Catalog/Video/fal

V1.1 Video to Video Sound Effects

Edits a video you give it

Liveby Sonilo

Adds synchronized, royalty-free, commercial-use-safe sound effects to a video.

Returns the finished video with the generated audio mixed in.

Ask your agent

Say it in your own words. Your agent picks this tool, fills in the details and brings back the answer.

Use V1.1 Video to Video Sound Effects to make this clip look like it was shot at night.

Change the background of this video to a beach.

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How it works

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Ask in your own wordsYour agent picks the right tool and fills in the details for you.
Pay only when it worksEach use comes out of your balance. If it fails, you aren't charged.

For developersSummary, tool id, API call and input schema

Video API by Sonilo, callable through Superpowers. It costs $0.049 per 5s clip, charged only when the call succeeds. Call it with one API key: POST /v1/run with "tool": "fal.sonilo-v1.1-video-to-video-sound-effects", or over MCP with run_tool.

Tool id
Price per call: $0.049 / 5s clip

Call it

Also over MCP as run_tool

curl -X POST https://superpowers.tools/v1/run \
  -H 'Authorization: Bearer $SP_KEY' \
  -d '{"tool":"fal.sonilo-v1.1-video-to-video-sound-effects","input":{"video_url":""},"idempotency_key":"example-request-1"}'

Input

5 fields · 1 required

{
  "type": "object",
  "required": [
    "video_url"
  ],
  "properties": {
    "video_url": {
      "type": "string",
      "description": "The video to add sound to (public URL, or upload a file). The generated audio matches the video's length."
    },
    "prompt": {
      "type": "string",
      "description": "Optional. Describe the kind of sound you want; it steers the generated audio for every scene. Leave empty to caption the video automatically."
    },
    "segments": {
      "type": "array",
      "description": "Optional. Split the video into time ranges, each with its own sound description. Leave empty to split into scenes automatically."
    },
    "audio_format": {
      "type": "string",
      "description": "Format of the returned audio file: aac (default), mp3, wav, or flac. (The video with sound is always AAC.)",
      "default": "aac",
      "enum": [
        "wav",
        "mp3",
        "aac",
        "flac"
      ]
    },
    "keep_speech_vocal": {
      "type": "boolean",
      "description": "Keep the original video's speech/vocals. When on, the source audio is separated (music source separation) and the isolated vocals are kept as recorded, with the generated sound mixed in at a level matched to the voice; the rest of the original soundtrack (music, ambience) is dropped. Applies to the ",
      "default": false
    }
  }
}