More info:

VP9: https://www.twoorioles.com/eve-vp9

AV1: https://www.twoorioles.com/eve-av1

The last time these numbers were updated was ~2019, so it has been a while.

GitHub: https://github.com/gianni-rosato/svt-av1-psy/releases/tag/v2.3.0-B

I'm proud to announce that 8 SVT-AV1-PSY features will be making it into the next mainline SVT-AV1 release!

The 8 features are:

• Variance boost curve selection (adopted from our "enable alt curve")
• Sub-64px dimension support
• TF strength + adaptive TF
• Color help for help with printing encoder colorspace information
• Odd resolution support
• Luminance QP Bias (adopted from luma bias)
• Adaptive film grain
• User-configurable sharpness through --sharpness

We are

GitHub: https://github.com/gianni-rosato/svt-av1-psy/releases/tag/v2.3.0-A

Also, come say hi on Matrix! URL: https://matrix.to/#/#av1-for-dummies:matrix.org

cross-posted from: https://lemmy.ml/post/22744274

The Vulkan Working Group at The Khronos Group has delivered a series of video decode and encode extensions since 2022 collectively referred to as "Vulkan Video." These extensions integrate hardware-accelerated stream compression and decompression using widely adopted codecs with the full power of Vulkan, enabling developers to seamlessly combine GPU-powered rendering and compute acceleration with video processing in a single highly efficient runtime.

Today, with the release of Vulkan 1.3.302, Khronos is proud to announce two new encode extensions. First, the highly anticipated Encode AV1 extension enhances Vulkan Video by adding AV1 encode functionality to complement its existing AV1 decode support. This milestone means that Vulkan Video now provides full decode AND encode acceleration for the H.264, H.265 and AV1 codec standards. Additionally, the new Encode Quantization Map extension introduces advanced encoding

How does SVT-AV1 2.2.x stack up against the encoder's previous version?

GitHub: https://github.com/gianni-rosato/svt-av1-psy/releases/tag/v2.3.0

Also, come say hi on Matrix! URL: https://matrix.to/#/#av1-for-dummies:matrix.org

Changes for 1.5.0 'Sonic':

1.5.0 is a major release of dav1d, that:

• WARNING: we removed some of the SSE2 optimizations, so if you care about systems without SSSE3, you should be careful when updating!
• Add Arm OpenBSD run-time CPU feature
• Optimize index offset calculations for decode_coefs
• picture: copy HDR10+ and T35 metadata only to visible frames
• SSSE3 new optimizations for 6-tap (8bit and hbd)
• AArch64/SVE: Add HBD subpel filters using 128-bit SVE2
• AArch64: Add USMMLA implempentation for 6-tap H/HV
• AArch64: Optimize Armv8.0 NEON for HBD horizontal filters and 6-tap filters
• Power9: Optimized ITX till 16x4.
• Loongarch: numerous optimizations
• RISC-V optimizations for pal, cdef_filter, ipred, mc_blend, mc_bdir, itx
• Allow playing videos in full-screen mode in dav1dplay

GitHub: https://github.com/gianni-rosato/svt-av1-psy/releases/tag/v2.2.1-B

GitHub: https://github.com/gianni-rosato/svt-av1-psy/releases/tag/v2.2.1-A

cross-posted from: https://lemmy.world/post/19262772

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

Give the issue & upvote and comment to show your support - every like helps!

SVT-AV1-PSY v2.2.0

Long time no see! We're back with another exciting release: SVT-AV1-PSY v2.2.0! 🎉

PSY Updates

Features

• --tf-strength parameter for manually adjusting temporal filtering strength. By default, reduces temporal filtering strength by 4x
• --chroma-qm-min & --chroma-qm-max parameters for adjusting quantization matrix flatness for chroma planes
• --tune 4 - A new Tune called Still Picture has been introduced for AVIF encoding, with promising gains observed over aomenc, aomenc 4:4:4, and mainline SVT-AV1

Quality & Performance

• Enable 10-bit subpixel motion estimation processing for 10-bit inputs on Preset 3 & below
• Enable SUPERRES_AUTO_ALL for Tune 3 when superres-mode=4
  • Disables ALT-REF superres for speed and quality
• Add unipred bias for SSIM full mode decision cost when using Tune 3
• New perceptual QM curve when using Tune 3
  • Better chroma QM adjustment & better high fidelity performance
• Vastly improved screen content detecti

[2.2.0] - 2024-08-19

API updates

• No API changes on this release

Encoder

• Improve the tradeoffs for the random access mode across presets:
• Speedup of ~15% across presets M0 - M8 while maintaining similar quality levels (!2253)
• Improve the tradeoffs for the low-delay mode across presets (!2260)
• Increased temporal resolution setting to 6L for 4k resolutions by default
• Added ARM optimizations for functions with c_only equivalent yielding an average speedup of ~13% for 4k10bit

Cleanup Build and bug fixes and documentation

• Profile-guided-optimized helper build overhaul
• Major cleanup and fixing of Neon unit test suite
• Address stylecheck dependence on public repositories

bdr-ssimu2

Encode, analyze, & plot SSIMULACRA2 scores using a source video file that is encoded with FFmpeg.

This Python script generates BD-Rate (Bjøntegaard-Delta Rate) graphs for comparing the performance of different encoding commands. It encodes a source video with various specified Constant Rate Factor (CRF) values, calculates SSIMULACRA2 scores, and plots the results via matplotlib.

Features

• Encodes a source video using two user-configurable FFmpeg commands
• Calculates SSIMULACRA2 scores (and soon XPSNR scores as well)
• Generates BD-Rate curves comparing the two encoding commands
• Outputs both average and harmonic mean SSIMULACRA2 plots
• Allows for temporal metric analysis subsampling (sampling every nth frame)

Prerequisites

• Python 3.x
• FFmpeg
• VapourSynth with:
  • VSZip Plugin
  • FFMS2
  • fmtconv
• Required Python packages:
  • vapoursynth
  • matplotlib
  • tqdm

See more in the linked Git repo's

Introducing SVT-AV1-PSY v2.1.0-A

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

SVT-AV1 2.1.0 just released, how does it compare to SVT-AV1 2.0.0? Well-known encoder Trix attempts to answer this question with metrics, graphs, and detailed analysis.

[2.1.0] - 2024-05-17

API updates

• One config parameter added within the padding size. Config param structure size remains unchanged
• Presets 6 and 12 are now pointing to presets 7 and 13 respectively due to the lack of spacing between the presets
• Further preset shuffling is being discussed in #2152

Encoder

• Added variance boost support to improve visual quality for the tune vq mode
• Improve the tradeoffs for the random access mode across presets:
• Speedup of 12-40% presets M0, M3, M5 and M6 while maintaining similar quality levels
• Improved the compression efficiency of presets M11-M13 by 1-2% (!2213)
• Added ARM optimizations for functions with c_only equivalent

Cleanup Build and bug fixes and documentation

• Use nasm as a default assembler and yasm as a fallback
• Fix performance regression for systems with multiple processor groups
• Enable building SvtAv1ApiTests and SvtAv1E2ETests for arm
• Added variance boost documentation
• Added a mailmap file to map duplicat

Hi there! We're back with a new micro-release format to announce some exciting changes in SVT-AV1-PSY v2.0.0-A! 🎉

PSY Updates

Features

• The CRF range, previously capped at 63, has been extended to a maximum value of 70. It can also be incremented in quarter increments of 0.25
• New option: --enable-dlf 2 for a slower, more accurate deblocking loop filter
• New option: --qp-scale-compress-strength (0 to 3) which sets a strength for the QP scale algorithm to compress values across all temporal layers. Higher values result in more consistent video quality
• New option: --frame-luma-bias (0 to 100) enables experimental frame-level luma bias to improve quality in dark scenes by adjusting frame-level QP based on average luminance across each frame

Quality & Performance

• A temporal layer qindex offset has been added to Tune 3 for more consistent quality across frames when encoding
• Minor speed bump to Preset 8
• Dynamic delta_q_res switching implemented to help

From the GitHub releases:

Hello, everyone! We've been hard at work enhancing SVT-AV1 with our additions to the encoder improving visual fidelity. Little by little, we are working on trying to bring many of them to mainline! For the time being, I want to note that major SVT-AV1-PSY releases & mainline releases are not the same, and the codebases differ due to our changes; the version numbers may be identical, but the versions themselves are not, which is disclosed within the encoder's version information. With that, we're excited to announce SVT-AV1-PSY v2.0.0! 🎉

PSY Updates

Variance boost

• Moved varboost delta-q adjusting code to happen before TPL, giving TPL the opportunity to work with more accurate superblock delta-q priors, and produce better final rdmult lambda values
  • Fixed rare cases of pulsing at high CRFs (>=40) and strengths (3-4)
  • 2% avg. bitrate reduction for comparable image quality
• Added an alternative boosting curve (--enable-alt-curve), wit