Local processing
The selected video and audio are processed in this browser through the shared FFmpeg task page.
Browser video tool
Add Audio to Video
Local processingReplace or mixNo upload
Add music or a voice track to a video in the browser. Replace the original audio or mix both tracks without uploading.
Source video
Choose a file
Audio track
Choose a music, voice, or sound file to add to the selected video.
Replace the video audio or mix both tracks together.
How it works
Three steps to finish the browser workflow.
Choose a video file
Choose the video that should receive the new audio track.
Choose audio
Choose a music, voice, or sound file to add to the selected video.
Add audio
Choose a video and an audio file, select replace or mix, then ArtPlayer runs FFmpeg locally and exports a new MP4.
Everything you need
Core details about privacy, browser support, output, and practical limits before you start.
Replace or mix
Replace the original soundtrack, or mix a new audio file with the existing track.
Mix controls
When mixing tracks, set the original and added audio volume before export.
Frequently asked questions
Find quick answers about privacy, browser support, exports, and what to try when a file is heavy.
Related tools
Continue editing with nearby ArtPlayer tools that work with the same local, browser-first workflow.
