Avatar for Username

Hilfe durchsuchen

Vorsicht vor Support-Betrug: Wir fordern Sie niemals auf, eine Telefonnummer anzurufen, eine SMS an eine Telefonnummer zu senden oder persönliche Daten preiszugeben. Bitte melden Sie verdächtige Aktivitäten über die Funktion „Missbrauch melden“.

Learn More

Dieses Thema wurde archiviert. Bitte stellen Sie eine neue Frage, wenn Sie Hilfe benötigen.

Poor YouTube HTML5 video performance in Firefox - fine in IE

optomo84
optomo84
more options

I have a quite low end system set up, so I'm not expecting miracles from it, but there seems to be some problems playing Youtube videos on Firefox.

If I load a video on Internet Explorer, it will play fine, even on 1080p with CPU usage of about 20%. Firefox often exhibits problems playing videos.

If I launch Firefox immediately from signing in, the videos will play fine. If I navigate to another video, there will usually be dropped frames and high CPU usage.

I understand that Internet Explorer will use the h.264 codec which is GPU accelerated whilst FF will use a more CPU intense task, but that doesn't really explain why sometimes the videos will play fine and others, it won't.

I have tried on a completely clean install of Firefox, so it will unlikely be extensions, profiles or add-ons. I have then changed the timing of the sessions saving and disabled smooth scrolling as advised elsewhere, with no success.

All help gratefully received.

I have a quite low end system set up, so I'm not expecting miracles from it, but there seems to be some problems playing Youtube videos on Firefox. If I load a video on Internet Explorer, it will play fine, even on 1080p with CPU usage of about 20%. Firefox often exhibits problems playing videos. If I launch Firefox immediately from signing in, the videos will play fine. If I navigate to another video, there will usually be dropped frames and high CPU usage. I understand that Internet Explorer will use the h.264 codec which is GPU accelerated whilst FF will use a more CPU intense task, but that doesn't really explain why sometimes the videos will play fine and others, it won't. I have tried on a completely clean install of Firefox, so it will unlikely be extensions, profiles or add-ons. I have then changed the timing of the sessions saving and disabled smooth scrolling as advised elsewhere, with no success. All help gratefully received.

Alle Antworten (5)

FredMcD
FredMcD
more options

check this:

  • see if there are updates for your graphics drive drivers

https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

  • disable protected mode in the Flash plugin (Flash 11.3+ on Windows Vista and later)

https://forums.adobe.com/message/4468493#TemporaryWorkaround

  • disable hardware acceleration in the Flash plugin

https://forums.adobe.com/thread/891337 See also:

optomo84
optomo84 Fragesteller
more options

Thanks for your reply, I've tried all of that.

Unfortunately, not much of that is appliciable to my situation. Video performance with Flash is absolutely fine. If I use one of the Firefox plugins to force YouTube to use the Flash player, video up to 1080p is absolutely fine.

If I use the HTML5 player, the CPU usage is sky high and the video is unplayable.

Internet Explorer 11 using the HTML5 player plays everything perfectly with minimal CPU usage, so it would suggest that something is different in Firefox's implementation which is causing poorer playback. I'd really rather not use IE for anything other than installing another browser, so I'd really like to get to the bottom of this!

Thanks for your help so far :)

FredMcD
FredMcD
more options

I've called the big guys to help you. Good luck.

optomo84
optomo84 Fragesteller
more options

Thanks for your help :)

TheCheetahwings
TheCheetahwings
more options

I had this issue as well! Posted about it here: https://support.mozilla.org/en-US/questions/1072060

I hope that this is solved promptly, especially with the possibility of flash being phased out. I've tried just about everything to fix this.