| # Generated media manifest | |
| `helixbench prepare --generated` accepts JSONL with exactly the frozen 1,015 IDs. Each row gives an absolute MP4 path and its SHA256: | |
| ```json | |
| {"sample_id":"YB0006_Indoor_navigation_0en_ZwGyokU","path":"/absolute/generated/YB0006_Indoor_navigation_0en_ZwGyokU.mp4","sha256":"<64 hex digits>"} | |
| ``` | |
| The packaged reference features supply GT for KL/FAD. Optionally pass `--gt` with the same JSONL shape to recompute GT features from exact GT MP4s. The frozen `caption_av`, event/perspective subsets, and first-frame SHA are read from the package. | |