video/*
video/webm
File extensions: .webm
Open-source video container with VP8/VP9/AV1 codecs.
What is video/webm?
video/webm is the royalty-free video container championed by Google. WebM with VP9 gives smaller files than MP4/H.264 at similar quality and is supported by every modern browser except Safari without extensions.
Typical usage
WebRTC recordings, background videos, animated hero elements.
HTTP header example
Response header
Content-Type: video/webmReference
webmproject.org
Frequently asked questions
What is the video/webm MIME type?
video/webm is the royalty-free video container championed by Google. WebM with VP9 gives smaller files than MP4/H.264 at similar quality and is supported by every modern browser except Safari without extensions.
What file extension does video/webm use?
Files served as video/webm typically use the extension .webm. The most common is .webm.
How do I set the Content-Type for video/webm?
Send the HTTP response header Content-Type: video/webm. WebRTC recordings, background videos, animated hero elements.
Is video/webm an official MIME type?
Yes. video/webm is officially registered with IANA (webmproject.org), so standards-conformant clients recognize it.