Add Audio to Video
Replace or add an audio track to a video with optional looping and shortest-duration output. It accepts video files and produces MP4. The operation uses the processing service when the selected conversion or transformation needs it.
- Input
- video
- Result
- MP4
- Capacity
- Up to 100 files / 250 MB total
- Privacy
- Temporary workspace removed after processing
1. Add your input. 2. Choose settings. 3. Check the result and download it. Your original file is not changed on your device. Privacy details
Saved settings — free
Reuse your preferred Add Audio to Video setup. Recipes stay in this browser and never include files or entered text.
No settings saved for this tool yet.
Run up to 100 compatible files (250 MB total), receive a ZIP when multiple results need packaging, and choose the download name.
Choose video files, select the available options, then run Add Audio to Video. The interface exposes the supported settings before creating MP4. The operation uses the processing service when the selected conversion or transformation needs it.
Convert video files between MP4, WebM, MOV and MKV using FFmpeg with configurable codec quality and resolution.
Reduce video file size using H.264 compression with CRF quality control, optional resizing and web-optimized MP4 output.
Cut a video to a selected start time and duration with precise FFmpeg timestamps and re-encoded output.
Resize video to custom dimensions or common 1080p, 720p, vertical and square presets while preserving aspect ratio.