Select your video

Upload a video to add a new audio track

Supports MP4, WebM, MOV, MKV

Add Audio to Video Online

Need to add narration, music, or a new soundtrack to a video? Upload your video and audio file, then export a fresh version with the new track.

Everything runs locally in your browser. No uploads, no accounts, no watermarks.

Perfect for voiceovers, podcast-style videos, and social content.

How to Add Audio to a Video

Upload Your Video

Choose an MP4, MOV, WebM, or MKV file.

Select an Audio Track

Pick an MP3, WAV, or other audio file to use as the new soundtrack.

Export Instantly

Download your video with the new audio track in one click.

Why Add Audio Here?

No Uploads

Your files never leave your device.

Fast Export

Generate a finished video quickly, with no waiting.

Clean Output

No watermarks or quality loss.

Free to Use

Unlimited use with no subscriptions.

Frequently Asked Questions

Does this replace the original audio?

Yes, the new audio becomes the video’s soundtrack.

What audio formats are supported?

Most common formats like MP3 and WAV work great.

Do you upload my files?

No. Everything runs locally inside your browser.