// mime type · audio / video type
video/webm
WebM video · .webm
What video/webm is
video/webm is an open video format (VP8/VP9/AV1) that often compresses smaller than MP4. Offer both for the widest reach.
How it's used
You'll see this as a Content-Type value on requests and responses — for example Content-Type: video/webm. It's the type associated with the .webm file extension. Audio and video types identify media formats for playback in the browser or a media player.