#!/bin/sh
#
# Print duration of video files
#
# Author:  Reiner Herrmann <reiner@reiner-h.de>
# License: GPLv3
#
# mplayer:
#     mplayer -identify -ao null -vo null -frames 0 FILENAME 2>/dev/null | grep ID_LENGTH
#     0m3.604s
# tcprobe:
#     tcprobe -i FILENAME 2>/dev/null | grep length
#     0m3.340s, but can't read mkv files
# ffmpeg:
#     ffmpeg -i FILENAME 2>&1 | grep Duration
#     0m8.981s
#

print_time ()
{
	FILENAME=$1
	if [ ! -f "$FILENAME" ]
	then
		echo "$0: $FILENAME: No such file or directory" 1>&2
		return 1
	fi

	TIME=`mplayer -identify "$FILENAME" -ao null -vo null -frames 0 2>/dev/null | grep ^ID_LENGTH | sed 's/^ID_LENGTH=\([0-9]*\)\.[0-9]*/\1/'`
	if [ ! $TIME ]
	then
		echo "$0: $FILENAME: Unrecognized format" 1>&2
		return 1
	fi

	HOURS=$(( $TIME/3600 ))
	MINUTES=$(( $(($TIME-$HOURS*3600))/60 ))
	SECONDS=$(( $TIME%60 ))
	printf " %i:%.2i:%.2i  -  $FILENAME\n" $HOURS $MINUTES $SECONDS
}

for filename in "$@";
do
	print_time "$filename";
done