video tools
Add Background Music & Audio to Video
Enhance your videos with royalty-free background music, voiceover commentary, or custom audio tracks. Replace the original audio or mix both together seamlessly.
Processed locally in your browser sandbox.
Upload video to add music track
Supports MP4, WebM, MOV, MKV up to 500MB
Browse Video File
100% Client-Side Privacy • Zero Server Uploads
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How to Use Add Audio to Video
1
Upload Video
Select your video file.
2
Upload Audio Track
Select your MP3 or WAV music/voice file.
3
Mix & Export
Adjust volume balance and export the combined video.
About Add Audio to Video
Mixes multiple Web Audio source nodes into an audio destination stream and multiplexes the combined audio stream with the video canvas recorder.
Supported Formats
MP4WebMMOV
Key Features
- Option to replace original audio or mix together
- Volume sliders for video audio and background music
- Automatic audio loop option if audio is shorter than video
- Instant synchronized playback preview
Frequently Asked Questions
Yes! Use the Mix mode to keep your original speech while adding background music at a lower volume.
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