cowork-os HyperFrames CLI
Everything runs through npx hyperframes. Requires Node.js >= 22 and FFmpeg.
Workflow
- Scaffold —
npx hyperframes init my-video - Write — author HTML composition (see the
hyperframesskill) - Lint —
npx hyperframes lint - Preview —
npx hyperframes preview - Render —
npx hyperframes render
Lint before preview — catches missing data-composition-id, overlapping tracks, unregistered timelines.
Scaffolding
npx hyperframes init my-video # interactive wizard
npx hyperframes init my-video --example warm-grain # pick an example
npx hyperframes init my-video --video clip.mp4 # with video file
npx hyperframes init my-video --audio track.mp3 # with audio file
npx hyperframes init my-video --non-interactive # skip prompts (CI/agents)
Templates: blank, warm-grain, play-mode, swiss-grid, vignelli, decision-tree, kinetic-type, product-promo, nyt-graph.
init creates the right file structure, copies media, transcribes audio with Whisper, and installs AI coding skills. Use it instead of creating files by hand.
Linting
npx hyperframes lint # current directory
npx hyperframes lint ./my-project # specific project
npx hyperframes lint --verbose # info-level findings
npx hyperframes lint --json # machine-readable
Lints index.html and all files in compositions/. Reports errors (must fix), warnings (should fix), and info (with --verbose).
Previewing
npx hyperframes preview # serve current directory
npx hyperframes preview --port 4567 # custom port (default 3002)
Hot-reloads on file changes. Opens the studio in your browser automatically.
Rendering
npx hyperframes render # standard MP4
npx hyperframes render --output final.mp4 # named output
npx hyperframes render --quality draft # fast iteration
npx hyperframes render --fps 60 --quality high # final delivery
npx hyperframes render --format webm # transparent WebM
npx hyperframes render --docker # byte-identical
| Flag | Options | Default | Notes |
|---|---|---|---|
--output |
path | renders/name_timestamp.mp4 | Output path |
--fps |
24, 30, 60 | 30 | 60fps doubles render time |
--quality |
draft, standard, high | standard | draft for iterating |
--format |
mp4, webm | mp4 | WebM supports transparency |
--workers |
1-8 or auto | auto | Each spawns Chrome |
--docker |
flag | off | Reproducible output |
--gpu |
flag | off | GPU-accelerated encoding |
--strict |
flag | off | Fail on lint errors |
--strict-all |
flag | off | Fail on errors AND warnings |
Quality guidance: draft while iterating, standard for review, high for final delivery.
Transcription
npx hyperframes transcribe audio.mp3
npx hyperframes transcribe video.mp4 --model medium.en --language en
npx hyperframes transcribe subtitles.srt # import existing
npx hyperframes transcribe subtitles.vtt
npx hyperframes transcribe openai-response.json
Text-to-Speech
npx hyperframes tts "Text here" --voice af_nova --output narration.wav
npx hyperframes tts script.txt --voice bf_emma
npx hyperframes tts --list # show all voices
Troubleshooting
npx hyperframes doctor # check environment (Chrome, FFmpeg, Node, memory)
npx hyperframes browser # manage bundled Chrome
npx hyperframes info # version and environment details
npx hyperframes upgrade # check for updates
Run doctor first if rendering fails. Common issues: missing FFmpeg, missing Chrome, low memory.
Other
npx hyperframes compositions # list compositions in project
npx hyperframes docs # open documentation
npx hyperframes benchmark . # benchmark render performance