GET

/v1/schemas/fal/video/fal-ai/pixverse/v4/text-to-video

kind inputactivity videohash 71c4d24e…extracted Oct 9, 2026version currentsource upstream spec ↗
fieldrecorded source
schemaSource linked above.

upstream-spec

Source trace
248f057ce24a01001379a8ee48eaac9acee2ed61958e13516008c4f2313d84bd
{
  "fetchedAt": 1791522002,
  "extractorVersion": "1",
  "verifiedAt": null
}

Request body

8 properties · 1 required · 0 $defs
propertytypedescriptionconstraints
prompt*stringText prompt for the video generation. Limited to 2048 UTF-8 encoded bytes. Because the limit counts bytes rather than characters, emoji and non-Latin or accented characters (which use multiple bytes each) can push a visually short prompt over the cap.
aspect_ratioenumThe aspect ratio of the generated video16:9 | 4:3 | 1:1 | 3:4 | 9:16 · default: "16:9"
negative_promptstringNegative prompt to be used for the generation. Limited to 2048 UTF-8 encoded bytes. Because the limit counts bytes rather than characters, emoji and non-Latin or accented characters (which use multiple bytes each) can push a visually short prompt over the cap.default: ""
styleenumThe style of the generated videoanime | 3d_animation | clay | comic | cyberpunk · nullable
enable_safety_checkerbooleanAuthorized callers may set false to request relaxed screening.default: true
durationenumThe duration of the generated video in seconds. 8s videos cost double. 1080p videos are limited to 5 seconds5 | 8 · default: "5"
resolutionenumThe resolution of the generated video360p | 540p | 720p | 1080p · default: "720p"
seedinteger The same seed and the same prompt given to the same version of the model will output the same video every time. nullable

Validate a payload

before you spend tokens
shell
$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"fal-ai/pixverse/v4/text-to-video","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}