FF ESR 52 can't play some HTML5 Youtube videos

[tunayx]

Issue has started few day ago. I tried it clean FF profile and clean portable version but problem continues. FF ESR 52 plays mos HTML5 videos but not some as I put the links below. When I troubleshoot via Youtube context menu it shows this:


https://www.youtube.com/watch?v=_Q8CpaejCk8
https://www.youtube.com/watch?v=BVL6AjybCZ0

[patclash]

Hi,
look at this :
http://www.msfn.org/board/topic/175591- ... out-flash/

[James]

Your UA shows you have the old EOL WinXP. Mozilla/5.0 (Windows NT 5.1; rv:52.0) Gecko/20100101 Firefox/52.0

Microsoft only supports Windows Vista and later with the codecs needed to fully use the HTML5 player.

There may be some workarounds to try as mentioned in above link.

Another option is to dual boot with a light 32-bit Linux distro (Xubuntu among other options) and have packages like FFmpeg installed and then you can fully support the HTML5 player in Firefox.

[dickvl]

See also:
http://forums.mozillazine.org/viewtopic ... &t=3031400

[tunayx]

patclash's link resolve the issue. Thank you very much.