GET
/v1/schemas/fal/video/fal-ai/veo3.1/fast/extend-video
Accept:
| field | recorded source |
|---|---|
| schema | Source linked above.Source tracedef454b93789b6b6e5e2e8964a8e243f21d4bbb7410f845eb3dd54929a8f64a5{
"fetchedAt": 1783329487,
"extractorVersion": "1",
"verifiedAt": null
} |
Request body
10 properties · 2 required · 0 $defs| property | type | description | constraints |
|---|---|---|---|
| video_url* | string | URL of the video to extend. The video should be 720p or 1080p resolution in 16:9 or 9:16 aspect ratio. | |
| prompt* | string | The text prompt describing how the video should be extended | length ≤ 20000 |
| aspect_ratio | enum | The aspect ratio of the generated video. | auto | 16:9 | 9:16 · default: "auto" |
| duration | const | The duration of the generated video. | "7s" · default: "7s" |
| auto_fix | boolean | Whether to automatically attempt to fix prompts that fail content policy or other validation checks by rewriting them. | default: false |
| seed | integer | The seed for the random number generator. | nullable |
| negative_prompt | string | A negative prompt to guide the video generation. | nullable |
| resolution | const | The resolution of the generated video. | "720p" · default: "720p" |
| generate_audio | boolean | Whether to generate audio for the video. | default: true |
| safety_tolerance | enum | The safety tolerance level for content moderation. 1 is the most strict (blocks most content), 6 is the least strict. | 1 | 2 | 3 | 4 | 5 | 6 · default: "4" |
Validate a payload
before you spend tokensshell
$ curl -X POST https://modelschemas.com/v1/validate \
-d '{"provider":"fal","endpointId":"fal-ai/veo3.1/fast/extend-video","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}