GET
/v1/schemas/fal/video/blackforestlabs/flux-3/extend-video
Accept:
| field | recorded source |
|---|---|
| schema | Source linked above. upstream-spec Source trace4cdaa4059a053fa855ca73159df0a6b46c353e153215c4834b930d2273abc894{
"fetchedAt": 1792126843,
"extractorVersion": "1",
"verifiedAt": null
} |
Request body
7 properties · 2 required · 0 $defs| property | type | description | constraints |
|---|---|---|---|
| prompt* | string | The text prompt describing how the video continues from the source clip's final frames. | |
| video_url* | string | URL of the input video. MP4, under 50 MB and under 15 seconds. | |
| generate_audio | boolean | Whether to generate audio for the video. | default: true |
| duration | enum | Duration of the generated video in seconds. `auto` lets the model choose. | auto | 5 | 6 | 7 | 8 | 9 · +11 more · default: "auto" |
| safety_tolerance | integer | The safety tolerance level for the generated video. 0 is the strictest and 4 is the most permissive. | 0 ≤ n ≤ 4 · default: 2 |
| aspect_ratio | enum | Aspect ratio of the generated video. `auto` lets the model choose. | auto | 21:9 | 2:1 | 16:9 | 4:3 | 1:1 · +2 more · default: "auto" |
| resolution | enum | Resolution of the generated video. `1080p`, `1440p` (2K) and `2160p` (4K) are finished by the video upsampler; exact dimensions depend on the aspect ratio. | 720p | 1080p | 1440p | 2160p · default: "720p" |
Validate a payload
before you spend tokensshell
$ curl -X POST https://modelschemas.com/v1/validate \
-d '{"provider":"fal","endpointId":"blackforestlabs/flux-3/extend-video","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}