Add Music to Video

Add Music to Video puts new sound on a video. Choose the video, then add a song, a voice-over or any sound file. Keep the video’s own sound and mix the new sound under it, or replace it completely. Each added sound has its own volume, start time, fade in and fade out, and can skip a slow intro or repeat until the video ends.

Press play to hear the mix with the picture before you save: the sound is mixed by the same code that makes the file, so what you hear is what you get. A timeline under the preview shows where each sound plays and where a looping song starts again. Ducking is there for talking videos: it lowers the music while the video’s own sound is loud, then brings it back up in the pauses.

The picture is copied into the new file exactly as it is, never re-encoded, so it keeps its full quality and saving is quick. Only the sound is made new. Everything happens in your browser; your video and music never leave your device.

1. Tap “Choose a video” or drop a video on the box.
2. Press “Add music or voice-over” and pick a sound file. Use “Add another sound” for more, such as music plus a voice-over.
3. For the video’s own sound choose “Keep and mix” or “Replace it”, and set its volume. Turn on ducking (Light, Medium or Strong) for a talking video.
4. On each sound set the volume, “Starts at” (or press “Now” to start it at the preview’s spot), “Skip the first”, the fades and “Repeat until the video ends”.
5. Press play to hear the mix, then press “Save video”, check the result and press “Download video”.

• Keep and mix the video’s own sound, or replace it, with its own volume up to 200%.
• Up to six added sounds, each with volume, start time, a skipped intro, fade in, fade out and looping.
• Ducking in three strengths that lowers the music while the video’s sound is loud, with smooth, unhurried recovery.
• Live preview of the real mix in step with the picture; changes are heard straight away.
• A timeline showing where every sound plays, including each repeat of a looping song; tap it to jump.
• The picture is copied as it is: no quality loss and a quick save.
• Sounds that would run past the end are cut where the video ends, and a soft limiter stops loud peaks from crackling.
• Takes MP3, M4A, WAV, OGG, Opus and FLAC, or the sound from another video.

• Music under speech usually sounds right at 25–50% of its own volume. Turn ducking on and the voice stays clear without the music disappearing.
• Use “Skip the first” to start a song on its chorus, and a 2–3 second fade out so the video doesn’t stop mid-note.
• For a voice-over, play the preview to the right moment, pause, and press “Now” on the voice-over to start it there.
• A short loop (a beat or ambience) with “Repeat until the video ends” covers a video of any length.
• Only use music you have the right to use, especially on social media, where copyrighted songs can be muted or blocked.