Good morning my fellow video encoding afficionados.

As usual, I was trying to find interesting stuff on the web, and I finally did!

Someone in our wonderful AV1 enthusiast community has spent a lot of time working on natively adding svt-av1-psy to Handbrake; this is done through specific patches that add the additional functionality of svt-av1-psy in Handbrake.

This allows for Windows, macOS, Linux (Flatpak) and native Linux builds of Handbrake to be built with nearly complete svt-av1-psy support.

It's truly a great addition as it allows many more people to be at the leading edge of high fidelity AV1 encoding.

Note that these are based on Nightly Handbrake, but this shouldn't pose a problem.

Head over to the "Releases" page to find the full builds, CLI versions and even dynamic library replacement: https://github.com/Nj0be/HandBrake-SVT-AV1-PSY/releases

That'll be all from me. Thank you for your attention and have a great Saturday.

Happy Wednesday to all of you wonderful readers.

We've updated, improved, and polished the latest svt-av1-psy release. I'll make it quick and will start with the changelog:

-> MAIN CHANGES:

• New parameter: --tf-strength. This parameter is used for manually adjusting alt-ref frame temporal filtering strength. By default, this reduces temporal filtering strength by 4x.
• New parameters: --chroma-qm-min & --chroma-qm-max. These parameters control quantization matrix flatness for chroma planes (higher number is flatter and introduces fewer quantization changes).
• New parameter: --tune 4 - A new Tune called Still Picture has been introduced for AVIF encoding, with promising gains observed mainline SVT-AV1 and even over aomenc (libaom-av1) in some scenarios.
• All the performance improvements from mainline SVT-AV1 from more advanced pruning, program optimizations and CPU optimizations.

-> TUNING:

• Enable 10-bit subpixel motion estimation processing

Good day to you all folks.

We have another update to svt-av1-psy which has been cooking for a while now, and it's rather large for a letter change. You already know the way we roll from previous releases; I'll directly start with the changelog.

-> MAIN CHANGES:

• New parameter: --max-32-tx-size. This restricts block transform sizes to a maximum of 32x32 pixels. This can be useful in very specific scenarios for improving overall visual quality where the AV1 spec can allow for bad decisions decided by SAD/SSD/PSNR.
• New option: --hdr10plus-json. This parameter, added by quietvoid, allows for HDR10+ HDR support. In order to build a binary with support for HDR10+, see our PSY Development page
• New option: --adaptive-film-grain. This parameter 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.

-> TUNING:

• Disabled SSIM-cost tr

We're here again with a new SVT-AV1-PSY release.

This time, we've decided to change the way we name these updates as they've been difficult to keep track of versioning against mainline SVT-AV1 and our own. We'll still follow the cadence of mainline SVT-AV1, but with letter releases added in between for additional clarity.

I plan on releasing Linux optimized binaries soon and someone else will step up to provide the all important Windows builds and ideally, an ffmpeg build.

The Linux optimized binaries have been added. They are packaged under a single archive with a generic build, an x86-64-v3 build, an x86-64-v4 build (AVX512 capable CPU required) and an x86-64-v4-AVX512 build that utilizes the native SVT-AV1 AVX512 SIMD assembly code for maximum speed.

Let's get on to the main course, which is discussing the new options.

-> MAIN CHANGES:

• CRF range: previously capped at 63, it has been extended to a maximum value of 70. It can also be incremented in quarter incremen

Yes, it's finally been released after cooking for so long in the svt-av1-psy fork!

Hello everyone. It's certainly been a while.

It may seem like there hasn't been a lot of movvement in the AV1 encoder world... but there's actually been a lot in this regard.

As you've already read from the title, this patchset adds in deltaq guided variance adaptive quantization. It's been made by our comrade u/juliobbv : https://gitlab.com/AOMediaCodec/SVT-AV1/-/issues/2105

It helps to improve coding performance and visual quality in harder to encode scenarios, where low entropy/frequency areas tend to be ignored by the encoder at multiple levels (RD metric, skip modes); this helps it tremendously in this area.

• Pure BD-rate increases for harder content range from 3.75-10%+!

It manages to finally eclipse the harshest aom-av1-psy-101/lavish settings that even I could muster up.

At this point, SVT-AV1-PSY is the best public AV1 video encoder we have today.

• Until it's avif of course. aomenc still wins there.

Yet, it's not done yet as there are still improvements