[MPlayer-users] Mencoder segfaults with DivX4

[Michael Niedermayer]

Hi

On Thursday 14 February 2002 13:05, Tim U. wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
>
> On Thu, Feb 14, 2002 at 03:06:41PM +0100, Michael Niedermayer wrote:
> > On Thursday 14 February 2002 12:00, Thomas Larsen wrote:
> > [...]
> >
> > > Below is the output from Mencoder.
> > >
> > > hest:/data # cat anden/*.vob | mencoder -oac copy -ovc divx4 -divx4opts
> > > br=700 -x 576 -y 433 -sws 1 -o anden.avi -pass 1 -
> >
> >                 ^^^^^^
> > divx4 seems to be buggy, it cant handle sizees which are not divisable
> > through 2
>
> Isn't it because MPEG codecs divide the picture into 16x16 blocks
> (or is it 32x16? or different for different MPEG versions or
> something..) anyway I always use multiples of 16 and never have
> any problems with that.
16x16
the trick is that it only displayes a smaller part of the 16x16 internal 
picture
try to encode with libavcodec, it can handle the odd sizes
although its better to use multiple of 16 for width & height ...

[...]

Michael