1 files changed, 16 insertions, 10 deletions

diff --git a/tools/audio_extract b/tools/audio_extract
index 2c040ea..a37bcdf 100644
--- a/tools/audio_extract
+++ b/tools/audio_extract
@@ -15,20 +15,26 @@ if [ -z "$1" ]; then
 	exit 1
 fi
 
-./require ffmpeg
+./require ffmpeg || { exit 1; }
+
 #if [ "$FORMAT" == "pcm_s16le" ]; then
 #	FORMAT="wav"
 #fi
 
-echo -n " * Extracting audio ($FORMAT)..."
+if [ ! -f $BASENAME.wav ]; then
+	echo " * File $BASENAME.wav does not exists:"
+	echo -n " * Extracting audio ($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
 
-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
+	echo -e "OK!"
 else
-	ffmpeg -i $1 -vn -acodec copy $NAME.$FORMAT 2> /dev/null
+	echo " * File $BASENAME.wav already exists."
 fi
-
-echo -e "OK!"