GET

/v1/schemas/fal/video/fal-ai/ffmpeg-api/merge-audio-video

kind inputactivity videohash de1ee144…extracted Jul 6, 2026version currentsource upstream spec ↗
fieldrecorded source
schemaSource linked above.
Source trace
6767b1387b8f0986ddcb9e65c1e0f119312ddc6cd283334344cbbf541a8f19b5
{
  "fetchedAt": 1783329487,
  "extractorVersion": "1",
  "verifiedAt": null
}

Request body

3 properties · 2 required · 0 $defs
propertytypedescriptionconstraints
audio_url*stringURL of the audio file to use as the audio track
video_url*stringURL of the video file to use as the video track
start_offsetnumberOffset in seconds for when the audio should start relative to the videon ≥ 0 · default: 0

Validate a payload

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