🎵 Add Music to Video (MP4/MKV/WebM)

Add Background Music to Videos Online

Want to enhance your videos with music or narration? This tool lets you quickly and securely add audio to video files (MP4, WebM, MKV) directly in your browser. Powered by FFmpeg.wasm, your files are never uploaded or shared – everything is done client-side.

Why Use This Tool?

• 🔒 100% private – no server involved
• ⚡ Fast in-browser audio/video merging
• 🎧 Supports MP3, AAC, WAV audio
• 🎥 Compatible with MP4, WebM, MKV videos
• 🎯 No account or login needed

Steps to Use:

1. Upload your video file
2. Upload your background music file
3. Click “Merge & Export”
4. Wait for processing and download the final video

SEO Keywords:

add music to video online, free video music tool, combine mp4 with mp3, background music editor, video audio merger, ffmpeg music video merge, online audio to video tool, privacy safe video editor