[MPlayer-users] roughly .25 second delay in playback of avi files

[Ed Sweetman]

I say avi files because I dont have any reliably in sync media files in 
other formats.

The only other video players i have to compare mplayer to is gxine and 
windows media player and vlc in windows (the windows players are on a 
different 32bit computer).   My box is running dual core athlon 64 in 
64bit mode. 
Kernel is 2.6.16-rc1 (though this has been going on in every kernel 
version i've tried since i made the box)

mplayer version is cvs (over the course of the previous weeks till now)
alsa playback, xv video output

I even tried the stream delay patch posted to the devel list and still 
no change.

The problem is, playback of media either encoded by mencoder or 
transcode or virtualdub is played back at about a quarter of a second 
off, almost always the audio precedes the video.  I played with 
different values of delay, and .25 seems to bring the audio back in sync 
with every one I tried that was out of sync.   Only a couple seem to be 
in sync by default, and it seems to be a fluke that it is, since they 
were encoded by the same encoder using the same settings and the same 
codec as the ones that are now out of sync.

The reason I believe this is an mplayer problem is that before i changed 
to a 64bit system, on my old athlon tbird, these videos were in sync, 
and right now, playing from the exact same copies, in windows (on 
another box) they are in sync and with gxine (same box as mplayer) they 
are in sync.  Only mplayer seems to be out of sync on most of the video 
files.  

I dont know what type of data could be useful, and the lack of anyone 
else reporting the problem is not promising.   I can provide any info 
required, but my experience playing with mplayer internals is lacking. 


I've attached two runs of video files, one in sync (actually the only 
one i've found so far to be in sync) and one of the out of sync ones, 
encoded by the same program.  It's not using rtc, because tvtime is, but 
this has no effect on the av sync problem.

Thanks in advance. 

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