#Webm[]
Primary audience[]
all, free software advocates, video encoding specialists
Definition[]
WebM is a free software video format released by Google and On2 (the latter being the creators of Theora) which is composed by Vorbis audio, VP8 for video, and a variant of Matroska as a container. The format is currently the best option for encoding video in free formats, with a compression similar to baseline H.264.