v0.9.1

• Fix xpsnr inf score parsing.
• Fix xpsnr reference vfilter usage.
• Add --xpsnr-fps: Frame rate override used to analyse both reference & distorted videos. Default 60.

v0.9.0

• Add XPSNR support as a VMAF alternative.
  • Add sample-encode --xpsnr arg which toggles use of XPSNR instead of VMAF.
  • Add crf-search, auto-encode --min-xpsnr arg (alternative to --min-vmaf).
  • Add xpsnr command for measuring XPSNR score.
• Support negative --preset args.
• Add --vmaf-fps: Frame rate override used to analyse both reference & distorted videos. Default 25.
• Omit data streams when outputting to matroska (.mkv or .webm).
• Omit audio, subtitle & data streams in VMAF calls to work around possible ffmpeg memory leaks.
• mpeg2video: map --crf to ffmpeg -q and set default crf range to 2-30.

v0.8.0

• crf-search: Tweak 2nd iteration logic that slices the crf range at the 25% or 75% crf point.
  • Widen to 20%/80% to account for searches of the "middle" two subranges being more optimal.
  • Disable when using custom min/max crf ranges under half the default.
• Add sample-encode info to crf-search & auto-encode. Show sample progress and encoding/vmaf fps.
• Improve sample-encode progress format consistency.
• Add crf-search -v flag to print per-sample results.
• Add auto-encode -v flag to print per-crf results, -vv to also print per-sample results.

v0.7.19

• Fix stdin handling sometimes breaking bash shells.

v0.7.18

• Use default .265, .264 image output extensions for libx265, libx264.
  Fixes crf-search for images with these codecs.
• Improve --vfilter docs, clarify VMAF usage.

v0.7.17

• Improve failing ffmpeg stderr printing:
  • Don't allow many '\r'-ending updates to cause all other stored info to be truncated.
  • Increase max heap storage of output ~4k->32k to allow more complete output in some cases.
• Fix caching unaffected by --reference-vfilter usage.
• Improve --vfilter docs. Describe VMAF usage & mention --reference-vfilter.
• Improve --vmaf-scale docs.
• VMAF: Remove -r 24 ffmpeg input.
• VMAF: Add new default options "shortest=true", "ts_sync_mode=nearest" and use vfilter "settb=AVTB".

v0.7.16

• Fix VMAF score parse failure of certain successful ffmpeg outputs.

v0.7.15

• Show full ffmpeg command after errors.
• For *_vaapi encoders map --crf to ffmpeg -q (instead of -qp).
• Set av1_vaapi default --max-crf to 255.
• Fix sample-encode printing output to non-terminals.
• Omit "Encode with: ..." stderr hint for non-terminals.
• Support logging enabled when stderr is not a terminal or by setting env var RUST_LOG. E.g:
  • RUST_LOG=ab_av1=info "info" level logs various progress results like sample encode info
  • RUST_LOG=ab_av1=debug "debug" level logs include ffmpeg calls
• Don't panic on non-zero status exit.
• When unable to parse a vmaf score fail faster and include ffmpeg output.
• Add --reference-vfilter arg to sample-encode, crf-search, auto-encode to allow
  overriding --vfilter for VMAF.
• Add --sample-duration arg to configure the duration of each sample. Default 20s.

v0.7.14

• Fix bash completions of some filenames.

v0.7.13

• Use a single ffmpeg process to calculate VMAF replacing multi process piping.
• Exclude subtitle tracks from samples.
• Add --keep option for crf-search & auto-encode.