GET

/v1/schemas/fal/video/fal-ai/ffmpeg-api/compose

Accept:

kind inputactivity videohash c536adf6…extracted Oct 14, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. upstream-spec Source trace `1d39acf8644e4f13b4cdd205845707e2088264489398027af074c75d4e497b80` { "fetchedAt": 1791954060, "extractorVersion": "1", "verifiedAt": null }

Request body

1 properties · 1 required · 2 $defs

property	type	description	constraints
tracks*	Track[]	List of tracks to be combined into the final media. Exactly one visual track (video or image) is required; any number of audio tracks may be included.

Types

2 $defs

Keyframeobject

timestamp*	number	The timestamp in milliseconds where this keyframe starts
duration*	number	The duration in milliseconds of this keyframe
url*	string	The URL where this keyframe's media file can be accessed

Trackobject

id*	string	Unique identifier for the track
type*	string	Type of track ('video', 'audio', or 'image')
keyframes*	Keyframe[]	List of keyframes that make up this track

Validate a payload

before you spend tokens

shell

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