On Sunday, April 26, 2015 1:03:30 PM »Q« wrote: > On Sun, 26 Apr 2015 16:49:27 +0000 > Alan Mackenzie <[email protected]> wrote: > > > On Sun, Apr 26, 2015 at 11:23:53AM -0500, »Q« wrote: > > > > Alan, I think Firefox relies on gstreamer for at least some of its > > > HTML5 playback capability, so USE="-gstreamer" may be at the root of > > > the issue. On the YouTube HTML5 page, do you get a "What does this > > > browser support?" section? If so, what does it say? > > > > Of the six boxes there, I have ticks (?check marks?) on > > o - HTMLVideoElement > > o - WebM VP8 > > I have exclamation marks on all the others, namely > > o - H.264 > ^^^^^ > This is the only one which I have but you don't, and HTML video plays ok > for me with Firefox 37.0.2. > > > o - Media Source Extensions > > o - MSE & H.264 > > o - MSE & WebM VP9 > > The MSE ones are disabled in all Firefoxen for now. They tried > enabling support recently, but uncovered so many bugs they had to > disable it right away. > > > It's frustrating that "HTML5" isn't mentioned in that list of six. > > HTML5 video encompasses several formats. "HTMLVideoElement" checked > just means the browser will recognize <video> elements, and the others > are various formats. > > > I'll take your tip and try rebuilding with gstreamer enabled. Thanks! > > I hope it works! I just tried looking at which gst-plugins I have > installed, to figure out which might give H.264 support, but I can't > make sense of it. >
Do you have the "OpenH264 Video Codec provided by Cisco Systems" firefox add-on installed (I think it comes with firefox). I have it but I still don't have H.264 checked on that page and I can't play some H.264 videos like this one https://www.microsoft.com/microsoft-hololens/en-us. If you have it, do you mind disabling it to check if that's where you're getting H.264 support from? I have no problems playing youtube videos without it (both HTML5 and Flash) and I don't have gstreamer enabled on firefox. -- Fernando Rodriguez
