On Wed, Dec 19, 2018, at 12:17 PM, Ulf Zibis wrote: > > ffmpeg -i CYD.mp4 -vf select='not(mod(n\,1500))' CYD_%03d.jpg > I got 150,000 pictures with reduced quality (~12 kB). Weird!!! Add "-vsync vfr -q:v 2" output options.