• Update VPL to 2021.6.
• Add option to list accerelation modes available using VPL. (--check-impl) ( #64 )
• Add option to measure processing time for each OpenCL filter enabled. (--vpp-perf-monitor)
  This is meant for profiling purpose only, please note that when this option is enabled, overall performance will decrease as the application waits each filter to finish when checking processing time of them.
• Add option to apply bitstream filter to audio track. (--audio-bsf)
• Optimize --vpp-resize lanczosx, 50% faster on 11700K.
• Optimize --vpp-smooth, 25% faster on 11700K.
• Optimize --vpp-knn, 2x faster on 11700K.