[MPlayer-users] [BUG] DVD playback jerky with CVS (and ffmpeg assertion errors during 2-pass)

[Jack]

I have been noticing this with recent CVS as well.  But only on certain 
DVD's, with no noticeable pattern as to which dvd's will work and which 
won't. 

-lt. 

Jason Tackaberry wrote:

>I'm not sure if it's appropriate to report bugs with CVS, but I will
>anyway. :)  I'm experiencing extremely jerky DVD playback with MPlayer
>CVS from yesterday and today.  My last checkout before that was from
>2004-07-14 and it works fine.
>
>MPlayer often seems to be playing a several frames, then repeating one
>from a few frames back, and then continuing where it left off.  So this
>isn't a CPU issue, but seems to be a bug in the demuxer.
>
>With this bug, when doing a two-pass encode from DVD, MPlayer
>consistently barfs just at the end of the second pass:
>
>        mencoder: ratecontrol.c:618: ff_rate_estimate_qscale: Assertion
>        `picture_number<rcc->num_entries' failed.
>
>Here is the command I used to rip:
>
>for i in `seq 1 2`; do
>   nice mencoder dvd://1 -oac copy -vf crop=720:352:0:60,hqdn3d=2:1:3 -ovc \
>   lavc -lavcopts vcodec=mpeg4:vbitrate=1600:v4mv:mbd=2:trell:autoaspect:vmax_b_frames=2:vb_strategy=1:cmp=3:subcmp=3:mbcmp=3:qprd:cbp:vpass=$i \
>   -ofps 23.976 -o X2.avi
>done
>
>Such is life on the bleeding edge.  Hope this helps.
>
>Cheers,
>Jason.
>  
>
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