ffmpeg -i input1.mp4 -an -vcodec copy -f m4v input1video.m4v
#!/bin/sh
normalRes="1920x1080"
dir=$1
for f in $(find $dir -name "*.*"); do
res="$(mediainfo '--Inform=Video;%Width%x%Height%' $f)"
if [ "$res" != "$normalRes" ]; then
echo $f
fi
done