falImage to videoComing soon

blackforestlabs/flux-3-max/keyframes-to-video

Name: blackforestlabs/flux-3-max/keyframes-to-video
Brand: fal

blackforestlabs/flux-3-max/keyframes-to-video is an image 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 (default) $0.138125, 6 $0.16575, 7 $0.193375, 8 $0.221, 9 $0.248625, 10 $0.27625, 11 $0.303875, 12 $0.3315, 13 $0.359125, 14 $0.38675, 15 $0.414375, 16 $0.442, 17 $0.469625, 18 $0.49725, 19 $0.524875, 20 $0.5525, otherwise $0.5525 per run. The final charge comes from usage.

Limits

Runs: In the background
Returns: video
Longest queue wait: 3600s
Run deadline: 3600s
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 how the video moves between keyframes.
`keyframes` required	JSON	—	Keyframe images pinned to frame positions in the generated video. Up to 10 keyframes with unique `frame_index` values.
`duration`	one of 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20	5	Duration of the generated video in seconds.
`resolution`	one of 720p, 1080p	720p	Resolution of the generated video.
`reasoning_level`	one of low, high	high	How much effort the harness spends reasoning about the given prompt. Higher reasoning effort means slower generation time.
`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 video. `auto` uses 16:9 for text prompts and follows the first image otherwise.
`generate_audio`	true or false	true	Whether to generate audio for the video.
`seed`	number (whole)	—	The seed to use for the generation. Random when not provided.

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-max/keyframes-to-video",
    "input": {
      "prompt": "The woman picks up a brown felt fedora, lifts it onto her head with both hands and adjusts the brim, smiling at the camera. Soft studio light against a plain…",
      "keyframes": {}
    }
  }'