[Cin] libaom 3.2.0

[Phyllis Smith]

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?

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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