falVideo to videoComing soon

blackforestlabs/flux-3/extend-video/draft

Name: blackforestlabs/flux-3/extend-video/draft
Brand: fal

blackforestlabs/flux-3/extend-video/draft is a video to video tool from fal that runs in the background and returns video. Coming soon: listed with its price, not yet open to runs.

This tool is listed but not yet available to run.

Priced by usage

Pricing

duration: 5 $0.39, 6 $0.468, 7 $0.546, 8 $0.624, 9 $0.702, 10 $0.78, 11 $0.858, 12 $0.936, 13 $1.014, 14 $1.092, 15 $1.17, 16 $1.248, 17 $1.326, 18 $1.404, 19 $1.482, 20 $1.56, otherwise $1.56 per run. The final charge comes from usage.

Limits

Runs: In the background
Returns: video
Longest queue wait: 3600s
Run deadline: 1800s
Largest inline input: 1024 KB
Largest input file: 500 MB
Largest output: 4768 MB
Outputs per run: 16

Input

Field	Kind	Default	Description
`prompt` required	text	—	The text prompt describing the draft video.
`aspect_ratio`	one of auto, 21:9, 2:1, 16:9, 4:3, 1:1, 3:4, 9:16	auto	Aspect ratio of the generated draft. `auto` lets the model choose.
`duration`	one of auto, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20	auto	Draft duration in whole seconds from 5 through 20, or `auto`.
`generate_audio`	true or false	true	Whether to generate audio for the draft video.
`safety_tolerance`	number (whole) 0 to 4	2	The safety tolerance level for the generated video. 0 is the strictest and 4 is the most permissive.
`video_url` required	URL or file	—	URL or data URI of the source MP4, at most 50 MiB.

Same request in code

curl https://api.spiral.ai/v1/runs \
  -H "Authorization: Bearer $SPIRAL_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
    "provider": "fal",
    "model": "blackforestlabs/flux-3/extend-video/draft",
    "input": {
      "prompt": "A red panda walks along a mossy log in a sunlit forest, one continuous unbroken shot.",
      "video_url": "https://storage.googleapis.com/falserverless/example_inputs/flux-3-red-panda.mp4"
    }
  }'