GET

/v1/schemas/fal/video/lightricks/ltx-2.5/image-to-video/fast

kind inputactivity videohash 91c28634…extracted Aug 23, 2026version currentsource upstream spec ↗
fieldrecorded source
schemaSource linked above.

upstream-spec

Source trace
c91bf9372687bb06569ccfa25203938df37abd2f5163f5921f3772297894fca4
{
  "fetchedAt": 1787461219,
  "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
fpsenumThe frames per second of the generated video.24 | 25 | 48 | 50 · default: 25
camera_motionenumOptional camera motion applied to the generated video.dolly_in | dolly_out | dolly_left | dolly_right | jib_up | jib_down · +2 more · nullable
resolutionenumThe resolution of the generated video.720p | 1080p | 1440p | 2160p · default: "1080p"
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 seconds. At 720p and 1080p, 24 or 25 FPS supports up to 20 seconds, while 48 or 50 FPS supports up to 10 seconds. At 1440p and 2160p, all frame rates support up to 10 seconds. Set to 'auto' to let the model choose the dur…6 | 8 | 10 | 12 | 14 | 16 · +3 more · default: "auto"
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"
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":"lightricks/ltx-2.5/image-to-video/fast","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}