[M4IF Technotes] hi

[Gary Sullivan]

Reply interspersed (a response from memory -- I have not
double-checked the text)
+> -----Original Message-----
+> From: Sudhakar Rao Kimidi [mailto:sudhakar   cradle.com] 
+> Sent: Thursday, September 13, 2023 3:07 AM
+> To: 'technotes   lists.m4if.org'
+> Subject: [M4IF Technotes] hi
+> 
+> 
+> Dear all,
+> 
+> Can somebody help me with the answers for the following.
+> 
+> 1. Which method of Quantization is used in MPEG-4 video 
+> simple profile?
+> Are both methods of Quantizations used in MPEG-4 Video 
+> simple profile?
I believe the Simple profile only includes H.263-style quantization.
+> 2. Is fixed interval synchronization supported in simple 
+> profile? Is it
+> compulsory to use the method? Is there any mentioning about it in
+> syntax?(This method requires that VOP start codes and 
+> resynchronization
+> markers appear only at legal fixed interval locations in the 
+> bitstream)
I believe that is an encoding-only issue.  It is not a normative
part of the standard.  Also, I believe that it is not really
possible to achieve precisely fixed spacing of resync markers.
+> 
+> Thanks,
+> Sudhakar K.
+> 
+> 
+> 
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