falAudio to videoComing soon

fal-ai/longcat-single-avatar/audio-to-video

Name: fal-ai/longcat-single-avatar/audio-to-video
Brand: fal

fal-ai/longcat-single-avatar/audio-to-video is an audio 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.

Price pending

Pricing

Price pending.

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
`audio_url` required	URL or file	—	The URL of the audio file to drive the avatar.
`prompt`	text	A person is talking naturally with natural expressions and movements.	The prompt to guide the video generation.
`negative_prompt`	text	Close-up, Bright tones, overexposed, static, blurred details, subtitles, style, works, paintings, images, static, overall gray, worst quality, low quality, JPEG compression residue, ugly, incomplete, extra fingers, poorly drawn hands, poorly drawn faces, deformed, disfigured, misshapen limbs, fused fingers, still picture, messy background, three legs, many people in the background, walking backwards	The negative prompt to avoid in the video generation.
`num_inference_steps`	number (whole) 10 to 100	50	The number of inference steps to use.
`text_guidance_scale`	number 1 to 10	4	The text guidance scale for classifier-free guidance.
`audio_guidance_scale`	number 1 to 10	4	The audio guidance scale. Higher values may lead to exaggerated mouth movements.
`resolution`	one of 480p, 720p	480p	Resolution of the generated video (480p or 720p). Billing is per video-second (16 frames): 480p is 1 unit per second and 720p is 4 units per second.
`num_segments`	number (whole) 1 to 10	1	Number of video segments to generate. Each segment adds ~5 seconds of video. First segment is ~5.8s, additional segments are 5s each.
`seed`	number (whole)	—	The seed for the random number generator.
`enable_prompt_expansion`	true or false	false	Whether to enable prompt expansion using an LLM to enhance the prompt for better video quality.

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/longcat-single-avatar/audio-to-video",
    "input": {
      "audio_url": "https://v3b.fal.media/files/b/0a87a827/QDAEdCQOPXxYWPUl2fyTY_4421psm.mp3"
    }
  }'