[M4IF Technotes] Current Part 10 Details

[Gary Sullivan]

AVC / H.264 Profile Summary:
Three profiles now: Baseline, Main, and X
Baseline Profile
* I and P picture types (not B)
* In-loop deblocking filter
* Interlace (level-dependent, levels 2.1 and above)
* 1/4-sample motion compensation
* Tree-structured motion segmentation down to 4x4 block size
* VLC-based entropy coding
* Some enhanced error resilience features
  - Flexible macroblock ordering/arbitrary slice ordering
  - Redundant slices
Main Profile
* All Baseline features except enhanced error resilience features
* B pictures
* Adaptive weighting for B and P picture prediction
* CABAC
* Adaptive block-size transforms
* MB-level frame/field switching
Profile X
* All Baseline features
* B pictures
* Adaptive weighting for B and P picture prediction
* More error resilience: Data partitioning
* SP/SI switching pictures
Best Regards,
Gary Sullivan
+> -----Original Message-----
+> From: Ben Waggoner [mailto:ben   interframemedia.com]
+> Sent: Sunday, September 22, 2023 8:57 PM
+> To: Technotes   lists.m4if.org
+> Subject: [M4IF Technotes] Current Part 10 Details
+>
+>
+> Folks,
+>
+>     Where is the best place to get a description of the
+> current features and
+> status of MPEG-4 Part 10 (aka H.26L)?  I don't need a full
+> spec, but I'd
+> like to know at least what tools are being used in which profiles.
+>
+>
+> Ben Waggoner <http://www.benwaggoner.com>
+> Compressed Video Consulting, Training, and Encoding
+>
+> My Book:            http://www.benwaggoner.com/books.htm
+> Cleaner Tutorial:   http://www.saferseas.com/navseries/adclean.html
+> Cleaner e-book:    
+> +> http://www.ebooktech.com/shopping/shopexd.asp?+> id=279
+>
+>
+> Compression Books:  http://www.benwaggoner.com/bookshelf.htm
+>
+>
+>
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