Quick & dirty shell script for automatically stripping audio from all mp4 files in a path (requiers ffmpeg to work).

silence-mp4s.sh

#!/bin/bash
#
# **A quick & dirty script for removing audio from mp4 files in a given dir.**

## Check if path given as arg:
if [ $# -eq 0 ]; then
    echo "ERR! No path supplied"; exit 1;
fi

## Check if give path exists:
if [ ! -d "$1" ]; then
    echo "ERR! Path doesn't exist"; exit 1;
fi

## Check for second param:
if [ "$2" = "-s" ]; then
	## Go through each mp4 file in path:
	find "$1" -maxdepth 1 -name "*.mp4" | while read -r file; do
		## Strip out audio from file:
		input_file=$(basename "$file" .mp4)
		ffmpeg -y -i "$file" -vcodec copy -an "$1/${input_file}-Q.mp4"

		## Remove source file:
		rm -rf "$1/${input_file}.mp4"

		## Restore original filename:
		mv "$1/${input_file}-Q.mp4" "$1/${input_file}.mp4"

		## Fix file perms:
		chmod +x "$1/${input_file}.mp4"
	done
else
	echo "!!!THIS WAS DRY RUN, USE \`-s\` WHEN YOU'RE SURE!!!"
fi

## List out processed files:
echo -e ""
find "$1" -maxdepth 1 -name "*.mp4" | while read -r file; do
    echo "- $(basename "$file" .mp4).mp4"
done

## Notify user
echo -e "\nDone!"