Convert Video to WebM
Convert videos to WebM (VP9/Opus) for open, web-friendly playback.
- Input:
- MP4, MOV, MKV, AVI
- Output:
- WEBM
- Max size:
- 100 MB
- Runs:
- On secure servers
What the Video to WebM does
Convert videos to WebM with VP9 video and Opus audio, an open format designed for HTML5 video on websites.
Options
- Quality: High quality, Balanced or Smallest file.
Good to know
VP9 encoding is slower than H.264, so conversion takes longer than an MP4 export.
How to use the Video to WebM
- 1
Drag your MP4, MOV, MKV, AVI 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 Video 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.
- MOV is Apple's QuickTime container, used by iPhones and many cameras. More about the MOV format.
- MKV (Matroska) is a flexible container that can hold many video, audio and subtitle tracks.
- AVI is an older Microsoft video container still found in archives.
- 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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