v2.1.0-A

[gianni-rosato]

Hi there! We're back with our micro-release format to announce some exciting changes in SVT-AV1-PSY v2.1.0-A! 🎉

PSY Updates

Features

• New parameter --max-32-tx-size, which restricts block transform sizes to a maximum of 32x32 pixels. This can be useful in very specific scenarios for improving overall efficiency
• Added support for HDR10+ JSON files via a new --hdr10plus-json parameter (thanks @quietvoid!). In order to build a binary with support for HDR10+, see our PSY Development page.
• New parameter --adaptive-film-grain, which helps remedy perceptually harmful grain patterns caused by extracting grain from blocks that are too large for a given video resolution. This parameter is enabled by default

Quality & Performance

• Disabled SSIM-cost transform decisions while keeping SSIM-cost mode decisions, generally improving Tune 3's efficiency & consistency
• Additional NEON optimizations for ARM platforms, providing a speed increase

Documentation

• All of the features present in this release have been documented, so associated documentation has been updated accordingly
• Build documentation updated to reflect the HDR10+ build option

Bug Fixes

• Disabled quantization matrices for presets 5 and higher due to a visual consistency bug ([BUG] Major blocking issue with QMs enabled >= preset 5 #56)

Thanks for using SVT-AV1-PSY! ♥️

Full Changelog: https://github.com/gianni-rosato/svt-av1-psy/commits/v2.1.0-A

Linux builds: (coming soon)

macOS builds: (coming soon)

Windows builds: (coming soon)

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This discussion was created from the release v2.1.0-A.

[gitoss]

Thanks - looking forward to the '(coming soon)' builds including Windows.

[gianni-rosato]

Hi, a Windows build for AVX2-capable CPUs is now available. Check the release binaries. Thanks for your patience!

[gitoss]

Hi, a Windows build for AVX2-capable CPUs is now available.

Thanks - one question though: Does 'for AVX2-capable CPUs' mean that AVX512 is disabled? Using Zen 4 and --asm 512, only AVX2 is selected. I don't know if this is due to SVT itsself or this specific binary.

SVT [version]: SVT-AV1-PSY Encoder Lib v2.1.0-A
Svt[info]: [asm level on system : up to avx512]
Svt[info]: [asm level selected : up to avx2]

Searching the web, it had to be enabled for Handbrake. Enabling AVX512 shouldn't hurt because SVT has asm auto-selection... HandBrake/HandBrake#5596

[gitoss]

With the help of Patman86, I've figured out how to build svt with AVX512 - it needs manually added -DENABLE_AVX512=ON in cmake. Patman86/SVT-AV1-Mod-by-Patman#6