Music on a video
Replace or mix, with fades.
Free tool · on your device
GUIDE · VIDEO
How to add music to a video for Instagram or TikTok
Open the free Music on a video tool, add your video and press “Choose music” to pick the song. Decide whether it replaces the original sound or mixes with it, set the volume, start second and fades, and press “Add music” to download it.
Open Music on a videoFree with an account, no subscription or watermark. Your files never leave your device.
STEP BY STEP
5 steps
Add the video and the music
An MP4, WebM or MOV video and, with “Choose music”, an MP3, M4A, WAV or OGG up to 100 MB.
Replace or mix
“Replace it with the music” removes the original sound; “Mix it with the music” keeps it and lets you set both volumes.
Set the start and fades
In “The music starts at”, type the second of the song, like 0:30. Choose a fade in and fade out, and whether it repeats when shorter.
Download and adapt
Press “Add music” and download the video. If it is horizontal, Change video aspect ratio makes it 9:16 for Reels and TikTok.
TOOLS IN THIS GUIDE
What you will use
MP3 cutter and ringtone maker
Cut with the waveform in view, make ringtones.
Free tool · on your device
Video to 9:16, 1:1 or 16:9
For TikTok, Reels, Instagram or YouTube.
Free tool · on your device
TIPS
To get it right
Tip 1
To keep the voice clear over background music, set the music between 20 and 40% volume.
Tip 2
If you only want part of the song, trim it first with the MP3 cutter or use “The music starts at”.
Tip 3
Use music you have the right to use: Instagram and TikTok may mute or block videos with protected songs.
Add music to a video: common questions
What if the song is longer than the video?
The video keeps its length: the music is cut at the end with the fade-out. If it is shorter, it repeats or ends earlier, as you choose.
Can I use Instagram or TikTok music?
Music from their libraries is added inside each app when you post. Here you add an audio file you have on your device and the rights to use.
What are the limits?
A video up to 300 MB and 10 minutes, and music up to 100 MB. The video is saved up to 1080p; saving video needs WebCodecs.
Is it free?
Yes. The free tools in this guide run in your browser and add no watermark. Tools that create files come with 30 welcome uses on a free account, then cost 1 credit per use; tools that show the result on screen have no usage cap. You can try them before signing up; to download the result or keep using them we ask for a free account, with no subscription.