Are files uploaded for this tool?

This browser tool processes the selected media locally on this device. The file is not uploaded to ArtPlayer servers for this workflow.

Will the export have a watermark?

No. ArtPlayer browser tools do not add watermarks to exported files.

The work runs in your browser, so speed depends on your device, browser, memory, source size, and the export settings needed for the result.

Recent Chrome, Edge, and other modern Chromium browsers usually work best for heavier browser media processing.

Try a smaller source, close other heavy tabs, reduce resolution or duration first, and keep the tab open until the export finishes.

Yes. Choose replace mode to use the uploaded audio as the video sound track.

Yes. Mix mode keeps the original sound and blends in the added audio.

Yes. Add a new audio file and choose settings that replace or mix with the original audio.

Use the timing controls on the page to align the added track before exporting.

Browser video tool

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

Drop a file here, or click to choose

Audio track

Audio mode

Three steps to finish the browser workflow.

1
Choose a video file
Choose the video that should receive the new audio track.
2
Choose audio
Choose a music, voice, or sound file to add to the selected video.
3
Add audio
Choose a video and an audio file, select replace or mix, then ArtPlayer runs FFmpeg locally and exports a new MP4.

Core details about privacy, browser support, output, and practical limits before you start.

The selected video and audio are processed in this browser through the shared FFmpeg task page.

Replace the original soundtrack, or mix a new audio file with the existing track.

When mixing tracks, set the original and added audio volume before export.

Check supported inputs, output formats and usage requirements before you start.

Supported input	A video plus an audio file that the processing runtime can decode.
Output result	Export options: MP4.
Processing and privacy	Processing runs on this device. Source media is not uploaded for this workflow.
Browser requirements	A browser with the decoding and encoding capabilities needed by the selected media. Available codecs vary by device.
Usage limits	Processing capacity depends on duration, dimensions, codecs, settings and available device memory. Large inputs can fail; keep the original file.
Can I mix the new audio with existing audio?	Yes. Mix mode keeps the original sound and blends in the added audio.