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Add or replace video sound

Put a song or voice-over onto a video, or mix it with the sound already there.

  • Runs in your browser
  • In: MP4, MOV, MKV, WEBM, AVI, 3GP
  • Out: MP4, WEBM, MKV
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About Add or replace video sound

Add the video and the audio file together. The new sound can replace the original or be mixed with it, with a volume for each, and it can repeat if it is shorter than the video. The result is always exactly as long as the video, and the picture is copied untouched wherever the format allows.

How to use it

  1. 1Drop your MP4, MOV, MKV and WebM file into the box, paste it, or tap browse.
  2. 2Adjust the settings if the defaults are not what you need.
  3. 3Run the tool. The work happens on your own device.
  4. 4Download the result.

Questions

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