Q. Does WebM support DRM?
WebM is the VP8 video codec and the Vorbis audio codec packaged in the Matroska-like WebM container. It is not the job of the codecs or the container to perform digital rights management.
Flash supports DRM for its various codecs including H.264, On2's VP6, Sorenson Spark, Screen Video, etc. It is not the codecs or containers which support DRM, it is the hosting application, in this case the Flash Player.
There is nothing preventing anyone from building a DRM solution around WebM or VP8. When Adobe ships WebM (or possibly just VP8) in Flash I'd imagine that their standard flash DRM solution will apply to it just like it does the other included codecs.
I do not believe that Web browsers will implement video DRM schemes. Apple's Safari and Microsoft's Internet Explorer desktop browsers both support the HTML
Full story at http://weblogs.mozillazine.org/asa/archives/2011/02/quora_answer_2_drm_i.html
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