[XviD-devel] the compatiblity between xvid and MPEG-4 visualstandard

Michael Militzer michael at xvid.org
Sat Sep 17 11:00:02 CEST 2005


rlancelot:

I've just performed a quick test: I encoded the akiyo sequence with 
xvid_encraw using exactly the options you specified and then decoded this 
stream with MS FDAM1-2.3-001213 - this went all fine. 

Which version of the MS ref software did you use? Did you do anything with
the xvid_encraw output before feeding it into fdam?

Regards,
Michael


Quoting Luca Piccarreta <piccarre at elet.polimi.it>:

> mmmhhh....
> rlancelot said xvid is not compatible with
> ref sw from Microsoft, not with WMV....
> a little bit of patience and debugging should
> show what's wrong, perhaps the sequence header
> (VO, VOL, VOS) are not properly written....
> because xvid *must* be compatible with MS
> ref sw!
> the structure should be kind of
> 00 00 01 B0 .... VOS header
> 00 00 01 0x ... VO header
> 00 00 01 20.... VOL header
> 00 00 01 B6... VOP
> 00 00 01 B6... VOP
> ...
> ...
> 
> sorry for the hurried answer, I'm sleepy.
> Luca.
> ----- Original Message ----- 
> From: "Dark Sylinc" <dark_sylinc at yahoo.com.ar>
> To: <xvid-devel at xvid.org>
> Sent: Saturday, September 17, 2005 1:41 AM
> Subject: Re: [XviD-devel] the compatiblity between xvid and MPEG-4 
> visualstandard
> 
> 
> rlancelot:
>   As far as I know, MS codec does NOT complain with
> MPEG-4 ISO standards.
> 
> Dark Sylinc
> 
>  --- rlancelot <Rlancelot at sohu.com> escribió:
> 
> > Hi,Experts
> >
> > I encode an standard test sequence
> > akiyo(qcif,yuv420,300frames) with xvid encoder
> > the options are:
> > :-type 0 -w 176 -h 144 -max_key_interval 5
> > when I try to decode the encoded xvid bitstream with
> > MPEG-4 visual reference codec developed by
> > microsoft,it runs wrong from the starting
> > Does it the problem of MS's codec or I set the wrong
> > options of xvid encoder£¬or the xvid does not
> > conform the MPEG-4 Visual's bitstream format?
> > > _______________________________________________
> > XviD-devel mailing list
> > XviD-devel at xvid.org
> > http://list.xvid.org/mailman/listinfo/xvid-devel
> >
> 
> 
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