falAudio to videoComing soon

fal-ai/ltx-2.3/audio-to-video

Name: fal-ai/ltx-2.3/audio-to-video
Brand: fal

fal-ai/ltx-2.3/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.

Priced by usage

Pricing

$0.13 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
`audio_url` required	URL or file	—	URL of the audio file to generate a video from. Duration must be between 2 and 20 seconds; pro models support a maximum of 10 seconds. Must be publicly accessible or base64 data URI.
`image_url`	URL or file	—	URL of an image to use as the first frame of the video. If not provided, prompt is required.
`prompt`	text	—	Text description of how the video should be generated. Required if image_url is not provided. When image_url is provided, this describes how the image should be animated.
`guidance_scale`	number 1 to 50	—	Guidance scale for video generation. Higher values make the output more closely follow the prompt. Defaults to 5 for text-to-video, or 9 when providing an image.
`aspect_ratio`	one of auto, 16:9, 9:16	auto	The aspect ratio of the generated video. If 'auto', the aspect ratio will be determined automatically based on the input image, or defaults to 16:9 if no image is 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": "fal-ai/ltx-2.3/audio-to-video",
    "input": {
      "audio_url": "https://v3b.fal.media/files/b/0a90dfe7/3a-DUXzO79XWIYwUDfHZX_output.mp3"
    }
  }'