vcodec=libvpx
g=120 lag-in-frames=25
deadline=good
cpu-used=0
vprofile=1
qmax=51 qmin=11 slices=4 b=2M #ignored unless using -pass 2 maxrate=24M minrate=100k auto-alt-ref=1 arnr-maxframes=7 arnr-strength=5 arnr-type=centered