Convert MP4 to WebM
Convert MP4 files to WebM for HTML5 video with open codecs.
- Input:
- MP4
- Output:
- WEBM
- Max size:
- 100 MB
- Runs:
- On secure servers
What the MP4 to WebM does
Convert MP4 videos to WebM (VP9 + Opus) for websites that prefer open formats or need an alternative source for the HTML video element.
Options
- Quality: High quality, Balanced or Smallest file.
How to use the MP4 to WebM
- 1
Drag your MP4 file into the upload area, or click it to browse your device.
- 2
Adjust the options to suit your needs — the defaults work well for most files.
- 3
Click “Run MP4 to WebM” to start processing.
- 4
Preview the result, then download it. Batch results can be downloaded together as a ZIP.
Supported formats
- MP4 is the most widely supported video container, usually with H.264 or H.265 video and AAC audio. More about the MP4 format.
- WebM is an open video format using VP8/VP9/AV1 video and Opus/Vorbis audio, designed for the web. More about the WebM format.
Frequently asked questions
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