• Add new filter which will remove consequentive duplicate frame(s) and create a VFR video. ( --vpp-mpdecimate )
  This might help improve effective encoding performance.
• Add option to calculate VMAF score using libvmaf v1.3.15. (--vmaf)
  Currently Win x64 only feature.
  Please note that vmaf calculation is done by CPU, and is likely to become a performance bottleneck and hurt encoding performance.