Comment Re:Is Media Source Extensions supported? (Score 1) 147
media.mediasource.enabled, media.mediasource.mp4.enabled, media.mediasource.webm.enabled, and media.mediasource.youtubeonly.
Everything but webm.enabled is defaulted to true in FF 37 Beta now. They were defaulted to false (except youtubeonly) in the later 36 Betas and 36 Final.