falVideo to videoComing soon

fal-ai/id-v2v/relight

Name: fal-ai/id-v2v/relight
Brand: fal

fal-ai/id-v2v/relight 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

$0.26 per second. Measured from the input file. 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 prompt describing the restyled video to generate.
`video_url` required	URL or file	—	URL of the source video whose motion and framing drive the generation.
`image_url` required	URL or file	—	URL of the restyled first frame. The video is regenerated in this frame's identity/style.
`keyframes`	JSON	—	Optional restyled keyframes pinned at specific output frame indices to anchor identity over long videos.
`resolution`	one of 480p, 720p	720p	Output resolution tier. Orientation follows the source video (720p is 1280x720 or 720x1280; 480p is 832x480 or 480x832).
`num_frames`	number (whole) 17 to 241	81	Maximum number of output frames. Capped at the source video's frame count.
`num_inference_steps`	number (whole) 2 to 40	30	Number of diffusion sampling steps per clip. Higher improves quality but is slower.
`guidance_scale`	number 1 to 10	5	Classifier-free guidance scale. Controls prompt adherence versus creativity.
`vace_scale`	number 0 to 2	1	VACE conditioning scale. Controls how strongly the source video's structure constrains the generation.
`seed`	number (whole)	—	Random seed for reproducibility. The same seed is used for every clip of a multi-clip generation.

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": "fal-ai/id-v2v/relight",
    "input": {
      "prompt": "An astronaut walking through an autumn forest",
      "video_url": "https://storage.googleapis.com/falserverless/model_tests/video_models/mmaudio_input.mp4",
      "image_url": "https://storage.googleapis.com/falserverless/example_inputs/ltxv-image-input.jpg"
    }
  }'