x264 to FFmpeg option mapping

 FFmpeg optionx264 option

      -g <frames>–keyint
      -b <bits per second>–bitrate
      -bufsize <bits>–vbv-bufsize
      -maxrate <bits>–vbv-maxrate
      -pass <1,2,3>–pass
      -crf <float>–crf
      -cqp <int>–qp
      -bf <int>–bframes
      -coder <0,1>–no-cabac/nothing
      -b_strategy <0,1>–no-b-adapt/nothing
      -bframebias <int>–b-bias
      -keyint_min <int>–min-keyint
      -sc_threshold <int>–scenecut
      -deblockalpha <int>

      -deblockbeta <int>–deblock
      -qmin <int>–qpmin
      -qmax <int>–qpmax
      -qdiff <int>–qpstep
      -qcomp <float>–qcomp
      -qblur <float>–qblur
      -complexityblur <float>–cplxblur
      -refs <int>–ref
      -directpred <int>–direct
      -me_method <dia,hex,umh,tesa>–me
      -me_range <int>–merange
      -subq <int>–subme
      -trellis <0,1,2>–trellis
      -nr <int>–nr
      -level <int>–level
      -bt <bits>–ratetol = -bt / -b
      -rc_init_occupancy <bits>–vbv-init = -rc_init_occupancy / -bufsize
      -i_qfactor <float>–ipratio = 1 / -i_qfactor
      -b_qfactor <float>–pbratio
      -chromaoffset <int>–chroma-qp-offset
      -rc_eq <string>–rc_eq
      -threads <int>–threads
      -cmp <-chroma/+chroma>–no-chroma-me/nothing
      -partitions–partitions
      +parti8×8i8×8
      +parti4×4i4×4
      +partp8×8p8×8
      +partp4×4p4×4
      +partb8×8b8×8
      -flags
      -loop/+loop–no-deblock/–deblock
      -psnr/+psnr–no-psnr/nothing
      -flags2
      +bpyramid–b-pyramid
      +wpred–weightb
      +mixed_refs–mixed-refs
      +dct8×8–8×8dct
      -fastpskip/+fastpskip–no-fast-pskip/nothing
      +aud–aud