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Xenphor

Member

Registered: 2011-07-01

Posts: 47

HTML5/h264, intel video with gst 1.0 in Firefox 30 100% cpu usage

I'm using a Chromebook Acer c720 and just tried to playback a video in youtube but found it extremely choppy, using 100% of my CPU. The same thing did not happen before when using FF 29 and VP8 video without gstreamer. Also, I installed gst-vaapi hoping to get VAAPI acceleration but that obviously is not working because the standalone gstreamer player will only consume around 7% CPU playing the same video.

I also noticed increased CPU usage to about 50% when using gstreamer 0.10 on FF29, but I assumed that was because it did not support hardware acceleration. Again that's worse performance than without gstreamer playing any vp8 codec video. Somehow it got even worse it seems.

edit: also same thing happens on vimeo

Last edited by Xenphor (2014-06-11 13:57:58)

skierpage

Member

Registered: 2014-06-12

Posts: 1

Re: HTML5/h264, intel video with gst 1.0 in Firefox 30 100% cpu usage

I use Ubuntu but this just happened to me since updating to Firefox 30.  Check output of `top -H`. If it shows mpegaudioparse* thread(s) at 90%+ of CPU, it could be a conflict between Firefox 30's new default use of gstreamer and Totem's Mozilla plug-in. Check for the latter in about:plugins.  If you have it, then try removing the plugin (I think it's named "totem-plugin" in Arch), killing the firefox threads, and restarting Firefox. The Ubuntu bug is https://bugs.launchpad.net/ubuntu/+sour … ug/1304351

Hope this helps.

Xenphor

Member

Registered: 2011-07-01

Posts: 47

Re: HTML5/h264, intel video with gst 1.0 in Firefox 30 100% cpu usage

Well nothing shows up in about:plugins so I'm pretty sure I don't have anything totem related. I'm running mostly just a stock lxde environment with only vlc for playing media. I did take a screenshot of my top result though:

Last edited by Xenphor (2014-06-12 22:58:58)