This is Firefox 52.0.2 32 bit ESR, Solaris 10U13 Sparc, on a 2.75 GHz. quad core Sparc VII Sun M3000 from a Sun Ray 2fs thin client.
ffmpeg, libx264 and libx265 have all … (read more)
This is Firefox 52.0.2 32 bit ESR, Solaris 10U13 Sparc, on a 2.75 GHz. quad core Sparc VII Sun M3000 from a Sun Ray 2fs thin client.
ffmpeg, libx264 and libx265 have all been installed from https://www.opencsw.org/get-it/packages/. Flash 11.2 r202 is also installed.
A look at https://www.youtube.com/html5 shows all six boxes under "What does this browser support?" are checked. The box "The HTML5 player is currently used when possible" is also checked.
I can play some videos fine, for example this H264 test page: http://www.html5videoplayer.net/html5video/mp4-h-264-video-test/
(Actually, there's no sound but this is a Sun Ray audio issue, not Firefox).
All three of the test videos here: https://www.quirksmode.org/html5/tests/video.html also play OK (or they did before the author of this page removed the files).
All three test videos on this page also play OK: https://tekeye.uk/html/html5-video-test-page
Some Youtube videos also play fine, like this one: https://www.youtube.com/watch?v=fyuWDANi7Y0
or this one: https://www.youtube.com/watch?v=H77m14Du9O0
The right-click "stats for nerds" shows they use avc1 and mp4a codecs.
But any video that uses vp9 and opus codecs does not play. It just sits there with a spinning circle on a black background forever. And that seems like the vast majority of videos on Youtube.
In fact avc1/opus videos on Youtube also fail to start. This happens even with all FF add-ons disabled.
Oddly on cnbc.com, the small preview window videos play OK but when clicked to full-size, they just give the spinning circle. (I can't tell what format those are).
Is there any way to get these opus videos to play?