Add Audio to Video
Add music or an audio track to your video online for free. Replace the sound in seconds. Nothing is uploaded.
Nothing leaves your device
Runs in your browser
Free, no sign-up
Drop your video here or click to browse
Supports MP4, MOV, WebM, MKV · nothing is uploaded
The chosen audio replaces the video's sound. Output length matches the shorter of the two.
Processing your video…
Preparing…
0%Calculating…
📂
Reading files🎵
Adding audio💾
Encoding output✅
Your file is ready!
All done, 100% in your browser
How to add audio to video
01
Add video & audio
Drop in your clip and the music or voice track. Nothing is uploaded.
02
Set the sound
Replace or mix in the new audio to match your video.
03
Download
Save the video with its new soundtrack. Free and private.
Frequently asked questions
How do I add music to a video?
Upload your video and an audio file; the tool combines them and lets you download the result.
Does it replace or mix the original audio?
It replaces the video's sound with your track. Mute the video first if that's what you need.
Is anything uploaded?
No. Both files stay in your browser.
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