Try:
Code:
"C:\Program Files\avs2yuv\avs2yuv64.exe" -seek 5000 -frames 1000 "01_vid.avs" -o - | "C:\Program Files\x265\x265-10b8b-PGO.exe" -p veryslow
--crf 32 -F 4 -D 10 -I 240 --open-gop -b 10 --aq-mode 3 --aq-strength 0.9 --psy-rdoq 5.0 -o test.hevc --input - --y4m