Hi,
I'm having choppy video playback in mplayer, vlc and also in Firefox
on YouTube and the like. I notice a video freeze every 1-2 seconds or
so, then the video snaps back to where it should be. The audio sounds
fine. Mplayer often spits out a warning message[1].
I also noticed that typing into forms (like an email in Gmail) in
Firefox, after Firefox has been running a few hours also suffers from
this freeze every 1-2 seconds.
A typical workload is Gnome, Firefox, Claws-Mail, Pidgin, Tomboy,
xmms2 and a bunch of terminals with SSH sessions and irssi.
I have an Intel Core 2 Duo 2GHz with 2 GB of RAM, so this shouldn't be
happening. I'm running kernel 2.6.23-gentoo-r3. I don't remember when
exactly this started, I don't really watch video too often.
Could it be the scheduler with which my kernel is compiled? Currently
it's set to "Preemptible Kernel (Low-Latency Desktop)".
Any ideas? What to start tweaking with?
Thanks for any help,
Mike
[1] Mplayer warning message:
************************************************
**** Your system is too SLOW to play this! ****
************************************************
Possible reasons, problems, workarounds:
- Most common: broken/buggy _audio_ driver
- Try -ao sdl or use the OSS emulation of ALSA.
- Experiment with different values for -autosync, 30 is a good start.
- Slow video output
- Try a different -vo driver (-vo help for a list) or try -framedrop!
- Slow CPU
- Don't try to play a big DVD/DivX on a slow CPU! Try some of the lavdopts,
e.g. -vfm ffmpeg -lavdopts lowres=1:fast:skiploopfilter=all.
- Broken file
- Try various combinations of -nobps -ni -forceidx -mc 0.
- Slow media (NFS/SMB mounts, DVD, VCD etc)
- Try -cache 8192.
- Are you using -cache to play a non-interleaved AVI file?
- Try -nocache.
Read DOCS/HTML/en/video.html for tuning/speedup tips.
If none of this helps you, read DOCS/HTML/en/bugreports.html.
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