FW: [M4IF Interop] FW: [M4IF Technotes] Question on DecodeSpecifi cInfo

[Rob Koenen]

-----Original Message-----
From: Michael Ropert [mailto:mropert   envivio.fr]
Sent: Tuesday, December 04, 2023 0:34
To: Rob Koenen; M4IF Interop (E-mail)
Subject: RE: [M4IF Interop] FW: [M4IF Technotes] Question on
DecodeSpecificInfo
Hi,
According to the visual  standard (annex K),
a DSI is composed on several elements:
- VisualObjectSequence,
- VisualObject,
- VideoObject,
- VideoObjectLayer.
So what I understand, is that VisualObjectSequenceHeader must be
written in the DSI.
Maybe I misunderstood your question ?
Michael ROPERT. 
www.envivio.com <http://www.envivio.com> 
-----Message d'origine-----
De : interop-admin   lists.m4if.org [mailto:interop-admin   lists.m4if.org]De
la part de Rob Koenen
Envoy? : lundi 3 d?embre 2001 18:22
? : M4IF Interop (E-mail)
Objet : [M4IF Interop] FW: [M4IF Technotes] Question on DecodeSpecificInfo
Question you interop guys must be able to answer!
Rob
-----Original Message-----
From: S.G.Chang [mailto:watanka   samsung.com]
Sent: Monday, December 03, 2023 14:13
To: M4IF
Subject: [M4IF Technotes] Question on DecodeSpecificInfo
Dear experts and members.
I have a question on "DecodeSpecificInfo" in MPEG-4 system.
As you know, the "DecoderSpecificInfo" in MPEG-4 system is needed to
initialize MPEG-4 decoder.
[ISO/IEC SG29/WG11, N4350, pp 478] says that VisualObjectSequence is
transmitted explicitly in each 
DecConfigDecsr.DecSpecificInfo.  
This question is caused by Envivio player. According to our experiments
Envivio player can't decode 
"VisualObjectSequenceHeader".
But i can't sure that "VisualObjectSequenceHeader" must be included in
"DecodeSpecificInfo" or not. 
If you have information on this, please know me.
S.G.Chang
++++++++++++++++++++++++++++++
    Seung-Gi Chang, Ph.D.                 
    Senior Engineer                             
    Mobile Solution Team,  DM Lab,    
    SAMSUNG Electronics Co             
++++++++++++++++++++++++++++++
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