[FFmpeg-user] Video not deinterlacing

[Kosta Vlotis]

i'm using the following command to try and de interlace some video but
the problem is ithe video are still interlaced when they finish:

ffmpeg -async 2 -filter:v yadif -i ".\input\%1%2" -sameq -crf 1 -g 60
-s 1920x1080 -aspect 16:9 -c:a copy -y ".\output\%1.avi"

can anyone tell me why the deinterlace fails? there are no errors in
the ffmpeg output.