[Mplayer-advusers] Crash report, 1 of 3

[Michael Niedermayer]

Hi

On Wednesday 31 December 2003 22:20, The Wanderer wrote:
> The Wanderer wrote:
> > I've reported this one before, on the -users list, but as that was in
> > August and the file still crashes I'm reporting it again here. My
> > comments from that report are reproduced below, along with the gdb
> > output based on latest MPlayer CVS.
> >
> > ==
> > The crash, which takes the external form of a signal 11, occurs at
> > 37.1 seconds into the file, but I can use -ss to start anywhere up to
> > 52 seconds in; starting at or past the crash point produces at best
> > multiple "MPEG stream reached EOF" messages, and at worst an even
> > crazier (i.e. more error flood) version of the crash.
> >
> > The weird thing about the crash is the nature of the error messages -
> > it looks as if MPlayer thinks the file is an encrypted VOB, rather
> > than a normal MPEG file. Also, libmpdvdkit is reported as enabled
> > during configure, so presumably even if this had been such a VOB it
> > would have ben decryptable. (I say "presumably" because, since I
> > presently lack a DVD drive, I have no easy way of finding out.)
> > ==
> >
> > (gdb) run -v /home/wanderer/tmp/appearlaser_debug-mplayer.mpeg
>
> With the December 31st CVS (the previous output was based on CVS from
> the 27th), appending -ss 42 to the above command results in a
> considerably crazier version of the crash; it plays on with scrambled
> video and completely screwy audio for a few seconds, then crashes as
> before, but with A:10901.2 V:11528.1.
>
> MEncoder produces a segfault on the same file, at presumably the same
> point, which it reports to be approximately 85% of the way through.
>
> Possibly none of this information is useful, but I'd like to keep up on
> this if I can manage it... if no one else is interested in getting these
> fixed, I am, but I don't understand enough of any of MPlayer,
> audio/video encoding, and C to be able to give it a clear shot myself.
> (If I *did*, I'd probably also be working on OpenDML support by now...)
-vc ffmpeg1 doesnt crash with it anymore, libmpeg2 still does, but thats a 
different bug, ur gdb dump clearly showed that u used ffmpeg before for mpeg 
decoding

-- 
Michael
level[i]= get_vlc(); i+=get_vlc();		(violates patent EP0266049)
median(mv[y-1][x], mv[y][x-1], mv[y+1][x+1]);	(violates patent #5,905,535)
buf[i]= qp - buf[i-1];				(violates patent #?)
for more examples, see http://mplayerhq.hu/~michael/patent.html
stop it, see http://petition.eurolinux.org & http://petition.ffii.org/eubsa/en