ffmpeg/ffpresets/libx264-lossless_slow.ffpreset

coder=1
flags=+loop
cmp=+chroma
partitions=+parti8x8+parti4x4+partp8x8+partp4x4-partb8x8
me_method=umh
subq=6
me_range=16
g=250
keyint_min=25
sc_threshold=40
i_qfactor=0.71
b_strategy=1
qcomp=0.6
qmin=10
qmax=51
qdiff=4
refs=2
directpred=1
flags2=+dct8x8+fastpskip
cqp=0
wpredp=2