#!/bin/sh #mkdir convert for f in *.avi; do ffmpeg -i "$f" "${f%.avi}.mp4"; done #find -name '*.avi' -exec ffmpeg -i {} {}.mp4 \; #find a safe way to delete old files? #find . -name "*.avi.mp4" -exec rename 's/\.avi.mp4$/\.mp4/i' {} \;