[Mp4-tech] what the opensource about mpeg-4' encoder and decoder

[tim huang]

thanks for gouveia
i want to find some opensource that fully compliant with ISO/IEC 14496-2.
are xvid is fully compliant with ISO/IEC 14496-2? There are many people talk about divx, Is divx fully compliant with ISO/IEC 14496-2? how about opendivx and ffmpeg.
if i want to migrate it to dsp,how can i begin?
tim.huang
4.26
----- Original Message Follows -----
> 
> 
>     hi ..all
>     
>     i am studying mpeg-4,and i want to find some
> opensource to use.
>     
>     i search from internet,and find the opensource about
> mpeg-4 are below:
>     
>     mpegip, hdoc264,gpac,ffmpeg,xvid
>     
>     in these opensource, mpegip have full function include
> encoding,decoding,transform, but it used xvid not the
> standant of MPEG-4;
xvid respects the iso/iec 14496-2 in a certain profile and
level. What do you mean?
you want a source code that implements all the bitstream
sintaxe (i.e. all MPEG-4 features)? 
>hdoc264 only include decoding and
> encoding, gpac is only include system fuction.
> 
>     if i want to  write a full decoder and encouder like
> realplay and realproduce
>,an they used MPEG-4 visual 
> iso/iec 14496-2 or h.264, how can i make use of
> opensource?
Well, I don't completly understand your question, but you
could use (for example)
the xvid for implementing the Simple Profile, and Advanced
Simple profile, and
add the functionalities that you desire. Wath I'm saying is
that you can use the
open source code available to serve a a base of what you
want to develop, obviously :)
>     
>     and how are you use the vm provided by mpeg(MoMuSys
> and microsoft)? can i word base on it.
> 
>     i didn't know how can i start, please help me.
> 
>     thanks in advance.
> 
>     tim.huang 
> 
>

I would like to help you more but I really don't get what
your real problem is, try to 
explain better.
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