[Mp4-tech] about H.264/AVC standard document

[Gary Sullivan]

MG Li et al,
No, it means all macroblocks are frame macroblocks.
Best Regards,
Gary Sullivan
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	From: mp4-tech-bounces lists.mpegif.org [mailto:mp4-tech-bounces lists.mpegif.org] On Behalf Of Li.Mg [???]
	Sent: Wednesday, March 30, 2024 1:27 AM
	To: mp4-tech lists.mpegif.org
	Subject: [Mp4-tech] about H.264/AVC standard document
	Dear experts, 
	    I'm also confused about the case of MacroBlock to Slice group of 8.2.2.8 in ITU-T H.264 (2003/05) version.
	    8.2.2.8:
	    "Otherwise (frame_mbs_only_flag is equal to 0 and mb_adaptive_frame_field_flag is equal to 0 and field_pic_flag is
	     equal to 0), the macroblock to slice group map is specified by:
	    MbToSliceGroupMap[ i ] = mapUnitToSliceGroupMap[ ( i / ( 2 * PicWidthInMbs ) ) * PicWidthInMbs
	    + ( i % PicWidthInMbs ) ]"
	    when parameter : frame_mbs_only_flag is equal to 0 and mb_adaptive_frame_field_flag is equal to 0 and field_pic_flag is
	     equal to 0 --> it means this is a coded frame with all the MacroBlocks are field MarcoBlocks ?
	BR,
	MG Li
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	[Mp4-tech] about H.264/AVC standard document
	Gary Sullivan garysull windows.microsoft.com <mailto:mp4-tech%40lists.mpegif.org?Subject=%5BMp4-tech%5D%20about%20H.264/AVC%20standard%20document&In-Reply-To=> 
	Mon Jan 24 09:24:36 ESTEDT 2005 
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	With field_pic_flag equal to 0 and mb-aff turned off, I think you're talking about an ordinary frame.
	BTW you should get ahold of something more recent than G050r1.  That's from several iterations ago.
	-G.
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		From: mp4-tech-bounces lists.mpegif.org <http://lists.mpegif.org/mailman/listinfo/mp4-tech>  [mailto:mp4-tech-bounces lists.mpegif.org <http://lists.mpegif.org/mailman/listinfo/mp4-tech> ] On Behalf Of ???
		Sent: Monday, January 24, 2024 3:01 AM
		To: mp4-tech lists.mpegif.org <http://lists.mpegif.org/mailman/listinfo/mp4-tech> 
		Subject: [Mp4-tech] about H.264/AVC standard document
		hello,experts:
		     In h.264/AVC standard document(JVT-G050r1,Page 86) there is a paragraph about FMO decoding:
		    "Otherwise (frame_mbs_only_flag is equal to 0 and mb_adaptive_frame_field_flag is equal     to 0 and field_pic_flag is equal to 0), the macroblock to slice group map is specified     by:
		    MbToSliceGroupMap[ i ] = mapUnitToSliceGroupMap[ ( i / ( 2 * PicWidthInMbs ) ) *         PicWidthInMbs + ( i % PicWidthInMbs ) ]                  (8-27)"
		     who can tell me what's the picture type(frame or field or others) if "frame_mbs_only_flag is equal to 0 and mb_adaptive_frame_field_flag is equal to 0 and field_pic_flag is equal to 0"?
		     thanks!
		     ronggang
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