GET

/v1/schemas/fal/audio/fal-ai%2Fffmpeg-api%2Fmerge-audios

Accept:

kind inputactivity audiohash 29e40eda…extracted Jul 6, 2026version currentsource upstream spec ↗

Request body

2 properties · 1 required · 0 $defs

property	type	description	constraints
audio_urls*	string[]	List of audio URLs to merge in order. The 0th stream of the audio will be considered as the merge candidate.	items ≥ 2 · items ≤ 5
output_format	enum	Output format of the combined audio. If not used, will be determined automatically using FFMPEG. Formatted as codec_sample_rate_bitrate.	mp3_22050_32 \| mp3_44100_32 \| mp3_44100_64 \| mp3_44100_96 \| mp3_44100_128 \| mp3_44100_192 · +13 more · nullable

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-audios","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}