What is WebM?
WebM is an open, royalty-free, media file format designed for the web. Modern browsers like Chrome, Firefox, Safari will all have future support for this file type. It provides extrememly high quality video with the VP8 codec and plays great on older browsers and computers.
WebM is optimized for the web. It provides a simple container format, high quality real time video and a minimal codec profile
Future Proof HTML5 Support
WebM is an open, royalty-free, media file format designed for the web. WebM defines the file container structure, video and audio formats. WebM files consist of video streams compressed with the VP8 video codec and audio streams compressed with the Vorbis audio codec. The WebM file structure is based on the Matroska container.
Excellent Quality Output Video
Openness and innovation. A key factor in the web's success is that its core technologies such as HTML, HTTP, and TCP/IP are open for anyone to implement and improve. With video being core to the web experience, a high-quality, open video format choice is needed. WebM is 100% free, and open-sourced under a BSD-style license.