[MPlayer-dev-eng] libavcodec options incompatibility

[Michael Niedermayer]

Hi

On Thursday 05 August 2004 18:04, Giacomo Comes wrote:
> On Thu, Aug 05, 2004 at 05:14:29PM +0200, Michael Niedermayer wrote:
> > Hi
> >
> > On Tuesday 03 August 2004 19:06, Giacomo Comes wrote:
> > > I have been playing with different libavcodec options with mencoder and
> > > I have found the following problems.
> > >
> > > 1) qpel and ilme are mutually exclusive. With both mencoder doesn't
> > > work.
> >
> > known
> >
> > > 2) ( threads>=2 && cmp=3 ) || ( threads>=2 && subcmp=3 ) wont work.
> > >    note: precmp=3 is ok.
> >
> > please elaboarte about "wont work"
>
> This is the simplest command line:
> mencoder -oac copy -ovc lavc -lavcopts vcodec=mpeg4:qpel:ilme dvd://1
>
> mencoder start but after encoding 50 or more frames exits with:
> Segmentation fault
> The same happens with all other combination of options I'm used to give to
> mencoder.
> Running more tests, I have found source materials that don't
> cause mencoder to segfault immediately. Sometimes you have to wait many
> minutes before that happens. For the moment I have segfault only with DVD.
> PAL and NTSC.  With non dvd video it seems to work.
>
> second problem:
> mencoder -oac copy -ovc lavc -lavcopts vcodec=mpeg4:threads=2:cmp=3 dvd://1
> Again there is a segfault but now almost immediately. After the first or
> second frame. It happens with any source I have tested: DVD VCDmpeg real.
>
> If you need more details please ask and I will give you.
gdb output as described in our bugreportong docs, or upload some preferably 
short sample with which this can be reproduced

[...]
-- 
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