cinelerra-5.1/ffmpeg/video/h264.f4v

   1 f4v libx264
   2 profile=baseline
   3 level=3.0
   4 preset=medium
   5 keyint_min=25
   6 x264opts keyint=25:min-keyint=4:qpmin=3:qpmax=33:qp_step=4:merange=8