Re: [Trisquel-users] what media file formats are free software?

[tegskywalker]

WebM actually has two versions. The first and currently most supported uses  
VP8 for video and Vorbis for audio. The second version has VP9 for video and  
Opus for audio, but is only supported by Chrome/Chromium and Firefox as of  
the past year. The WebM plugin for Internet Explorer  
(http://www.webmproject.org/ie) hasn't been updated to the version 2 spec yet  
which is unfortunate.