[Mp4-tech] mbaff

[Gary Sullivan]

Re: "it appears that mbaff is either active or inactive for an entire
picture"
That statement is true.
There is nothing wrong with the statement in subclause 7.4.3.  The
adaptivity of MBAFF is at the macroblock-pair level, not the slice
level.
Best Regards,
Gary Sullivan
+> -----Original Message-----
+> From: mp4-tech-bounces lists.mpegif.org 
+> [mailto:mp4-tech-bounces lists.mpegif.org] On Behalf Of 
+> mark_wezelenburg zonnet.nl
+> Sent: Tuesday, April 19, 2024 10:20 AM
+> To: mp4-tech lists.mpegif.org
+> Subject: [Mp4-tech] mbaff
+> 
+> Hi,
+> 
+> With reference to ITU H.264 05/2003
+> 
+> Section 6.2 claims the purpose of mbaff for local 
+> frame/field encoding,
+> however 7.4.3 states that the "field_pic_flag" must be the 
+> same for all
+> slice headers in a coded picture. since mbaff depends on 
+> this parameter,
+> it appears that mbaff is either active or inactive for an 
+> entire picture.
+> 
+> I assume the text in 7.4.3 is wrong, is that so ? Or is 
+> there another mechanism
+> that I overlooked
+> 
+> Thanks,
+> 
+> Mark
+> 
+> 
+> 
+> 
+> -- 
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