Convert MKVs In Dir To Mp4 FFMPEG

Handy one liner:

$ find . -type f -name "*.mkv" -exec bash -c 'FILE="$1"; ffmpeg -i "${FILE}" -movflags faststart -profile:v high -level 4.2  "${FILE%.mkv}.mp4";' _ '{}' \;

This is very useful if you downloaded a bunch of stuff from youtube and would like to convert it to mp4 to watch on an older tv or DVD player from a usb stick.