[M4IF Technotes] Current Part 10 Details

[Gary Sullivan]

Levels (in all profiles) are summarized with example typical format
support as follows
* Level 1=QCIF   15
  Intermediate Levels 1.1=CIF   7.5 and 1.2=CIF   15
* Level 2=CIF   30
  Intermediate Levels 2.1=HHR and 2.2
* Level 3=SDTV
  Intermediate Levels 3.1 and 3.2
* Level 4=HDTV
* Level 5=SHDTV (1920x1088x60p)
I don't think I know of any good up-to-date reference material
other than the draft standard itself.
Best Regards,
Gary Sullivan
+> -----Original Message-----
+> From: Ben Waggoner [mailto:ben   interframemedia.com] 
+> Sent: Sunday, September 22, 2023 10:45 PM
+> To: Gary Sullivan; Technotes   lists.m4if.org
+> Subject: Re: [M4IF Technotes] Current Part 10 Details
+> 
+> 
+> Gary,
+> 
+>     Excellent, thanks.  It looks pretty much the same as 
+> what was presented
+> at WEMP, with the addition of Profile X.
+> 
+>     Do you have Level breakdowns as well?
+> 
+>     Is there a good on-line reference for all this.
+> 
+> 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
+> 
+> 
+> 
+> 
+> on 9/22/02 22:39, Gary Sullivan at garysull   microsoft.com wrote:
+> 
+> > 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
+> 
+> 
+>