GET

/v1/schemas/fal/video/minimax/h3-max/extend-video?kind=output

Accept:

kind outputactivity videohash 42e3a071…extracted Oct 7, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. upstream-spec Source trace `1a3720a8966d57a2fa7a2b67508392bedb566cb5541be9ad977c9aebaf2dcf85` { "fetchedAt": 1791349310, "extractorVersion": "1", "verifiedAt": null }

Response body

6 properties · 4 required · 1 $defs

property	type	description	constraints
duration*	number	Seconds of returned video.
source*	object	Source video information: width, height, frame rate, duration, and audio.
seed*	integer	Seed used for the continuation.
video*	File	The returned video. In 'continuation' mode, it includes the 1.625-second repeat at the start.
timings	object
expanded_prompt	string	The prompt used after expansion, or null when unchanged.	nullable

Types

1 $defs

Fileobject

file_size	integer	The size of the file in bytes.	nullable
content_type	string	The mime type of the file.	nullable
url*	string	The URL where the file can be downloaded from.
file_name	string	The name of the file. It will be auto-generated if not provided.	nullable

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"minimax/h3-max/extend-video","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}