Test media files with ffmpeg and echo all broken files to stderr

testmedia.sh

#!/bin/bash
# Usage:
# ./testmedia.sh 2>~/broken_files

# Make a temporary file
TEMP=`mktemp`

# Find all media files in current directory
find -type f -name '*.mkv' -o -name '*.avi' > "${TEMP}"

# Go through all files
while read file; do
	echo -n "${file} "

	# Count the errors with ffmpeg
	ERRORS=$(ffmpeg -nostdin -v error -i "${file}" -map 0:1 -f null /dev/null 2>&1 | wc -l)
	echo "[${ERRORS} errors]"

	# If we have any errors then remove the file
	if [ ${ERRORS} -ne 0 ]; then
		echo "This file contains errors: ${file}"
		(>&2 echo "${file}")
	fi
done < "${TEMP}"

# Clean up temporary file
rm "${TEMP}"