Video format
.webm
Web Media
WebM is Google's open-source video format designed specifically for the web. It offers excellent compression and quality, especially with the VP9 and AV1 codecs, and is royalty-free.
MIME type
video/webm
Developer
Introduced
2010
Advantages
- Royalty-free and open source
- Excellent web browser support
- Great compression with VP9/AV1
- Designed for HTML5 video
Limitations
- Limited support outside web browsers
- Fewer editing tools available
- Hardware decoding less common
- Less universal than MP4
When to use WebM
HTML5 web video
YouTube (internal format)
Web applications
Open-source projects
Technical details
WebM uses the Matroska container with VP8, VP9, or AV1 video codecs and Vorbis or Opus audio. It supports alpha transparency and is optimized for streaming.
Convert WebM to other formats
7 conversion options available
Convert to WebM from other formats
7 formats can be converted to WebM
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