ab-av1

AV1 video encoding tool with fast VMAF sampling & automatic encoder crf calculation. Uses ffmpeg, svt-av1 & vmaf.

Also supports other ffmpeg compatible encoders like libx265 & libx264.

Automatically determine the best crf to deliver the min-vmaf and use it to encode a video or image.

Two phases: * crf-search to determine the best --crf value * ffmpeg to encode using the settings

ab-av1 auto-encode [OPTIONS] -i <INPUT> --preset <PRESET>

Interpolated binary search using sample-encode to find the best crf value delivering min-vmaf & max-encoded-percent.

Outputs: * Best crf value * Mean sample VMAF score * Predicted full encode size * Predicted full encode time

ab-av1 crf-search [OPTIONS] -i <INPUT> --preset <PRESET>

Encode short video samples of an input using provided crf & preset. This is much quicker than full encode/vmaf run.

Outputs: * Mean sample VMAF score * Predicted full encode size * Predicted full encode time

ab-av1 sample-encode [OPTIONS] -i <INPUT> --crf <CRF> --preset <PRESET>

Invoke ffmpeg to encode a video or image.

ab-av1 encode [OPTIONS] -i <INPUT> --crf <CRF> --preset <PRESET>

Full VMAF score calculation, distorted file vs reference file. Works with videos and images.

Auto sets model version (4k or 1k) according to resolution.
Auto sets nthreads_ to system threads.
Auto upscales lower resolution videos to the model.
Converts distorted & reference to appropriate format yuv streams before passing to vmaf.

ab-av1 vmaf --reference <REFERENCE> --distorted <DISTORTED>

Install

Available in the AUR.

Pre-built ab-av1.exe included in the latest release.

Latest release sh cargo install ab-av1

Latest code direct from git sh cargo install --git https://github.com/alexheretic/ab-av1

ffmpeg newer than git-2022-02-24 with libsvtav1, libvmaf, libopus enabled.

ffmpeg should be in $PATH.