Hi, F22, latest Firefox 40. With standard configuration, I can't play any highres video on Youtube (720 or 1080p). When setting media.mediasource.enabled media.mediasource.webm.enabled to "true" as recommended by the Mozilla Community, highres videos play just fine. BUT some other videos now do not play any longer. In particular, when setting media.mediasource.webm.enabled to "false", those non-working videos work again. But then, no highres is possible. Example: https://www.youtube.com/watch?v=kFzN6j6FjJc WTF?! -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org