Audio · 12
Add Music to Video
Drop a video, drop a song, balance the mix with one slider. Fades in and out included. The video stream stays untouched.
Drop your video here
MP4, WebM, MOV, MKV — you'll add the music in the next step
drop works anywhere on this page
Put music on a video — with a real mix, not a replacement
Most "add music" tools blindly replace the audio track. This one gives you a balance slider: at the left end you hear only the original sound, at the right only the music, and anywhere between is a weighted mix — perfect for background music under speech. The music is trimmed to the video's length automatically, with optional 2-second fades so it never starts or ends abruptly.
Quality preserved where it counts
Only the audio is re-rendered. The video stream is copied untouched whenever the container allows, which means zero generation loss on the picture and a fast export — the encoder only has to think about sound.
Good combinations
- Voiceover video + light music bed — balance around 70% original / 30% music.
- Montage / b-roll + soundtrack — slide fully to music.
- Gameplay + commentary track — record the commentary with our audio recorder, then mix at ~40/60.
Use royalty-free or licensed music for anything you'll publish — platforms fingerprint audio aggressively. Everything here runs on-device: neither file is uploaded, nothing is watermarked.
FAQ
Can I keep the original audio and add music underneath?
Yes — that's what the balance slider is for. Slide toward Original for a quiet music bed under speech.
What if the music is longer than the video?
It's trimmed to the video's length automatically; the fade-out makes the ending feel intentional.
Which audio formats can I add?
MP3, WAV, M4A/AAC, OGG and FLAC. The video stream is copied untouched when possible.
Are my files uploaded to mix them?
No — the mix renders in your browser. Neither file leaves your device.