./ffmpeg -y -i  /root/fGFNmEOntFA.flv -vcodec libx264 -coder 0 -flags +loop -cmp +chroma -subq 2 -me_method epzs -me_range 16 -bf 0 -threads 2 -refs 2 -trellis 0 -x264opts no-mixed-refs=1:no-8x8dct=1:no-mbtree=1:partitions=+parti8x8+parti4x4-partp8x8-partb8x8:no-weightb=0:ipratio=1.41:rc_lookahead=0:sliced-threads  -wpredp 0 -rc_lookahead 20 -g 250 -keyint_min 125 -sc_threshold 20  -i_qfactor 0.71 -qcomp 0.6 -qmin 10  -qmax 51 -qdiff 4   /tmp/test.3g1.flv