GET
/v1/schemas/fal/video/fal-ai/ltx-2.3/image-to-video/fast
Accept:
| field | recorded source |
|---|---|
| schema | Source linked above. upstream-spec Source trace810140f85384f4712de1ffea0df0a08c31611ddf9abf997f0fc28613249e01d5{
"fetchedAt": 1791522002,
"extractorVersion": "1",
"verifiedAt": null
} |
Request body
9 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 |
| enable_safety_checker | boolean | Authorized callers may set false to request relaxed screening. | default: true |
| fps | enum | The frames per second of the generated video | 24 | 25 | 48 | 50 · default: 25 |
| resolution | enum | The resolution of the generated video | 1080p | 1440p | 2160p · default: "1080p" |
| aspect_ratio | enum | The aspect ratio of the generated video | auto | 16:9 | 9:16 · default: "auto" |
| end_image_url | string | The URL of the end image to use for the generated video. When provided, generates a transition video between start and end frames. | nullable |
| 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 |
| generate_audio | boolean | Whether to generate audio for the generated video | default: true |
Validate a payload
before you spend tokensshell
$ curl -X POST https://modelschemas.com/v1/validate \
-d '{"provider":"fal","endpointId":"fal-ai/ltx-2.3/image-to-video/fast","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}