Add Music to Video
Put a soundtrack on a clip. Replace the original sound, or keep it and mix the music underneath. The track is looped or trimmed to the video and faded out at the end.
- Nothing is uploaded
- Free, no sign-up, no watermark
- Works offline once loaded
Drop a video here
or choose a file, or paste
MP4, MOV, WEBM, MKV, AVI, M4V, 3GP, FLV, WMV and more
Processed on your device. Nothing is uploaded.
How to use Add Music to Video
- 1
Add the video
Drop the video on the main drop zone.
- 2
Add the music or voice-over
Add an audio file (or a video whose sound you want) under Music or voice-over.
- 3
Choose mix or replace
Under Original sound pick Keep and mix or Replace it. Set the Music volume and, when mixing, the Original volume.
- 4
Line it up
Use Start the music at to skip an intro, and decide whether to Loop the music if it is shorter and Fade the music out at the end.
- 5
Add audio and download
Press Add audio, follow the progress, then preview and Download.
Why use Aback Video for this
Mix or replace
Put music under a voice, or swap the sound entirely.
Separate volumes
Set the music and the original sound independently, from silent to double.
Fits the video
Music is looped or trimmed to the video's length and faded out at the end.
Picture untouched
The video stream is copied, not re-encoded, so it is fast and keeps its quality. Nothing is uploaded.
Frequently asked questions
Is the video re-encoded?
No. Only the audio is processed; the picture is copied as it is, which is why this is quick even for long videos.
What volume should the music be under speech?
Around 20 to 40 percent with the original at 100 percent keeps speech clear. Play the result and adjust if the music competes with the voice.
Can I use music from another video?
Yes. Add a video file as the music input and its sound track is used.
What about copyright?
Only use music you have the right to use. Social platforms may mute or block videos with copyrighted songs.
Are my files uploaded?
No. The video and the music are combined in your browser.
Does it work on my phone?
Yes, in current mobile browsers. Choose the audio from Files or your music app's downloads.