[M4IF Technotes] max obj in SP

[Gary Sullivan]

Right idea.  But actually I think the maximum total MBs is given by the
max vcv buffer size column in Table N-1, not the typcial session size
column (one is just information about what is expected to be typical and
the other is the maximum allowed).
For example, in Simple profile level 1, you can send 4 "simple visual
objects" (i.e., 4 rectangular video streams) - each of which is 5
macroblocks wide and 4 macroblocks tall.  The total would then be 80
macroblocks, which fits within the 99 macroblock maximum.
In Simple profile, the "max" and "typical" sizes are the same.  But in
some others they are not.  For example in Core profile levels 1 and 2.
-Gary
+> -----Original Message-----
+> From: Rob Koenen [mailto:rob.koenen   m4if.org] 
+> Sent: Friday, January 31, 2024 11:09 AM
+> To: 'Yong wang'; Technotes   lists.m4if.org
+> Subject: RE: [M4IF Technotes] max obj in SP
+> 
+> 
+> You can have 4 smaller objects, the total surface of which would be
+> that of the 'typical session size' at max.
+> 
+> You can use that on PCs or on devices where there is a picture in the
+> background
+> 
+> > But, since it treats the whole
+> > frame as one object, there is only one object
+> > available. 
+> 
+> I don't understand what you mean by this.
+> 
+> Rob
+> 
+> > -----Original Message-----
+> > From: Yong wang [mailto:yongwang_2001   yahoo.com] 
+> > Sent: Friday, January 31, 2024 11:03 AM
+> > To: Technotes   lists.m4if.org
+> > Subject: [M4IF Technotes] max obj in SP
+> > 
+> > 
+> > Dear erperts,
+> > 
+> > I noticed that the Max. # objects allowed in MPEG4
+> > visual  SP   L1-3 is 4. But, since it treats the whole
+> > frame as one object, there is only one object
+> > available. How could Max. # objects be 4? Could
+> > anybody knidly answer my question? Thnaks a lot!
+> > 
+> > Yong 
+> > 
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