WebMbased
WebMbased is a term that generally refers to content, software, or technologies that utilize the WebM open media container format. WebM is a royalty-free, open-source, high-quality video and audio format developed by Google. It is designed for the web and is widely used for streaming video due to its efficiency and compatibility with modern web browsers.
The WebM container can hold video streams encoded with VP8, VP9, or AV1 video codecs, and audio
When something is described as "WebMbased," it implies that it leverages the advantages of the WebM format.