So, I was doing this:

ffmpeg -i /media/johann/5461-000B/DCIM/100MEDIA/IMAG0079.AVI -ss 00:00:00 -t 00:00:20 ~/Public/240321/240321_0079.avi ; rm /media/johann/5461-000B/DCIM/100MEDIA/IMAG0079.AVI

one at a time changing the IMAG0079 to IMAG0080 etc every time. I am sure there must be a way to perform two actions (ffmpg) and (rm) on each file in a folder. Can anyone help (For next time)

Thanks!