• Select vmaf model model=version=vmaf_4k_v0.6.1 for videos larger than 2560x1440 if no other model is specified.
  This will raise VMAF scores for 4k videos that previously were getting harsher treatment from the 1k model.
• Add --vmaf-scale option which sets the video resolution scale to use in VMAF analysis.
  auto (default) auto scales based on model & resolution, none no scaling or custom WxH
  format, e.g. 1920x1080.
  • auto upscale 1728x972 & smaller to 1080p, preserving aspect, when using the default 1k VMAF model.
    This will reduce VMAF scores that previously were getting more generous treatment from the 1k model.
  • auto upscale 3456x1944 & smaller to 4k, preserving aspect, when using the 4k VMAF model.
• Add --downmix-to-stereo option, if enabled & the input streams use > 3 channels (dts 5.1 etc),
  downmix input audio streams to stereo.
• After encoding print per-stream sizes in addition to the file size & percent.
• Add predicted video stream percent reduction to auto-encode search progress bar after a successful search.
• Support non-video/audio/subtitle streams from input to output, e.g. attachments.
• When defaulting the output file don't use input extension if it is avi, y4m, ivf, use mp4 instead.
• Fix clearing crf-search progress bar output on error.
• Strip debug symbols in release builds by default which reduces binary size (requires rustc 1.59).