Your original stays unchanged
The tool creates a separate result, so processing never overwrites your original file.
- Input formats
- MP4, MP3, WAV
- Output formats
- MP4, MOV, WEBM
Fast processing
Add music or audio
Add music or narration with timing and volume controls.
Select video and audio filesMP4 · MOV · WEBM · MP3 · WAV · M4A · Original file protected
Tool settings
Output format
Audio mode
Result preview
WaitingYour result will appear here
Choose files and run the tool to preview the processed video, audio, or subtitles.
Selected files are handled securely and your originals remain unchanged.
PRACTICAL GUIDE
How to use Add music or audio
Add music or narration with timing and volume controls.
1. Choose the source
Choose the supported files you want to process and confirm their order.
2. Adjust the output
Use the visible controls to set the size, format, quality, timing, or effect for this task.
3. Preview and save
Run the tool, review the result, and download only the version you want to keep.