GET

/v1/schemas/fal/video/fal-ai/ltx-2/image-to-video/fast

Accept:

kind inputactivity videohash cf986a69…extracted Jul 6, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. Source trace `6c330a8b015a4fcd7b676bd2c70d11f59f2704fd9832bc0dbe2145cc7319d124` { "fetchedAt": 1783329487, "extractorVersion": "1", "verifiedAt": null }

Request body

6 properties · 2 required · 0 $defs

property	type	description	constraints
image_url*	string	URL of the image to generate the video from. Must be publicly accessible or base64 data URI. Supports PNG, JPEG, WebP, AVIF, and HEIF formats.
prompt*	string	The prompt to generate the video from	length ≥ 1 · length ≤ 5000
generate_audio	boolean	Whether to generate audio for the generated video	default: true
fps	enum	The frames per second of the generated video	25 \| 50 · default: 25
resolution	enum	The resolution of the generated video	1080p \| 1440p \| 2160p · default: "1080p"
duration	enum	The duration of the generated video in seconds. The fast model supports 6-20 seconds. Note: Durations longer than 10 seconds (12, 14, 16, 18, 20) are only supported with 25 FPS and 1080p resolution.	6 \| 8 \| 10 \| 12 \| 14 \| 16 · +2 more · default: 6

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"fal-ai/ltx-2/image-to-video/fast","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}