GET

/v1/schemas/fal/video/fal-ai/ltx-2.3/image-to-video

kind inputactivity videohash 4730821a…extracted Oct 9, 2026version currentsource upstream spec ↗
fieldrecorded source
schemaSource linked above.

upstream-spec

Source trace
16a6d0856dde747f924903de291f5c0eed6ff97b0535b45c06dd40ef645f6c8f
{
  "fetchedAt": 1791522002,
  "extractorVersion": "1",
  "verifiedAt": null
}

Request body

9 properties · 2 required · 0 $defs
propertytypedescriptionconstraints
image_url*stringThe URL of the start image to use for the generated video.
prompt*stringThe prompt to use for the generated videolength ≥ 1 · length ≤ 5000
enable_safety_checkerbooleanAuthorized callers may set false to request relaxed screening.default: true
fpsenumThe frames per second of the generated video24 | 25 | 48 | 50 · default: 25
resolutionenumThe resolution of the generated video1080p | 1440p | 2160p · default: "1080p"
aspect_ratioenumThe aspect ratio of the generated video. If 'auto', the aspect ratio will be determined automatically based on the input image.auto | 16:9 | 9:16 · default: "auto"
end_image_urlstringThe URL of the end image to use for the generated video. When provided, generates a transition video between start and end frames.nullable
durationenumThe duration of the generated video in seconds6 | 8 | 10 · default: 6
generate_audiobooleanWhether to generate audio for the generated videodefault: true

Validate a payload

before you spend tokens
shell
$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"fal-ai/ltx-2.3/image-to-video","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}