GET

/v1/schemas/fal/video/fal-ai/sync-lipsync/react-1

Accept:

kind inputactivity videohash c48c6ee5…extracted Oct 22, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. upstream-spec Source trace `6a213e663e3d563e07120b195dac81cc91b38889436cdb7d097d88124bc6e666` { "fetchedAt": 1792645225, "extractorVersion": "1", "verifiedAt": null }

Request body

7 properties · 3 required · 0 $defs

property	type	description	constraints
audio_url*	string	URL to the input audio. Must be 15 seconds or shorter.
emotion*	enum	Emotion prompt for the generation. Currently supports single-word emotions only.	happy \| sad \| angry \| disgusted \| surprised \| neutral
video_url*	string	URL to the input video. Must be 15 seconds or shorter.
temperature	number	Controls the expresiveness of the lipsync.	0 ≤ n ≤ 1 · default: 0.5
lipsync_mode	enum	Lipsync mode when audio and video durations are out of sync.	cut_off \| loop \| bounce \| silence \| remap · default: "bounce"
enable_safety_checker	boolean		default: true
model_mode	enum	Controls the edit region and movement scope for the model. Available options: - `lips`: Only lipsync using react-1 (minimal facial changes). - `face`: Lipsync + facial expressions without head movements. - `head`: Lipsync + facial expressions + natural talking…	lips \| face \| head · default: "face"

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"fal-ai/sync-lipsync/react-1","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}