Add music to video the track under the voice, at the right volume.
To add music to a video, choose the video and the song, set both volumes and click create. The music dips by itself when someone talks, fades in and out, and loops to the end if it's short. For most videos the picture is copied without re-encoding. Free, with no watermark.
Free, no sign-upChoose the video and the music to set up the mix.
The video has no sound, so the music plays on its own.
Use music you're allowed to use: your own, licensed for video, or in the public domain. Instagram, TikTok and YouTube recognize protected music and may mute the audio, block the video or send its revenue to the music's owner.
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How to add music to a video
- 01
Choose the video and the music
Drag in the video (MP4, MOV, WebM or MKV) and the music (MP3, M4A, WAV, OGG or FLAC), or tap each area to choose. We show how long each one is.
- 02
Set up the mix
Set the music volume and the original sound's, let the music dip when someone talks, and choose where it starts, whether it loops or plays once, and the fades.
- 03
Create and download
Click create and follow the progress. Watch the preview, check the report and download the MP4, named after the video plus with-music.
How loud should background music be?
Background music works when nobody has to strain to hear the voice. Commercial songs are usually mastered far louder than speech recorded on a phone, so leaving both at 100% almost always lets the track swallow the speaker. A good starting point is music between 20% and 40% and the original sound at 100%. Watch the preview on headphones and on a phone speaker, which is where most people will see it.
With the option to lower the music when someone talks, it sits about 12 dB lower under the voice and eases back to your chosen volume in the pauses. For videos without speech, like a photo montage or a timelapse, turn that option off, raise the music and, if you like, set the original sound to zero.
| Type of video | Music | Original sound | Lower on speech |
|---|---|---|---|
| Vlog, lesson or testimonial | 20% to 30% | 100% | On |
| Reels with narration | 30% to 40% | 100% to 120% | On |
| Wedding or event | 40% to 60% | 50% to 80% | On |
| Montage with no speech | 80% to 100% | 0% to 30% | Off |
How does the music dip by itself when someone talks?
Before mixing, we listen to the whole original sound and measure its level every hundredth of a second. Stretches well above the background noise count as speech. Short pauses between words don't let the music jump back up, so it never pumps in the middle of a sentence. Since we already know where speech begins, the music starts going down a quarter of a second early and is already low when the first word arrives.
When the person stops talking, the music rises again over a little more than half a second. It's the same move that makes radio and TV narration sound polished, without anyone riding the volume line by line. If the original sound has loud, constant noise like wind or traffic, the music may stay low the whole time; in that case, turn the option off and use a lower music volume.
What if the song is shorter or longer than the video?
If the song ends before the video, it can loop to the end. Each pass comes in over the end of the previous one with a smooth transition of up to a second and a half, with no click and no gap. If you'd rather it play once, the rest of the video keeps only the original sound. When the song is longer than the video, it's cut at the end, with the fade out so it doesn't stop abruptly.
You can choose at which second of the video the music comes in, say after a spoken opening, and from which point of the song it starts, to skip a long intro and land right on the chorus. The final video always runs exactly as long as the original.
Can I use any song in my video?
No. Music has owners, and putting a track in a video is a use that needs permission. Instagram, TikTok and YouTube match audio against catalogs of protected music and, when they find one, may mute the video, block it in some countries or send its revenue to whoever holds the rights. Using only a few seconds doesn't change that.
Stick to music you wrote, tracks bought with a license for video, free libraries that allow that use, such as the YouTube Audio Library, or public domain works, always checking the license. Watch out for a common mix-up: royalty-free means you don't pay per play, but you still need the license.
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Frequently asked questions
How do I add music to a video online for free?
Choose the video and the song on this page, set the volumes and click create. Since the picture isn't re-encoded, the MP4 comes out fast even for long videos. It's free, with no sign-up, no watermark and no usage limit.
Does adding music lower the video quality?
For most videos, no. When the video is H.264, HEVC, AV1 or VP9, which covers nearly every phone, camera and web video, the picture is copied exactly as it was. Only the sound is rebuilt, with the voice and the music together in AAC.
How do I make the music quieter than the voice?
Keep the music between 20% and 40% and leave the option to lower the music when someone talks checked. Wherever there's speech it drops about 12 dB and comes back in the pauses. If the voice is still buried, lower the music more or raise the original sound.
Can the music loop until the video ends?
Yes, that's the default. If the song is shorter than the video, it starts over with a smooth transition at each loop. If you'd rather it play once, choose that option and the rest of the video keeps only the original sound.
Can I remove the original sound and keep only the music?
Yes. Set the original sound's volume to 0%, and the music becomes the video's only sound. To remove the sound without adding anything, use the mute video tool.
Can my video with music get muted on Instagram or YouTube?
Yes, if the song is protected and you don't have a license. The platforms recognize the audio and may mute, block or send the revenue to the music's owner. Use your own tracks, licensed ones, or libraries that allow use in videos.
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