v2.3.0-A

[gianni-rosato]

Hello everyone! Merry Christmas to those who celebrate – we have a special gift for you this holiday season in the form of SVT-AV1-PSY v2.3.0-A! 🎁

Also, this is going to be my last release working heavily on features for SVT-AV1-PSY, at least for a while. You can read more at my blog post, but it has been great fun and I'll miss working on features for this project very much. I'll still be acting as the project's maintainer for now, but very infrequently. Luckily, this project has always been a team effort, and I'm more than certain my talented team members will keep these gears turning without me, so keep tuning in for new releases!

PSY Updates

Features

• Introduced --enable-tf 2 which adaptively scales temporal filtering strength based on 64x64 block error
• Introduced --psy-rd, a feature designed to help retain visual energy to improve perceptual fidelity

Quality & Performance

• New default --sharpness value of 1
• Allowed use of additional interpolation levels for sub pixel motion estimation to improve quality at preset -1
• Variance Boost now samples across three octiles for more consistent boosting behavior
• Increased sharpness on keyframes relative to user-configured --sharpness value when using Tune 3

Bug Fixes

• Fixed a bug preventing use of --fast-decode 2
• Fixed crashing with Tune 3 at high CRF values ([BUG] crashes with the combination of crf >=56 and tune 3 #96)
• Fixed a bug where CRF and MBR values weren't printing correctly to the terminal

Support Us

As SVT-AV1-PSY's codebase has become more complex and the encoder's capabilities have increased dramatically, our efforts have scaled in kind. We have poured hours into coding, testing, distributing, and supporting this piece of open-source software entirely for free, and our work isn't stopping any time soon.

If you appreciate the work that we do and you'd like to support us, we are always excited to see code contributions from outside of the core development team. Otherwise, you can support us monetarily via the links below.

Julio Barba: Coming Soon
BlueSwordM: Coming Soon
Clybius: Coming Soon
Gianni Rosato: Donate

You can also visit our website at svt-av1-psy.com. Any support you can offer goes a long way, and we sincerely appreciate it. ♥️

Binaries

Coming Soon

Thanks for using SVT-AV1-PSY! <3

Full Changelog: https://github.com/gianni-rosato/svt-av1-psy/commits/v2.3.0-A

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This discussion was created from the release v2.3.0-A.

[gitoss]

Thanks y'all for your effort on the -psy fork - I hope someone will manage some pull requests to mainline so the features will not be orphaned by further branching development on the 3.0+ mainline.

[igorbaryshev]

Thank you for your work!
What's the motivation behind --sharpness 1 by default? Will that impact performance?

[gianni-rosato]

Hi! Defaults are often informed by both metrics and visuals, and we saw both improve with a default--sharpness value of 1.