The QSV encoder doesn’t have a parameter called CRF. The equivalent ratecontrol method is LA_ICQ. look_ahead should be 1. global_quality can be from 1 to 51. Lower value represents better quality. ~25 should be equivalent to x264 CRF 23. LookAheadDepth, a parameter which specifies the depth of look ahead rate control algorithm. It is the number of frames analyzed before encoding. Valid value range is from 10 to 100. Lookahead is only available on Intel® Iris™ Pro Graphics, Intel® Iris™ Graphics and Intel® HD Graphics on Haswell architecture (4th Generation Core) and forward. Both Interlaced and progressive content is supported.

HEVC (10bit):
ffmpeg -i input.mp4 -load_plugin hevc_hw -c:v hevc_qsv -pix_fmt p010le -global_quality 25 -g 24 -c:a aac -b:a 192k -metadata:s:a language=eng -metadata creation_time=now -loglevel verbose hevc.mp4

ffmpeg -i input.mp4 -c:v h264_qsv -global_quality 25 -g 24 -c:a aac -b:a 192k -metadata:s:a language=eng -metadata creation_time=now -loglevel verbose avc.mp4
Living in Tune with Nature's Beat (Earth, Water, Fire, Air, Space)

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