[M4IF Technotes] Question on MoMuSys FGS Reference Software

[Weiping Li]

Andrea,
The current FGS in MPEG-4 is only defined to work with rectangular video
sequences. The combination of FGS with arbitrarily shaped objects is not
in MPEG-4. That's why the reference software does not work in this case.
Best regards,
Weiping
----- Original Message ----- 
From: <egoam   libero.it>
To: <technotes   lists.m4if.org>
Sent: Tuesday, September 03, 2023 1:55 AM
Subject: [M4IF Technotes] Question on MoMuSys FGS Reference Software
> Hi all,
> 
> I'm a student at the University of Rome3 and I'm working on MPEG-4. In 
> particular I'm interested in object based FGS. 
> I'm using MoMuSys FGS Reference Software and I can encode and decode 
> successfully rectangular sequences, but I have problems when I use 
> sequences and binary alpha planes. I manage to encode successfully a 
> video object but when I try to decode the bistreams I receive the 
> message:
> 
>     Initialize FGS data array...
> 
>     ERROR(ecalloc): Wrong size: <=0
> 
> Could someone help me?
> 
> Thanks in advance,
> 
>           Andrea Ambrosioni   
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