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 ...
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 reduce signaling overhead, which should improve quality especially at CRF ≥40
Other general improvements to Tune 3
Documentation
PNG images have been replaced with smaller lossless WebP images, resulting in faster loading & repository cloning times.
Help menu formatting adjusted for less frequent underlining
--progress 2 no longer reports the same information as --progress 3
Other
Introducing PSY Micro-releases! Each micro-release will be marked with a letter, bringing a bundle of new features & improvements. The release letter will reset back to the initial A each time our mainline version is updated. More info can be found in this project's README & the PSY Development page
There are ongoing comparisons that are almost always favorable. If you personally don't feel the same way, you can simply use vanilla SVT settings within PSY.