[MPlayer-users] ignoring overflow at 1 11

[Michael Niedermayer]

Hi

On Saturday 03 August 2002 01:41, Arpi wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Hi,
>
> > i used the following:
> > mencoder -oac copy -ovc lavc -lavcopts
> > vcodec=mpeg4:vbitrate=1000:vhq:vpass=1 x.avi -o /dev/null
> >
> > so mencoder started and begun showed that normal line, like:
> >
> > Pos:  10.3s    248f ( 0%)  33fps Trem: 115min 250mb  A-V:0.042 [109:96]
> >
> > but after that at one place he showed this;
> >
> > ignoring overflow at 1 11
> >
> > after that he simply continued...
> >
> > so what does that message ignoring... mean?
>
> donno
> mencoder doesn't have such message, it probably comes from the codecs, lavc
lavc

> or lame
>
> grep shown it in msmpeg4.c:
>              fprintf(stderr, "ignoring overflow at %d %d\n", s->mb_x,
> s->mb_y);
>
> so 1 11 are x;y coordinates
> but dunno what does it really mean
its a weird feature of msmpeg4 which saves about 1bit per gb or so by not 
using a correct "last" vlc code but instead encoding an overflow, i have 2 
files which use this

> nor that what does msmpeg4 do when you selected iso mpeg4
decoding msmpeg4, encoding mpeg4 i guess

[...]

Michael