Add audio to a video
Lay music or a voice-over over a video, or mix it in.
Drop the video
or click to choose (.mp4, .mov, .webm, .mkv, .avi). Up to 100 MB per file.
Drop music or a voice-over
or click to choose (.mp3, .m4a, .aac, .wav, .ogg). Up to 100 MB per file.
Mixing suits the case where quiet music sits under speech.
The result ends with the shorter of the two tracks. Music longer than the video is cut off; music shorter than the video leaves the rest of it silent.
The video is processed in your browser, nothing is uploaded. The first run downloads about 32 MB of the computing core, after that everything runs without waiting. Longer files take a few minutes.
- Runs right in your browser
- Free, no sign-up
More about Add audio to a video
How to add music to a video
Drop the video in, add an audio file and choose whether the original sound should go or the new track should be mixed in. You set the volume of the added music up front, so it does not drown out speech.
Frequently asked questions
Which audio formats can I use?
MP3, M4A, AAC, WAV and OGG up to 30 MB. The result is always an MP4 with an AAC track, which every phone and social network can play.
What happens if the music is longer than the video?
The result ends with the shorter of the two tracks, so the music is cut off at the end of the video. If the music is shorter, the rest of the video runs without it.
Does the picture quality suffer?
No, the picture is only repackaged. Just the audio is re-encoded, which is quick even on longer videos.