Someone

ffmpeg -i INPUT -an -pass 1 -vcodec h264 -b BIT_RATE -flags +loop -chroma 1 -partitions parti4x4+partp8x8+partb8x8 -flags2 -8x8dct-wpred -me_method 5 -subq 1 -trellis 0 -refs 1 -max_b_frames 3 -coder 1 -me_range 16 -gop_size 250 -keyint_min 25 -sc_threshold 40 -i_quant_factor 0.71 -rc_eq 'blurCplx^(1-qComp)' -qcompress 0.6 -qmin 10 -qmax 51 -max_qdiff 4 OUTPUT.mp4

Replace INPUT and OUTPUT.mp4 with your own values.