HyperFrames Media
CLI commands that create assets (tts, bgm, transcribe, remove-background), plus everything needed to consume and animate transcript data in HTML. For placing assets into compositions, see hyperframes-core.
Provider chains (auto-detected from env)
TTS — npx hyperframes tts "..." picks the first available provider:
| Order | Provider | Detected when | Word timestamps |
|---|---|---|---|
| 1 | HeyGen (Starfish) | $HEYGEN_API_KEY / hyperframes auth login | Yes, native — pass --words narration.words.json to capture |
| 2 | ElevenLabs | $ELEVENLABS_API_KEY set | No — chain transcribe after |
| 3 | Kokoro-82M (local, 54 voices) | always (no key required) | No — chain transcribe after |
If the installed
hyperframes ttsis the local-only build (its--helpsays "Kokoro-82M" and has no--provider/--wordsflags), it silently falls back to Kokoro even with$HEYGEN_API_KEYset. To force HeyGen regardless of CLI version, use the self-containedscripts/heygen-tts.mjs(seereferences/tts.md).
BGM — npx hyperframes bgm --duration N:
| Order | Provider | Detected when |
|---|---|---|
| 1 | Google Lyria (RealTime) | $GEMINI_API_KEY or $GOOGLE_API_KEY set |
| 2 | MusicGen (facebook/musicgen-small, local) | Python transformers + torch + soundfile installed |
Override either with --provider <name>.
Routing
| Task | Read |
|---|---|
npx hyperframes tts — provider chain, voice IDs, words.json | references/tts.md |
| HeyGen without the CLI — self-contained REST script (wav + words) | scripts/heygen-tts.mjs (see references/tts.md) |
npx hyperframes bgm — Lyria vs MusicGen, mood prompts, tuning | references/bgm.md |
npx hyperframes transcribe — Whisper, model rules, output shape | references/transcribe.md |
npx hyperframes remove-background — transparent cutouts | references/remove-background.md |
| TTS → transcription → captions (no recorded voiceover) | references/tts-to-captions.md |
| Caption authoring — style detection, layout, word grouping, exit | references/captions/authoring.md |
| Transcript handling — input formats, quality gates, cleanup, APIs | references/captions/transcript-handling.md |
| Caption motion — karaoke, marker effects, audio-reactive | references/captions/motion.md |
| Model caches, system dependencies, troubleshooting | references/requirements.md |
Non-negotiable rules
- Voice IDs are provider-specific.
am_michaelis Kokoro-only; HeyGen UUIDs don't work on Kokoro. If you pass--voice, also pin--providerto avoid silent provider drift when the user's env changes. - Always pass
--modeltotranscribe. The CLI defaultsmall.ensilently translates non-English audio. Seereferences/transcribe.md→ "Language Rule". - HeyGen returns word timestamps; ElevenLabs / Kokoro do not. When you want captions, either pass
--wordsto HeyGen and use that JSON directly, or runtranscribeagainst the audio file. Don't assume word data is always there. - Captions consume the flat word-array format with
{ id, text, start, end }. Seereferences/transcribe.md→ "Output Shape". remove-background --background-outputis hole-cut, not inpainted. For "scene without the person", a different tool is needed. Seereferences/remove-background.md→ "When NOT the right tool".