• 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".