lit windows and exterior wall-mounted lights. Overhead streetlights cast cool white illumination across the scene, and motion blur affects passing foreground elements as the vehicle moves steadily forward.\n[3.5s-6.5s]: As the vehicle approaches an intersection, red-illuminated traffic lights mounted on metal poles come into clear view on the left roadside, displaying lit red left-turn arrows and red circular stop signals. A green street sign with unreadable text is attached to one traffic light pole. The left roadside continues to show trees, some foliage tinted green by nearby lighting, low shrubs, parked passenger cars along the adjacent cross street, and multi-story residential structures. Faint white painted turn arrow markings appear on the asphalt surface as the vehicle nears the intersection. The oncoming SUV remains visible in the opposite lane, its headlights creating soft glare in the dark conditions, while distant traffic signals far down the straight road glow green.\n[6.5s-10.5s]: After passing through the intersection, the vehicle continues forward along the same multi-lane road. A horizontal traffic signal arm extends over the right side of the road ahead, holding a red rectangular street sign with white text reading \"Ringwood\". The left roadside returns to continuous grassy verges, dense leafy trees (some bearing clusters of pale pink blossoms), low landscaping bushes, and multi-story residential buildings with lit windows. Additional overhead streetlights illuminate the roadway, and more oncoming vehicles are visible in the distance with their headlights activated. Motion blur persists on close-passing foreground vegetation and structures, consistent with steady forward travel, and the scene remains dimly lit by artificial street and building lighting under dark night skies.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-003/camera_rear_tele_30fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-5.0s]: The view is a first-person forward-facing perspective from a moving vehicle traveling at night on a straight multi-lane paved asphalt road, with slight haze and prominent vertical lens flare streaks cast by bright light sources across the frame. In the left adjacent lane, a dark-colored SUV travels in the same direction as the camera vehicle, its two front headlights illuminated; further ahead in that same left lane, a second vehicle also moves forward with bright lit headlights. On the right side of the road, separated by double yellow center lines, multiple passenger vehicles travel away from the camera in the opposite-direction lanes, their red taillights visible. Tall streetlights emitting warm yellow light line both sides of the road, receding into the distance; trees with autumn-toned foliage stand behind the right sidewalk, and residential structures with small lit windows are partially visible behind vegetation on the left. A white speed limit sign marked \"40\" becomes visible on the right roadside as the vehicle progresses. Green traffic lights glow far down the straight road, and a concrete curb runs along the right edge of the roadway.\n[5.0s-7.5s]: As the vehicle continues forward, it approaches a signalized intersection. Overhead horizontal metal traffic signal poles come into clear view, holding illuminated traffic signals: green lights for the through travel direction, red lights for cross traffic, and a lit red left-turn arrow. Two street signs mounted to the overhead pole become legible: a larger rectangular sign reading \"Ringwood\", and a smaller rectangular sign below it reading \"Almaden\". Additional vehicles enter the right-side opposite lanes, including a dark sedan with lit red taillights, and more distant vehicles show red taillights queued near the far intersection. Road markings including white lane dividers, crosswalk lines, and yellow box-junction grid markings become visible on the asphalt surface as the vehicle nears the intersection stop line.\n[7.5s-10.5s]: The vehicle travels through the intersection under the green traffic signal. Dense dark bushes and overhanging tree branches appear along the right roadside, passing close to the frame as the vehicle moves past the intersection corner. The dark SUV remains positioned in the left adjacent lane, continuing forward alongside the camera vehicle. Traffic signals stay green for through traffic, while red signals remain lit for cross-street movements. Streetlights continue to line both sides of the road extending into the hazy dark distance, with additional trees and low vegetation visible along the right roadside beyond the intersection. Lens flare from streetlights and vehicle headlights persists across the frame throughout the movement.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-003/camera_right_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-3.5s]: First-person forward-facing view from a moving vehicle, captured with a wide-angle fisheye lens that produces curved edge distortion and prominent starburst lens flares around bright light sources. The scene takes place at night on a dark asphalt multi-lane road marked with white dashed lane lines; the lower edge of the frame shows the top of the vehicle's hood and windshield wipers. To the left, green-illuminated traffic lights are visible, alongside distant vehicles with glowing headlights and taillights. To the right, a line of oncoming vehicles with bright headlights travels in the opposite direction. Tall leafy trees line both sides of the road, interspersed with tall streetlights emitting bright white light, and low-rise buildings with scattered lit windows sit behind the tree line under a completely dark sky. The vehicle moves steadily forward, approaching an intersection where large white painted directional arrows (indicating left turn and straight travel) become visible on the road surface as it nears the cross street.\n[3.5s-5.5s]: The vehicle enters the intersection, passing beneath overhead traffic signals mounted on horizontal metal poles. The traffic signals facing the vehicle display red lights, while green lights for cross traffic remain visible to the left. Concrete sidewalks and landscaped strips with small shrubs and young trees line the intersection corners, and additional streetlights illuminate the crossing area. Distant vehicles are visible stopped or traveling along the perpendicular cross streets. The vehicle continues moving forward through the intersection, then begins a smooth turn to its own right, shifting the view toward the right-hand branch of the road network.\n[5.5s-10.5s]: After completing the right turn, the vehicle travels along another stretch of dark asphalt multi-lane road at night. Tall leafy trees line the roadside ahead, fronting low-rise residential or commercial buildings with lit windows, and evenly spaced streetlights cast bright white light over the pavement. White dashed lane markings run down the center of the travel lanes, and large white painted directional arrows appear on the road surface as the vehicle approaches a second intersection. A line of oncoming vehicles with illuminated headlights remains visible in the opposite lanes to the right, and distant vehicle lights are visible further down the curving road ahead. The fisheye lens distortion and streetlight lens flares persist throughout, and the vehicle maintains steady forward motion toward the next intersection as the clip ends.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-004/camera_cross_left_120fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-3.5s]: The scene is a sunlit urban street under a clear, cloudless deep blue sky, with warm low-angle sunlight casting long, sharp dark shadows across the road and building facades. A tall, curved light beige high-rise building dominates the midground center, with a large shadow of an adjacent structure cast on its lower right face; bare, leafless deciduous trees stand in front of it, and overhead tram wires with hanging black contact shoes stretch across the upper frame. In the foreground, a queue of cars travels from frame-right to frame-left along the near traffic lane: first a dark gray sedan, followed by a silver compact SUV, then a small silver hatchback, then a white delivery van marked with green circular logos and partially legible green text on its side panels. A cyclist wearing a bright red jacket rides a bicycle between the moving cars near the left curb, alongside several pedestrians standing or walking on the left sidewalk. To the right of the tall curved building, a shorter angular multi-story building with a golden-tiled facade and ground-floor commercial storefronts is visible, with additional parked cars lining the far curb further down the street. The camera moves steadily forward at eye level, with slight wide-angle fisheye distortion visible at the frame edges.\n[3.5s-7.0s]: As the camera continues forward, the white delivery van exits frame-left, and more vehicles pass through the foreground traveling left: a white compact car with green and black branded markings on its doors, a white BMW sedan, a dark gray station wagon, and finally a white utility van. The tall curved high-rise shifts toward the left edge of the frame, revealing more of its vertical glass window facade, while the golden angular building grows more prominent in the right midground. A large bare tree stands between the two buildings, and a cyclist in dark clothing rides a bicycle across the intersection crosswalk from frame-left to frame-right. The cobblestone-paved right curb and sidewalk become visible as the camera approaches the intersection, and a yellow-lit traffic signal mounted on a pole comes into view near the corner of the golden building. Parked cars remain lined along both curbs past the intersection.\n[7.0s-10.5s]: The camera reaches the intersection, where white painted zebra crossing stripes mark the asphalt road surface. The tall curved high-rise sits fully on the left side of the frame, showing its full height of vertical glass windows above a dark, flat-roofed ground-level entrance structure. The golden angular building occupies the right midground, with clearly legible white text \"DESIGNA K\u00d8KKEN\" printed on its ground-floor storefront awning, a round analog clock with a white face and black hands mounted high on its front corner, and a blue parking sign marked with a white \"P\" attached to its corner pole. Red circular no-entry signs are posted on poles at the intersection corners, and rows of parked bicycles line the sidewalk in front of the golden building's storefronts. Additional mid-rise office buildings with grid-patterned windows are visible in the distance down the street beyond the intersection, with more parked cars lining the far curbs. The camera continues moving forward toward the crosswalk, with warm sunlight still illuminating the upper facades of the buildings and long shadows stretching across the intersection pavement.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-004/camera_cross_right_120fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-2.1s]: A silver four-door sedan travels from frame left to frame right across the foreground, passing close to the viewpoint before exiting frame right. Parked along the left curb behind it are a dark SUV and a smaller light-colored passenger car. The background is dominated by a multi-story red brick building with white stone trim, rows of rectangular windows (some reflecting warm golden late-afternoon sunlight), arched ground-floor doorways, and legible storefront text including \"FRIDAS\" on both the upper facade sign and black arched awning, plus \"AMERICAN HAIR STYLE\". Adjacent to the brick building on its right is a beige multi-story building with large reflective ground-floor windows showing reflections of trees and pedestrians. The sky is clear, bright blue, and cloudless. As the silver sedan exits, the camera moves forward along the street, revealing more of the brick building's ground floor: a wide open garage entrance marked with the number \"35\", several parked bicycles on the sidewalk outside, and two people in dark outerwear standing near a small shop entrance, one person pushing a stroller.\n[2.1s-4.3s]: A black-and-white two-tone SUV enters from frame left, travels right across the foreground, and exits frame right, followed immediately by a silver compact hatchback that also travels right across the foreground and exits frame right. As the camera continues moving forward, additional storefronts on the adjacent cream-colored curved corner building come into view: a sign reading \"Fri BikeShop\" above a window with bold red text \"URANIA\", a yellow circular sticker marked \"BIKE\" in the window, multiple bicycles parked outside the shop entrance, and a neighboring coffee shop with a dark awning printed with \"COFFEE FIRST\" and outdoor seating with red and green chairs visible through its glass front. The red Swiss cross logo is mounted on the facades of both the brick and cream buildings. Patches of residual snow line the edge of the asphalt street next to the concrete sidewalk.\n[4.3s-7.5s]: After the silver hatchback exits, the full curved facade of the cream corner building is visible, featuring tall arched windows on its upper floors, rough light-stone cladding on its ground floor, and the same red Swiss cross logos. To the left of this building, a large modern multi-story office building with a green-tinted glass curtain wall comes into view, displaying legible facade text including \"MERGER\", \"valcon\", and \"Ejendomsadministration\". A dark gray station wagon enters from frame left, travels right across the foreground, and exits frame right. Two pedestrians walk along the sidewalk near the bike shop: one wears a long dark puffer coat, dark pants, and light-colored sneakers; the other wears a long gray coat, dark pants, and light shoes. A dense cluster of parked bicycles lines the sidewalk at the base of the green glass building, and a blue minivan with a black roof storage box is parked at the far curb of the intersection ahead.\n[7.5s-10.6s]: The camera approaches and moves through the intersection, where white painted bicycle lane symbols and striped pedestrian crosswalk markings cover the asphalt road surface. The blue minivan drives forward from the left curb across the intersection toward frame right, exiting the frame. A traffic light pole stands at the corner of the green glass building, which has large illuminated ground-floor windows showing interior lighting and partial gold text reading \"HOTLAND\". A blue parking sign marked with a white \"P\" is mounted on a pole at the corner. As the camera rounds the corner, a white SUV enters from frame left, traveling right across the foreground, with a dark passenger car visible behind it. Further down the straight street extending past the intersection, additional parked cars line the curbs, construction scaffolding is attached to the facade of a distant building, and the low sun casts long shadows across the road under the clear blue sky.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-004/camera_front_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-3.5s]: The view is a first-person perspective from a moving vehicle traveling straight forward on a paved urban street, captured with a fisheye lens that creates curved distortion at the frame edges and dark vignetting around the circular field of view. Bright clear daylight illuminates the scene under a cloudless blue sky, with small dark suspended cable car gondolas hanging from overhead wires strung across the street. On the left side of the road, a tall, smooth white curved high-rise building marked with red \"Scandic\" text at its peak stands behind bare, leafless deciduous trees; a line of parked cars including a black SUV, silver compact hatchback, dark sedan, and white delivery van lines the left curb, and two pedestrians in winter outerwear stand on the left sidewalk near the parked vehicles. On the right side, a continuous row of multi-story red brick buildings with ornate white window trim, balconies, and ground-floor commercial storefronts runs along the curb; visible storefront text includes \"EDIRAS\" on an early sign, followed by \"Frit BikeShop\" and \"URANIA\" as the vehicle moves forward. Parked cars along the right curb include a silver sedan closest to the camera, a grey SUV, and a silver hatchback further ahead; a person in dark clothing crouches on the right sidewalk next to a bicycle near the bike shop entrance. As the vehicle progresses, the closest silver sedan on the right exits the frame, the grey SUV passes out of view to the right, and the white delivery van on the left moves past the left edge of the frame.\n[3.5s-7.0s]: The vehicle continues straight forward down the street. The tall white Scandic tower recedes into the left background, revealing a shorter angular beige mid-rise building with red support columns at its ground floor, marked with legible text \"DESIGNA K\u00d6KKEN\" above its entrance, fronted by a large bare tree and additional parked cars along the left curb. A cyclist wearing a light-colored top rides a bicycle along the left sidewalk near this building. On the right, the red brick buildings transition to an ornate cream-colored multi-story corner building with arched windows, displaying a red Swiss cross logo, \"COFFEE FIRST\" signage, and clusters of parked bicycles outside its entrances. A dark grey SUV parked on the right curb pulls out into the travel lane, moving toward the foreground before exiting the frame to the right. Further ahead, a large boxy green-tinted glass office building comes into full view at the upcoming intersection, with rows of rectangular windows across its facade. Strong sunlight casts sharp, dark shadows from the buildings onto the road surface.\n[7.0s-10.6s]: The vehicle approaches the intersection, where wide white painted pedestrian crosswalk stripes span the width of the road. The green glass office building occupies the right corner of the intersection, with legible text \"J-WORLD\" and other smaller business signs on its upper facade, and ground-floor retail spaces with large glass windows; a blue compact car is parked at the right curb near the building's entrance, and a white SUV is parked further along the right curb past the crosswalk. The beige DESIGNA K\u00d6KKEN building sits on the left corner, with a blue parking sign marked with a white \"P\" mounted on a pole at the curb, and more parked cars lining the left street beyond the intersection. Traffic signal poles are visible at the intersection corners. The vehicle continues moving straight toward the crosswalk, with the fisheye distortion and bright, shadow-casting daylight remaining consistent through the end of the clip.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-004/camera_front_tele_30fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-3.5s]: A wide, eye-level view moves steadily forward along an urban asphalt street in bright daytime sunlight, with low-angle warm light casting long shadows and gilding upper building facades. Parked cars line both curbs: on the left, a white Ford van, white Renault hatchback, silver sedan, and dark-colored cars sit adjacent to a sidewalk; on the right, a silver Toyota SUV (license plate), silver compact car, and dark gray Hyundai SUV are parked beside a large multi-story corner building with a green-tinted glass facade. Visible text on this building includes \"vilcon\" at its top edge, a red \"CEJ\" logo next to \"Ejendomsadministration\", and a red-and-white checkered sign. A blue pedestrian crossing sign hangs above the intersection ahead, where a traffic light displays yellow. A black compact car travels straight toward the intersection in the center lane, while a silver Mercedes-Benz approaches from the opposite direction in the left lane, followed by a white van further back. Bare tree branches extend into the frame from the far left, and distant mid-rise buildings are visible down the road. As the camera advances, the silver Toyota SUV exits the right edge of the frame, and a rack of parked bicycles comes into view on the right sidewalk near the corner building.\n[3.5s-7.0s]: The camera continues moving forward toward the intersection. The black compact car reaches the crosswalk marked with thick white horizontal stripes and begins turning left onto the side street running alongside the glass corner building. The silver Mercedes passes the camera position and exits the left edge of the frame, while the white van behind it continues approaching the intersection. A person dressed entirely in dark clothing walks along the right sidewalk away from the corner, passing a blue parking sign marked with a white \"P\". The ground-floor storefronts of the corner building become clearer, showing large display windows, a red \"VORDINGEN\" sign above one entrance, and \"DROP BY\" text on an awning over another shopfront. Patches of slushy snow lie along the right curb, and the rack of parked bicycles remains visible on the sidewalk.\n[7.0s-10.6s]: The camera moves across the crosswalk, continuing forward as the road curves gently left. The black compact car completes its left turn and drives away down the leftward-curving street, growing smaller in the distance. The two parked cars along the right curb (a white Honda hatchback with a visible license plate and a silver SUV) pass close to the right edge of the frame before exiting view. On the left side of the curved street, a large white box truck is parked at the curb, with additional parked cars lining the left sidewalk. Further down the street, a large arched gateway structure draped in pink and purple fabric stands at the end of the block, with a flagpole flying a dark flag rising above nearby rooftops. Groups of pedestrians walk along the left sidewalk, some carrying bags, and a red traffic light is visible above the distant intersection. The sky remains clear and pale blue, and sunlight continues to cast sharp, distinct shadows across the road surface.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-004/camera_front_wide_120fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-3.5s]: The view is a first-person forward-facing perspective from inside a moving vehicle, with the Mercedes-Benz three-pointed star logo visible on the hood at bottom center, and slight wide-angle fisheye distortion curving frame edges. The scene is a sunlit urban street under a clear, cloudless bright blue sky, with low-angle sunlight casting sharp, long shadows across surfaces. Overhead, black suspended trolley wires stretch across the road, strung with dark bell-shaped hanging fixtures. On the left, a large pale yellow curved concrete building dominates the near foreground; further down the left curb, a mid-rise modern office building with a grid of rectangular windows and a clock face on its upper corner stands behind a row of parked cars including a white SUV, dark gray hatchback, white delivery van, and multiple small sedans. Oncoming traffic travels toward the viewer in the left lane, led by a silver sedan approaching in the distance. On the right, a continuous row of multi-story historic buildings lines the curb: the closest structure has red brick upper floors, light stone ground floor, arched windows, and decorative stone trim, followed by an ornate cream-colored building with a pointed turret roof. Parked cars line the right curb, including a silver compact car in the immediate foreground, a dark gray SUV, a white SUV, and additional vehicles receding into the distance. A green-glass faced mid-rise office building sits at the upcoming intersection ahead, with partial signage visible on its facade. As the vehicle moves steadily forward, the nearest parked cars on both curbs pass out of the frame edges, and the intersection grows larger in view.\n[3.5s-7.0s]: The vehicle continues forward toward the intersection. The pale yellow curved building exits the left edge of the frame, revealing more of the left-side modern office building, which displays \"DESIGNA K\u00d8KKEN\" text above its ground-floor storefront supported by red columns; bare deciduous trees stand on the left sidewalk, alongside blue parking signs marked with a white \"P\". On the right, the red-brick historic building exits the frame, bringing the full cream-colored ornate corner building into view, with legible storefront text including \"Fri BikeShop\", \"URANIA\", and \"COFFEE FIRST\", plus red square signs with white logos mounted to its facade. Bicycles are parked along the right sidewalk adjacent to the green-glass office building, where the sign \"MERKLE\" becomes fully legible at its top edge, with smaller brand signs below it. A cyclist rides along the right sidewalk near the intersection corner, and a pedestrian walks nearby. A white van approaches in the left oncoming lane, passing the camera position as the vehicle nears the crosswalk. The traffic light mounted on the green-glass building's corner displays a yellow signal.\n[7.0s-10.5s]: The vehicle enters and crosses the intersection, passing over white-striped pedestrian crosswalk markings on the asphalt. The green-glass office building shifts to the right side of the frame, revealing additional legible text on its facade: \"valcon\" in white lettering, and \"Ejendomsadministration\" lower on the glass, with ground-floor retail spaces fronted by large windows. A blue station wagon is parked at the right curb just past the crosswalk, followed by a line of parked cars including a white hatchback and dark SUV extending down the right side of the continuing straight street. On the left, the \"DESIGNA K\u00d8KKEN\" building runs parallel to the road, with rows of parked bicycles outside its storefronts, a round regulatory traffic sign mounted on a pole at the corner, and more parked cars lining the left curb. Further down the straight street ahead, distant mid-rise city buildings are visible, with a dark passenger car driving away from the viewer in the center travel lane. Sunlight continues to cast warm golden highlights on sun-facing building facades and cool shadow on shaded surfaces, with the clear blue sky remaining overhead. The vehicle maintains steady forward motion down the street as the clip ends.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-004/camera_left_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-7.0s]: The view is a first-person fisheye perspective from a moving white vehicle, with the vehicle's white hood visible in the immediate foreground; a black sticker with reversed white text reading \"Test Vehicle - Volvo\" and a small logo is affixed to the lower left portion of the hood. The scene is a busy urban intersection on a clear, sunny day with bright blue sky, strong sharp shadows cast by low-angle sunlight, and dark asphalt road surface marked with faded lane lines and a horizontal red painted line across the midground. In the background, a distinctive cylindrical building with a wavy golden-brown facade stands on the left, a tall curved off-white high-rise dominates the center-right, a row of bare leafless deciduous trees sits between these structures, and multi-story commercial buildings line both sides of the street, with parked cars lining both curbs. A continuous stream of vehicles travels from frame right to frame left across the intersection directly ahead: first a black SUV, followed by a silver crossover SUV, a silver compact hatchback, a small black two-door car, a white delivery van with a green circular logo on its side panel, a silver four-door sedan, a white hatchback with green and grey markings on its doors, a second white four-door sedan, a black station wagon, and finally a white compact MPV. Pedestrians are visible on the far sidewalks and near the crosswalk, including one person in a bright orange jacket standing near the front of the initial black SUV, and other people walking along the left sidewalk adjacent to the cylindrical building.\n[7.0s-10.5s]: After the final white MPV passes out of frame to the left, the host vehicle continues moving forward toward the raised cobblestone-paved traffic island at the intersection corner. As the vehicle approaches, a cyclist riding a bicycle becomes visible on the left sidewalk near the base of the tall curved high-rise, next to a red-and-white striped bollard. Traffic signs come into clear view: a blue circular mandatory direction sign on the left curb, a blue parking sign marked with a white \"P\", and a circular regulatory sign mounted on a pole to the right. The ground-floor storefront of the angular beige building on the right displays legible text reading \"DESIGNA K\u00d8KKEN\". The vehicle moves up onto the cobblestone island, then proceeds forward past it toward the white-striped pedestrian crosswalk marking the far side of the intersection, with more distant city buildings, additional parked and moving cars, and a small number of pedestrians visible on the far sidewalks as the clip ends.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-004/camera_rear_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-3.5s]: The view is a first-person forward-facing perspective from a moving motorcycle, captured with a fisheye lens that creates curved distortion at the frame edges. A white motorcycle fairing occupies the immediate foreground, marked with large black stylized graphics and a blue EU license plate strip on its right side. The setting is a straight urban two-lane street under a clear bright blue sky, with patches of residual snow along both curbs indicating cold winter conditions; overhead wires strung across the road hold small suspended cable car gondolas. On the left, multi-story buildings line the curb: first a light beige building with rows of rectangular windows and a ground-floor glass storefront, followed by a red-brick building with white window trim displaying the text \"FRIDAS\" above its entrance. Parked vehicles along the left curb include a white high-roof Mercedes van closest to the starting position, followed by a silver sedan, dark gray SUV, silver minivan, and a white work van printed with colorful graphic designs further down the block. On the right, a raised paved median separates the travel lane from an adjacent road lined with parked cars in black, silver, and white; bare leafless trees stand behind the parked cars, and a distinctive curved gold-colored modern building with a wavy textured facade rises in the mid-distance, with a tall rectangular concrete high-rise visible behind it. A pedestrian in dark clothing walks on the far right sidewalk near the start of the segment. As the motorcycle travels forward, it passes the parked vehicles on the left sequentially, while a black sedan moves past on the right-side adjacent road.\n[3.5s-7.0s]: The motorcycle continues traveling straight down the center of the travel lane. Additional parked vehicles come into view and are passed on the left: a silver compact hatchback, a silver station wagon, and a dark gray SUV positioned near the upcoming intersection. Left-side storefronts become more legible as the motorcycle approaches, showing signs for \"Eri BikeShop\", \"COFFEE FIRST\", and \"HANA\", with bicycles parked outside the shop entrances. On the right, the raised median continues, lined with parked vehicles including a white flatbed utility truck, multiple white sedans, and a black Mini Cooper. A cyclist appears on the right sidewalk traveling in the same direction as the motorcycle, and a large curved glass-and-concrete high-rise building enters the frame along the right edge. Bright sunlight casts sharp, distinct shadows across the asphalt road surface.\n[7.0s-10.5s]: The motorcycle approaches a signalized intersection marked with wide white zebra crossing stripes across the road. A dark gray SUV pulls out from the left curb into the travel lane ahead, moving forward through the intersection approach. A blue circular traffic sign with a white right-pointing arrow becomes visible on the right side of the road near the crosswalk. The ornate corner building at the intersection, featuring a decorative turret roof and cream-colored facade with arched upper windows, comes into full view on the left. The cyclist on the right sidewalk rides across the crosswalk area. A dark-colored passenger car enters the intersection from the left cross street, moving across the motorcycle's path. The motorcycle continues forward toward the crosswalk, with the gold curved modern building remaining visible in the distance straight ahead, and the curved glass high-rise dominating the right side of the frame as the clip ends.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-004/camera_rear_left_70fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-2.5s]: The view is a wide, eye-level first-person perspective from a moving vehicle traveling forward along an urban asphalt road, with the partial side of a white car visible in the immediate left foreground throughout. A raised concrete traffic island sits in the near midground, holding two circular blue-bordered regulatory traffic signs mounted on metal poles, their reverse sides facing the camera. In the background, a large distinctive building dominates the right midground: its lower section is clad in horizontal brown panels with narrow horizontal windows, topped by a tall curved tower covered in a repeating golden-yellow and dark zigzag pattern. To the left of this landmark stands a rectangular light gray high-rise office building with a uniform grid of windows. Three tall vertical banners (purple, red, silver) stand in front of the landmark's base, alongside a bright pink digital billboard displaying unreadable text and graphics. Two white vans are parked near the landmark entrance, next to a rack of parked bicycles. Two pedestrians walk across the paved plaza in front of the landmark: one wears a red jacket and dark pants, the other wears a blue jacket and dark pants. On the left side of the road, a line of cars extends into the distance, including a white Renault van approaching in the oncoming lane; further left are multi-story brick and plaster residential/commercial buildings, a tree with yellow autumn foliage, and overhead tram wires strung across the clear pale blue sky. A black SUV enters from frame right, pulling toward the right curb, followed closely by a gray SUV. A person wearing a bright orange jacket, black pants, and dark shoes stands beside the black SUV as it stops, adjacent to the vehicle's open driver-side door.\n[2.5s-6.0s]: The vehicle continues moving forward, passing the initial traffic island which exits the frame. A continuous line of parked cars forms along the right curb, extending away from the viewer: after the black and gray SUVs, a silver SUV, silver compact hatchback, dark gray small hatchback, and white delivery van marked with green circular logos and partially legible green text come into view as they park sequentially. A solid red painted lane marking runs parallel to the right curb along the travel lane. A blue parking sign with a white \"P\" becomes visible above the treeline ahead. Bare, leafless deciduous trees line the sidewalk between the road and the landmark building, and patches of residual snow are visible on the paved plaza surface. Additional vehicles pass through the right travel lane moving away from the viewer, including a silver sedan, a white compact car with green side branding, and a white BMW sedan. The white Renault van remains in the oncoming left lane, approaching steadily. The golden zigzag tower and gray high-rise stay centered in the distant background under bright, low-angle sunlight that casts long shadows across the road.\n[6.0s-10.5s]: The vehicle continues forward, approaching a cobblestone-paved median separating the oncoming left lane from the right travel lanes. More parked cars line the right curb ahead, including a black station wagon. Two cyclists enter from frame right, riding bicycles along the right-side path: one wears a light-colored jacket and helmet, the other wears dark clothing. A red-and-white diagonally striped bollard stands at the edge of the right sidewalk near the parked cars. As the vehicle moves past the cobblestone median, another circular blue-bordered regulatory traffic sign comes into view on the left side of the road, followed by a red no-entry traffic sign further ahead on the right. White-striped pedestrian crosswalk markings appear on the asphalt in the near foreground. The large golden landmark building shifts slightly toward the center-right of the frame, while the row of older multi-story buildings on the left becomes more prominent, showing ground-floor storefronts and additional parked cars along the left curb. Bright, clear daylight persists, with sharp shadows cast across the road and sidewalks, and the sky remains cloudless and pale blue.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-004/camera_rear_right_70fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-2.5s]: The view is a first-person eye-level perspective from a moving vehicle traveling backward along a narrow urban street, with the front edge of a light-colored parked car visible along the far right edge of the frame for the full duration. Multi-story European-style buildings line both sides of the dark asphalt road, which has patches of slushy residual snow and ice along the curbs; warm late-afternoon sunlight casts long soft shadows across building facades under a clear pale blue sky, with overhead electric wires strung above the street. At the start, a white Mercedes-Benz high-roof van with yellow license plate sits in the left oncoming lane facing the camera, its headlights illuminated. A silver Mercedes-Benz sedan enters from the foreground left, travels toward the background right, and parks parallel to the left curb behind the van. Next, a dark gray SUV enters from the foreground left, travels toward the background right, and parks behind the silver sedan. As the camera moves backward, additional left-side storefronts come into view: a gray ground-floor facade with large glass windows, a lit round wall sconce, a potted evergreen plant in a black planter, and a small outdoor metal bench; further back, a red brick building with a black awning printed with \"FRIDAS\" (with a matching FRIDAS logo displayed below the awning) and an adjacent store with a window sign reading \"AMERICAN HAIR STYLE\". A pedestrian wearing a long tan coat walks along the left sidewalk away from the camera, and a cyclist rides a bicycle along the left sidewalk near the hair salon.\n[2.5s-5.5s]: The camera continues moving backward along the street. A silver Nissan SUV enters from the foreground left, travels toward the background right, and parks parallel to the left curb behind the dark gray SUV. Next, a white compact crossover enters from the foreground left, travels toward the background right, and parks behind the Nissan. Then a silver Ford Focus hatchback enters from the foreground left, travels toward the background right, and parks behind the white crossover. More left-side storefronts become visible as the camera moves: a white stone building marked with house number \"3-5\", a blue parking sign with a white \"P\", a small kiosk with pink signage, and a person seated on a wheeled mobility device on the sidewalk next to the kiosk. Bicycles are parked against the building facades along the left sidewalk, and a second white Mercedes-Benz van approaches in the distant right oncoming lane, its headlights illuminated.\n[5.5s-8.5s]: The camera continues moving backward, revealing more left-side businesses: a storefront with black text \"Fri BikeShop\" and bright red text \"URANIA\" on its upper facade, multiple bicycles parked outside its entrance, a yellow circular \"SALE\" sign in its display window, and a neighboring coffee shop with black text \"COFFEE FIRST\" on its facade, decorated with hanging German flags and outdoor seating with red chairs. A dark gray Toyota C-HR SUV enters from the foreground left, travels toward the background right, and parks parallel to the left curb behind the silver Ford. A man wearing a gray puffer jacket, dark pants, and dark shoes walks from the right side of the left sidewalk toward the street corner, passing the bike shop entrance.\n[8.5s-10.5s]: The camera reaches the street intersection, where a white painted bicycle symbol marks the asphalt approach to a crosswalk with wide white horizontal stripes. The corner building is an ornate cream-colored multi-story structure with curved bay windows, rough stone cladding on its ground floor, and red square signs with white \"HH\" logos mounted at each corner. A long row of parked bicycles lines the curb at the corner. A blue Volkswagen passenger car with a black hard-shell storage box mounted to its roof enters from the foreground left, travels across the intersection toward the background right, passing in front of the corner building. To the far left of the intersection, another multi-story building covered in metal scaffolding is visible, with a white van parked near its entrance. The man in the gray puffer jacket stops on the corner sidewalk near the parked bicycles, facing toward the intersection.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-004/camera_rear_tele_30fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-3.5s]: A wide, eye-level view captures a busy urban street in cool late-afternoon light, with the camera moving steadily backward down the road center. The asphalt road has visible wet patches and repair marks, particularly on the right side. In the center lane, a white Renault van with yellow license plate faces directly toward the viewer, headlights illuminated, driving slowly forward toward the foreground. On the left curb, a tall white Mercedes-Benz high-roof cargo van is parked; adjacent to it, a man in a brown jacket and dark pants stands beside a bicycle holding its handlebars, while groups of pedestrians walk along the sidewalk past multi-story buildings. These left-side buildings include a grey structure with a black awning bearing \"SHOES CENTER DK\" text, a red brick building, and a storefront with a green vertical sign marked with a white \"E\"; further back, a building displays a large colorful mural of a stylized figure, followed by older ornate red-brick buildings with decorative rooflines. On the right side of the road, multiple cars are parked along the curb including a white compact hatchback, with a line of slow-moving or queued traffic extending into the distance; two circular traffic signs (one blue-and-white directional marker, one plain white regulatory sign) stand on metal posts in the right foreground, next to a yellow rectangular warning sign further down the road. In the far background, a tall modern glass skyscraper rises, with a construction crane visible beside it, bare deciduous trees lit by warm golden sunlight sit near the skyscraper base, overhead tram wires strung with hanging bell-shaped lamps cross above the street, and a pale clear sky sits above the skyline. As the camera moves backward, more parked vehicles come into view along the left curb: a silver sedan, then a grey Nissan SUV, while a silver station wagon enters from the frame right, traveling away from the viewer down the right lane with its brake lights illuminated.\n[3.5s-7.5s]: The camera continues its steady backward movement, keeping the white Renault van centered as it approaches. Additional parked cars line the left curb: a silver Toyota SUV, a silver Ford hatchback, all facing toward the viewer. More left-side storefronts become visible, including a shop with a black \"FRI\" sign, outdoor seating with red chairs, and a blue parking sign marked with a white \"P\". Pedestrians continue walking along both sidewalks; a person in a dark jacket stands near parked cars on the right curb, and small groups of people gather near the distant intersection. The silver station wagon in the right lane continues driving away from the viewer, receding into the midground. Warm golden sunlight illuminates the facades of the left-side buildings and the bare trees on the right, casting soft long shadows across the road surface. The tall skyscraper and construction crane remain visible in the right background, and overhead tram wires stay in view against the pale sky.\n[7.5s-10.5s]: The camera maintains its backward motion, with the white Renault van remaining centered and continuing to approach the foreground. More left-side storefronts enter the frame: a corner store with a red and white \"HH\" logo sign, an adjacent \"Fri BikeShop\" sign, a \"COFFEE FIRST\" storefront, a red circular no-entry traffic sign mounted on a pole, and a second blue \"P\" parking sign. A grey Toyota C-HR SUV with yellow license plate is parked partially pulled out from the left curb, angled slightly toward the road center. Near the bike shop, a cyclist in dark clothing rides a bicycle along the sidewalk, and other pedestrians walk past storefronts; several bicycles are parked against the building facades. On the right side, more parked cars line the curb, and a white van drives away from the viewer down the right lane, following the earlier silver station wagon. The road surface shows worn, patched asphalt with damp areas, and the warm late-afternoon lighting persists, highlighting the textured facades of the older brick buildings on the left. The distant intersection remains visible at the end of the street, with queued traffic and pedestrians gathered near the crosswalk.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-004/camera_right_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-4.5s]: The view is a first-person perspective from a moving vehicle, captured with a wide fisheye lens that creates curved distortion at the frame edges and a dark circular vignette border; the white hood of the filming vehicle occupies the bottom foreground, with a black sticker bearing reversed white text \"TeamVehicle - Video\" affixed to its right side. The scene is an urban street intersection on a clear, sunny day, with bright natural light casting sharp shadows, and dark asphalt pavement marked by small red debris and patches of slushy residual snow along curbs and edges. Multi-story European-style buildings line the streets: a prominent red-brick building with white stone trim and arched ground-floor windows displays the sign \"FRIDAS\" above its storefront, adjacent to a beige multi-story building with rows of rectangular windows. A line of parked cars runs along the left curb, including a silver compact hatchback closest to the intersection, while a white van is parked further down the right curb. A sequence of vehicles travels across the intersection from frame-left to frame-right: first the silver compact hatchback drives past, followed by a bronze SUV, then a silver Mercedes-Benz sedan, then a silver Nissan SUV, then a silver Kia electric crossover, then a silver Ford hatchback, all passing in front of the filming vehicle as it approaches the intersection. Pedestrians walk along the sidewalk in front of the FRIDAS building, and bicycles are parked near the building entrances.\n[4.5s-8.0s]: The filming vehicle continues moving forward into the intersection, turning left so the background shifts to reveal additional corner storefronts on the red-brick building: legible signs read \"Fri BikeShop\", \"URANIA\", and \"COFFEE FIRST\", with more bicycles parked outside these shop entrances. A dark gray Toyota SUV enters from frame-left, driving across the intersection toward frame-right and kicking up slush and wet road spray from the damp pavement as it passes. A pedestrian wearing a blue jacket, dark pants, and white shoes walks across the far crosswalk from frame-left to frame-right. A modern multi-story building with a grid-patterned glass facade comes into view on the far left of the frame, displaying visible signage including \"FIREBOX\" and \"Vida\". The line of parked cars remains visible along the right curb.\n[8.0s-10.5s]: The filming vehicle completes its left turn, proceeding straight onto the new street. White painted bicycle lane symbols mark the asphalt ahead, and a zebra crossing with thick white horizontal stripes spans the road further in the distance. A blue compact car drives away from the intersection down the center of the street, while another blue car is parked on the left curb near the glass-fronted building. A white BMW i3 enters from frame-left, crossing in front of the filming vehicle as it moves over the zebra crossing. Ornate light-colored multi-story buildings with decorative facades line both sides of the street ahead, and a red truck is visible far down the road in the distance. The fisheye distortion, dark edge vignette, and visible white vehicle hood remain consistent through the end of the clip.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-005/camera_cross_left_120fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-3.5s]: The scene is a nighttime urban road intersection, viewed from a first-person forward-moving perspective at eye level in wide framing. The foreground consists of smooth dark asphalt marked with crisp white painted lane lines, including directional turn arrows and crosswalk markings. A grassy median runs horizontally across the midground, lined with evenly spaced tall leafless deciduous trees whose bare branches are lit by warm yellow overhead streetlights; dry brown fallen leaves cover the ground at the base of each tree. Behind the median stand multi-story residential apartment buildings, with numerous windows glowing with warm interior light against the pitch-black night sky. Tall silver metal streetlight poles rise above the treeline, casting soft hazy glows in the dark air. On the far right edge of the frame, a traffic signal mounted on a horizontal arm extends over the road, and additional streetlights recede into the distance along the right-hand roadway. As the camera moves steadily forward, the leftmost trees gradually shift toward the left edge of the frame, and more of the right-side streetscape comes into view.\n[3.5s-7.5s]: The camera continues moving forward toward the intersection. The row of leafless trees on the median shifts further left, revealing a distinctive angular gabled building with pale green exterior walls and vertical red brick accent strips; a large billboard featuring an image of a person is mounted on its side wall facing the road. Orange construction barriers and stacked building materials sit at the base of this building, adjacent to a parked light-colored work van. Additional traffic infrastructure becomes visible: multiple traffic signal heads displaying illuminated red lights, blue circular regulatory signs with white directional arrows, and white rectangular informational signs mounted on metal poles at the intersection corners. A white two-story commercial building with a dark sloped roof and black-and-white mural artwork on its end wall comes into clear view to the right of the gabled building, with lit ground-floor storefronts. Distant oncoming vehicle headlights appear as small bright points far down the straight right-hand road. The asphalt road surface remains marked with white dashed lane dividers and curved turn guidance lines.\n[7.5s-10.6s]: The camera advances past the closest traffic signal pole, which exits the left edge of the frame. A line of passenger cars approaches from the distance on the right-hand road, their bright white headlights creating slight glare on the smooth road surface. A white compact hatchback enters the intersection from the right, traveling left across the travel lanes in front of the viewpoint. A pedestrian wearing a teal jacket and dark pants walks along the sidewalk adjacent to the white commercial building, moving toward the crosswalk. More traffic signals come into view on the right, including one displaying an illuminated green light for through traffic, alongside additional blue directional arrow signs and street name signs mounted on curved metal arms over the road. The gabled building, parked work van, and orange construction barriers remain visible on the left side of the intersection, while the dark night sky fills the upper portion of the frame, lit only by the diffused glow of streetlights and building illumination.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-005/camera_cross_right_120fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-1.5s]: The scene is a nighttime urban street corner, captured from a first-person eye-level perspective as the camera moves forward along the road. In the right foreground, a curved rough-textured gray concrete planter holds a large leafless deciduous tree with pale bare branches; dry brown leaves are scattered on the adjacent light gray concrete sidewalk at the planter's base. A tall gray metal sign pole stands on the sidewalk immediately left of the planter, supporting two signs: an upper white directional parking sign with blue square markers labeled P1, P2, P3, P4, P5-P7 alongside partially legible German text, and a lower white rectangular no-stopping sign marked with a black crossed-out \"P\" symbol. Behind the planter sits a two-story off-white residential building with dark window frames, some windows emitting warm interior light. Further back in the midground, a yellow single-story commercial building with a dark sloped roof displays partially legible gold text reading \"St. Gertraud\" across its front facade. To the left, a traffic signal mounted on a horizontal arm glows green, positioned next to a tall dense evergreen tree behind a low concrete wall that runs parallel to the sidewalk. White dashed lane markings mark the asphalt road in the left foreground, and the dark night sky fills the upper portion of the frame, with artificial lighting creating soft lens flares.\n[1.5s-4.5s]: The camera continues moving forward, passing the initial sign pole and concrete planter which exit the right edge of the frame. The yellow St. Gertraud building becomes more centrally visible, fronted by a long white temporary construction barrier running along the sidewalk. The traffic signal assembly shifts toward the left side of the frame, revealing its full structure: multiple signal heads (one glowing green for through traffic), pedestrian crossing signals, and small attached regulatory signs. The low concrete wall on the left grows closer, showing faint faded graffiti on its weathered surface, with the tall evergreen tree rising above it. As the camera progresses, the yellow building recedes into the background, and a continuous tall rough-textured gray concrete retaining wall comes into view along the right sidewalk, with the sloped roofs of residential buildings peeking over its top edge.\n[4.5s-7.5s]: The camera moves forward along the stretch of road bordered by the tall concrete retaining wall on the right, which bears faint light-colored graffiti marks across its surface. The asphalt road on the left features a red-painted dedicated bicycle lane marked with a white bicycle symbol, separated from the main travel lane by white dashed lines. Tall streetlights cast bright warm white light over the intersection ahead, producing prominent lens flares against the dark sky. Dense green shrubs and trees line the far side of the retaining wall, with additional residential rooftops visible above the wall. As the camera approaches the intersection, a second traffic signal pole comes into view on the right sidewalk, displaying an illuminated red pedestrian don't-walk signal alongside a lit green vehicle traffic light.\n[7.5s-10.5s]: The camera enters the intersection, where a dark blue compact car waits at the cross street on the left, facing right with its headlights activated. On the left side of the intersection stands a multi-story modern off-white apartment building with numerous rectangular windows, several of which glow with warm interior light; smaller traffic signals near the building display a lit yellow left-turn arrow and a lit green straight-ahead signal. Leafy green deciduous trees and neatly trimmed hedges line the sidewalks around the intersection, and a white roadside sign with legible text \"REISSER\" stands on the right sidewalk near the curb. The road curves gently uphill into the distance, lined with additional streetlights and multi-story buildings, and a second vehicle with bright illuminated headlights approaches from the far end of the curving road. The camera continues forward through the intersection, with the waiting blue car remaining stationary at the cross street as the clip ends.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-005/camera_front_fisheye_200fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-3.5s]: The view is a first-person forward-facing perspective from a moving vehicle, captured with a fisheye lens that creates curved distortion at the frame edges; the lower edge of the frame shows the dark curved hood and light-colored front bumper trim of the vehicle. The scene takes place at night on a multi-lane asphalt urban road, illuminated by warm yellow overhead streetlights against a pitch-black sky. At the start, the vehicle is positioned at a thick white transverse stop line, with white lane markings dividing the road: the occupied center lane displays a large painted white arrow indicating both straight travel and left turns, while adjacent lanes show additional directional arrows including a left-turn arrow in the leftmost visible lane. Overhead traffic lights mounted on horizontal poles spanning the road are lit green. On the right roadside, a concrete sidewalk runs parallel to the road, bordered by a low concrete barrier, with tall metal streetlight poles holding rectangular backlit signs (text not legible) and leafless deciduous trees further back. On the left roadside, more leafless trees, lit streetlights, and distant buildings with small glowing windows line the route. Far down the straight road, clusters of bright headlights from distant vehicles are visible. As the vehicle moves forward, it crosses the initial stop line, passes over the first painted lane arrow, and approaches the first signalized intersection; the closest overhead traffic light pole grows larger in the frame before passing out of view above and to the right.\n[3.5s-7.0s]: The vehicle continues traveling straight through the first green-lit intersection. The right roadside transitions to a tall, smooth gray concrete retaining wall running alongside the road, while the left roadside reveals low-rise residential buildings with sloped roofs, some with exterior lighting and lit interior windows. Additional sets of green traffic lights are visible further ahead along the road's path. White dashed lane dividers mark the travel lanes, and a second set of thick white transverse crosswalk lines comes into view as the vehicle approaches the next intersection. A dedicated red-paved bicycle lane marked with white edge lines becomes visible along the right side of the road, separated from the main travel lanes by a solid white line. Streetlights continue to cast even warm light across the road surface, and distant vehicle headlights remain visible far ahead.\n[7.0s-10.5s]: The vehicle proceeds straight through the second green-lit intersection, crossing the second set of white crosswalk lines. The right roadside now features multi-story modern light-colored apartment buildings with multiple illuminated windows, parked cars along the curb adjacent to the red bike lane, and additional streetlights and traffic signal poles. The left roadside shows more low-rise buildings, including one with a large dark graphic mural on its white gable end, and a blue circular regulatory traffic sign mounted on a pole near the intersection corner. A queue of passenger cars with illuminated headlights waits at the intersecting cross street on the left, stopped for their red traffic signal. As the vehicle moves past the intersection, a white compact car becomes visible waiting at the left cross street, and additional oncoming vehicle headlights are visible further down the continuing straight road. The fisheye lens distortion remains consistent throughout, with no cuts or changes to the forward-facing driving perspective.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}

captions/scene-005/camera_front_tele_30fov.json

@@ -0,0 +1,9 @@
+{
+  "caption_structured": {
+    "chunk_0_300": {
+      "caption": "[0.0s-8.5s]: The scene is a nighttime urban intersection, viewed from a first-person eye-level perspective in a moving vehicle traveling forward along the road. A blue and silver public transit bus with illuminated red taillights and a yellow digital route display on its rear occupies the center lane directly ahead, driving straight through the intersection. Traffic signals facing the camera are green: a large overhead traffic light centered above the travel lanes glows green, a traffic light mounted on a pole to the right of the road glows green alongside an illuminated green pedestrian walk signal, and additional green traffic lights are visible further down the road. To the left of the center lane, multiple oncoming passenger cars with bright white headlights activated wait at a red traffic light; this left-side traffic light displays an illuminated red left-turn arrow, with smaller red pedestrian signals lit below it. The asphalt road surface has clear white painted markings: a left-turn arrow in the leftmost lane, a combined straight-ahead and right-turn arrow in the center lane, a bicycle symbol marking the dedicated bike lane to the right, and white stop lines at the intersection threshold. On the left roadside, low-rise commercial buildings line the street, including one with a legible \"ALDI\" store sign, tall illuminated streetlights, a blue circular mandatory right-turn sign, and other regulatory traffic signs. On the right roadside, a multi-story residential building with several lit windows stands behind a concrete retaining wall, next to a yellow diamond-shaped priority road sign, dense dark trees, and a paved sidewalk. The sky is fully dark, with all illumination coming from artificial sources: streetlights cast warm white light, traffic lights cast distinct green and red hues, and car headlights create bright glare. As the vehicle moves forward through the intersection, the closest foreground traffic signs and poles gradually exit the frame edges, and the bus maintains its position ahead in the center lane.\n[8.5s-10.6s]: The overhead traffic lights change from green to yellow, remaining illuminated yellow as the vehicle continues following the bus forward past the intersection. The bus stays centered in the travel lane, its rear route display now showing partially legible text including \"G\u00d6TTINGEN\". The oncoming cars on the left remain stopped at their red light, with their headlights still active. New roadside signs come into view on the right as the vehicle progresses: a white directional sign with black text reading \"Flugfeld\", a blue circular bicycle sign, a blue circular pedestrian sign depicting an adult holding a child's hand, and a triangular yield sign. The red-paved dedicated bike lane continues along the right edge of the road, bordered by a concrete curb adjacent to the sidewalk lined with dense bushes and trees. Streetlights continue to illuminate the roadway, the dark night sky remains visible above, and the vehicle maintains steady forward motion behind the bus through the end of the clip.",
+      "start_frame": 0,
+      "end_frame": 300
+    }
+  }
+}