Option vf: ass doesn't exist.
Error parsing option vf=ass,screenshot at line 2
Warning unknown option ass at line 3
Warning unknown option ass-color at line 4
The fontconfig option can't be used in a config file.
Error parsing option fontconfig=yes at line 5
Warning unknown option subfont-autoscale at line 8
Warning unknown option subfont-text-scale at line 9
Warning unknown option subfont-osd-scale at line 10