GNOME Bugzilla – Bug 561876
[pulseaudiosink] slow motion video
Last modified: 2009-01-09 23:23:52 UTC
I keep having a strange problem with Totem (using the Gstreamer backend). Every so often when I watch a movie, the video slows down to only a few frames per second, but audio is fine. This can happen spontaneously, but is easiest reproduced by pausing the movie for a long period (several minutes) and resuming playback. Restarting Totem doesn't help, I still get slow video and normal audio, but restarting pulseaudio gets everything back to normal. When this happens, pulseaudio starts using a lot more CPU than normal, it goes from 2-3% up to 18-19%. Usually this is where it shuts down automatically, so I'm now using "no-cpu-limit = yes". This is basically a repost of a bug report I made at pulseaudio.org[0], but since this only happens with totem, and nothing else using the pulsesink, I guess it belongs here. Note that compared to bug 515064, the pulseaudio server isn't down, playback with anything else (including paplay) works fine. 0. http://www.pulseaudio.org/ticket/402
Created attachment 123203 [details] Backtrace from totem when video is playing in slow motion
My guess is that the struggling Pulseaudio is causing video frames to be dropped, or something like that.
Created attachment 123353 [details] backtrace from totem I'm attaching a new backtrace as the previous one was lacking symbols.
I haven't experienced this bug for a while now. Since reporting, I have upgraded to Totem 2.25 (svn r5812 at the moment) and to linux 2.6.28-rc6. I'm not sure what fixed it, but it's probably unnecessary to keep the bug open. I will reopen if the bug appears again.