[MPlayer-users] MP4 file(s) stutter at a certain point

[Uoti Urpala]

On Fri, 2010-01-01 at 20:06 +0200, Nezmer at allurelinux.org wrote:
> I've been facing a weird issue with some mp4 files. The playback starts
> to stutter(plays discontinuously as If CPU or IO is maxed out) at
> a certain point. This happens with mplayer-mt linux x86_64 and with
> mplayer in a 32bit chroot. Not all files suffer from this. The files
> that do suffer at certain points. The files play just fine with ffplay
> Totem(gstreamer) and VLC.
> 
> Today I decided to save logs.
> 
> With -msglevel all=5
> http://pastebin.com/f4bce5249

That log shows problems a lot worse than "stutter" - the status line
values indicate a 18 second desync between video and audio due to
playback being too slow!

The problem is that you've specified -cache either on the command line
or in config files. MPlayer's cache mechanism has problems with mp4/mov
files because playing them involves a lot of seeking around in the file
and the cache doesn't handle that well. Don't enable cache by default.