scans/task_board/converted/README.md

Converted Robotics Dataset

This dataset stores authoritative timestamps and metadata in Parquet tables and stores frame payloads in video containers. Video presentation timestamps are not used for synchronization; use tables/frames.parquet and video_frame_idx.

Core loading rule:

decoded video frame k == frames.parquet row where video_frame_idx == k

Useful files:

• dataset_manifest.parquet: converted sessions in this dataset root
• sessions/<session_id>/metadata/streams.parquet: stream IDs and modalities
• sessions/<session_id>/metadata/videos.parquet: stream-to-video mapping
• sessions/<session_id>/tables/frames.parquet: authoritative timestamps, frame indices, clock domains, and hashes
• sessions/<session_id>/tables/robot_states.parquet: robot states, if present
• sessions/<session_id>/metadata/calibration.json: calibration and transform conventions
• sessions/<session_id>/metadata/validation_report.json: validation status

Downstream reading requires Python, NumPy, PyArrow, and PyAV/FFmpeg-compatible decoders. Camera SDKs are conversion-only dependencies.