GET

/v1/schemas/fal/video/fal-ai/pixverse/extend/fast

Accept:

kind inputactivity videohash 6d628c03…extracted Jul 6, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. Source trace `c7045dd2de9981bc88be732eee86de39de0d9aa534032d88b97368293fc09797` { "fetchedAt": 1783331098, "extractorVersion": "1", "verifiedAt": null }

Request body

8 properties · 2 required · 0 $defs

property	type	description	constraints
video_url*	string	URL of the input video to extend
prompt*	string	Prompt describing how to extend the video
style	enum	The style of the extended video	anime \| 3d_animation \| clay \| comic \| cyberpunk · nullable
seed	integer	Random seed for generation	nullable
negative_prompt	string	Negative prompt to be used for the generation	default: ""
model	enum	The model version to use for generation	v3.5 \| v4 \| v4.5 \| v5 \| v5.5 \| v5.6 · +1 more · default: "v4.5"
resolution	enum	The resolution of the generated video. Fast mode doesn't support 1080p	360p \| 540p \| 720p · default: "720p"
generate_audio_switch	boolean	Enable audio generation (BGM, SFX, dialogue). Supported in v5.6+ models.	default: false

Validate a payload

before you spend tokens

shell

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