WebM to MP4.
MP4 muxing requires the FFmpeg build; otherwise WebM.
Drop your video here
or click to browse — MP4, WebM, MOV, MKV, M4V
Settings
Convert WebM video for wider compatibility
WebM to MP4 prepares a WebM recording for devices and applications that prefer MP4.
MP4 output requires the local FFmpeg engine. Where it is unavailable, VideoDock may provide a WebM fallback.
The source recording is processed locally.
Your videos never leave your device.
VideoDock processes your files inside the browser tab. Nothing is uploaded to a VideoDock processing server, stored in the cloud or sent to a third-party video processing service.
How to use WebM to MP4
- Select the WebM file.
- Check that MP4 processing is available in your browser.
- Choose the desired settings.
- Convert the recording locally.
- Download the MP4 result.
Supported formats
Input is WebM. True MP4 output depends on FFmpeg availability and cross-origin isolation support.
Browsers cannot normally create MP4 directly. VideoDock uses FFmpeg locally when the browser environment supports it.
No. VideoDock processes the file locally inside your browser. Your video is not uploaded to a VideoDock processing server or stored in the cloud.