WebM-zu-MP4-Konverter

WebM in MP4

Läuft in Ihrem Browser · Kein Hochladen

Das Werkzeug selbst und die Anleitung auf dieser Seite sind vorerst auf Englisch. Es funktioniert genauso: Alles läuft in Ihrem Browser.

Drag & drop a WebM video here

WebM videos, e.g. from screen recorders and websites · converted to MP4

Your files stay on your device. Nothing is uploaded.

How to convert WebM to MP4

Choose your WebM video.
The output is set to MP4; choose the quality used if the video has to be re-encoded.
Press Convert and download the MP4 file.

WebM usually contains VP8, VP9 or AV1 video, which is re-encoded to H.264 for the widest support.
When the video and sound can be copied into the new format as they are, they are not re-encoded: no quality loss, and very fast.
Best in current Chrome and Edge; recent Safari and Firefox work too.

Everything happens in your browser. Your videos are never uploaded, and this site's security policy blocks the page from sending files anywhere.

No server-imposed file size limits. The practical limit is your device's memory: several gigabytes work on most computers.

No. They are converted in your browser and never sent anywhere.