# SparseVideoNav Privacy-Processed Videos

This directory supplements the the `frames/bvn/` and `frames/ifn/` releases with episode-level MP4 files.

- All videos are privacy processed for face and license-plate blurring.
- All released MP4 files are H.264 at 256×256 resolution.
- The prepared source collection mixes videos derived from privacy-processed raw recordings with fallback videos reconstructed from processed 256×256 RGB frames.
- Per-video raw-versus-fallback provenance was not retained by the prepared source collection.
- Two missing public episodes were reconstructed from their processed RGB frames while aligning this release.
- Revisit episodes are intentionally excluded.

## Layout

```text
videos/
├── README.md
├── manifest.json
├── bvn/
│   ├── metadata.jsonl
│   └── <episode_id>.mp4
└── ifn/
    ├── metadata.jsonl
    └── <episode_id>.mp4
```

Each `episode_id` matches the corresponding record in `frames/bvn/annotations.json` or `frames/ifn/annotations.json`.

## Summary

| Subset | Episodes | Duration | Bytes |
| --- | ---: | ---: | ---: |
| BVN | 5,433 | 57.35 h | 5,944,679,509 |
| IFN | 6,260 | 64.40 h | 6,953,487,944 |
| Total | 11,693 | 121.74 h | 12,898,167,453 |