[Cin] libaom 3.2.0

[Andrew Randrianasulu]

On Tuesday, October 26, 2021, Phyllis Smith via Cin <
cin at lists.cinelerra-gg.org> wrote:

> Andrew, thanks so much for keeping up on new releases (including HV which
> I have already downloaded).
> When I boot ubuntu 16 to create the 10/31 release, I will take time to
> test libaom update and hopefully check that in in November.
> I do not plan on upgrading for the dot release of ffmpeg -- that is 4.4.1
> -- not worth the hassle. OK?
>

well, I guess if there is no errors in decoding/encoding/seeking  with
current 4.4 - then this update is not absolutely needed? I guess most of
concerns with specially broken input  files comes from security/crashing
standpoint, and this problem more pronounced with direct network input,
something we do not do (yet?) inside cin.... Anyway, in theory you can make
megapatch from git between 4.4 and 4.4.1 and apply it first and our other
patches on top of this.. (lesser binary difference compared to
deleting/adding new tarball) - even just as exercise in patching  :-) but
again all this fun better wait for next month, realising we are close to
next monthly release and still have fade dissolve bug open...

>
> On Tue, Oct 26, 2021 at 3:52 AM Andrew Randrianasulu via Cin <
> cin at lists.cinelerra-gg.org> wrote:
>
>> https://aomedia.googlesource.com/aom/+/refs/tags/v3.2.0/CHANGELOG
>>
>> ---
>> This release includes compression efficiency and perceptual quality
>>   improvements, speedup and memory optimizations, as well as some new
>>   features.
>>   - New Features
>>     * Introduced speeds 7, 8, and 9 for all intra mode.
>>     * Introduced speed 10 for real time mode.
>>     * Introduced an API that allows external partition decisions.
>>     * SVC: added support for compound prediction.
>>     * SVC: added support for fixed SVC modes.
>>   - Compression Efficiency Improvements
>>     * Intra-mode search improvement.
>>     * Improved real time (RT) mode BDrate savings by ~5% (RT speed 5)
>>       and ~12% (RT speed 6). The improvement was measured on the video
>>       conference set.
>>     * Improved real time mode for nonrd path (speed 7, 8, 9): BDrate
>>       gains of ~3-5%.
>>     * Rate control and RD adjustments based on ML research in VP9.
>>       Gains of ~0.5-1.0% for HD.
>>   - Perceptual Quality Improvements
>>     * Added a new mode --deltaq-mode=3 to improve perceptual quality
>>       based on a differential contrast model for still images.
>>     * Added a new mode –deltaq-mode=4 to improve perceptual quality
>>       based on user rated cq_level data set for still images.
>>     * Weighting of some intra mode and partition size choices to better
>>       manage and retain texture.
>>   - Speedup and Memory Optimizations
>>     * Further improved 2-pass good quality encoder speed:
>>       o Speed 2 speedup: 18%
>>       o Speed 3 speedup: 22%
>>       o Speed 4 speedup: 37%
>>       o Speed 5 speedup: 30%
>>       o Speed 6 speedup: 20%
>>     * Optimized the real time encoder (measured on the video conference
>>       set):
>>       o RT speed 5 speedup: 110%
>>       o RT speed 6 speedup: 77%
>>   - Bug Fixes
>>     * Issue 3069: Fix one-pass mode keyframe placement off-by-one error.
>>     * Issue 3156: Fix a bug in av1_quantize_lp AVX2 optimization.
>> ---
>>
>> I quickly re-packed .tar.gz into xz and renamed libaom patches
>> accordingly. It seems to work with ffmpeg-4.4.
>>
>> Phyllis, can you test (may be next month?) if libaom-3.2.0 still works on
>> both new and old distros (as you use them for appimage build)?
>>
>> Also, ffmpeg 4.4.1 was released - mostly bugfixes from fuzzers, it seems,
>> but also few changes in util
>>
>> https://git.ffmpeg.org/gitweb/ffmpeg.git/blob/
>> 7e0d640edf6c3eee1816b105c2f7498c4f948e74:/Changelog
>>
>> https://git.ffmpeg.org/gitweb/ffmpeg.git/tag/
>> 2aa4f5cc8be5e3168191cd13a61178a167687eac
>>
>>
>>
>>
>> --
>> Cin mailing list
>> Cin at lists.cinelerra-gg.org
>> https://lists.cinelerra-gg.org/mailman/listinfo/cin
>>
>
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