Rotate all videos in current directory 90 degrees and remove rotate metadata that's used by iOS & Quicktime.
find *.mp4 | xargs -I {} ffmpeg -i "{}" -v 0 -vf "transpose=1" -qscale 0 -y -metadata:s:v:0 "rotate=0" "rotated/{}"
Print the width, height and filename for every video in the current directory
find *.mp4 | xargs -I {} ffprobe -v quiet -print_format json -show_format -show_streams {} | jq -c ". | {filename:.format.filename, w:.streams[0].width, h:.streams[0].height}"