On 23.08.2015, Ahmad Samir wrote: > I am not sure what exactly is happening on your system, but I'd try > enabling MSE with h264, make sure these are set to true: > media.fragmented-mp4.enabled > media.fragmented-mp4.exposed > media.fragmented-mp4.ffmpeg.enabled > media.mediasource.mp4.enabled Thanks a lot for highly valuable information, you made my day! With these options enabled and webm disabled, I'm able to play both highres videos and all the other non-highres ones that didn't work. The blocker for those other videos was MSE & WebM VP9 being enabled. Now, Firefox uses MSE & H.264 and does exactly what I want it to do. Thanks again! -- 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