[ -e "$4" ] && { echo "Output file already exists, bailing out!" 1>&2; exit 1; }
OUTPUT_FILE="$4"
-ges-launch-1.0 -s "$INPUT_FILE" $INPOINT $DURATION -o "$OUTPUT_FILE"
+ges-launch-1.0 +clip "$INPUT_FILE" inpoint=$INPOINT duration=$DURATION -o "$OUTPUT_FILE"