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#!/bin/bash
#
# Date: 2009-12-16
# Author: Ole Kristian Lien
# License: GNU General Public License
#
# Extract audio from video-file
EXT=`echo "$1"|awk -F . '{print $NF}'`
NAME=`basename $1 .$EXT`
FORMAT=`./audio_format $1`
if [ -z "$1" ]; then
echo "Usage: $0 <video-file> [<start-pos> <duration>]"
exit 1
fi
./require ffmpeg || { exit 1; }
#if [ "$FORMAT" == "pcm_s16le" ]; then
# FORMAT="wav"
#fi
if [ ! -f $NAME.wav ]; then
echo " * File $NAME.wav does not exists:"
echo -n " * Extracting audio ($FORMAT)..."
if [ "$3" ]; then
#DURATION="30" #`./duration$1`
DURATION="$3"
#echo "start: $2 - Dur: $DURATION"
ffmpeg -i $1 -ss $2 -t $DURATION -vn -acodec copy $NAME.$FORMAT 2> /dev/null
else
ffmpeg -i $1 -vn -acodec copy $NAME.$FORMAT 2> /dev/null
fi
echo -e "OK!"
else
echo " * File $NAME.wav already exists."
fi
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