15 lines
802 B
Markdown
15 lines
802 B
Markdown
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# Generate a project beat grid
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Use `hyperframes beats` when an existing HyperFrames project needs the Studio-compatible beat file for its music track. This is a CLI utility, not a complete video workflow.
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```bash
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npx hyperframes beats
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npx hyperframes beats ./my-video
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npx hyperframes beats ./my-video --json
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```
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The project must contain a local music `<audio>` source. Mark it with `data-timeline-role="music"`; an id containing `music`, `bgm`, or `soundtrack` is also recognized. The command decodes that file with ffmpeg, tracks its beats, and writes `beats/<audio-relative-path>.json`.
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If the track has no steady beat, the command fails and writes nothing. If ffmpeg is missing, run `npx hyperframes doctor`.
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For a whole video cut to a music track, see `/hyperframes` → `references/film.md`.
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