#!/bin/bash

#Script by Kris Occhipinti

#http://filmsbykris.com
#GPLv3 - http://www.gnu.org/licenses/gpl-3.0.txt
#Source code https://github.com/metalx1000/Video-and-Film-Scripts

#This Script is designed to fade all video clips in a folder


if [ $# -lt 2 ]
then
    echo "Useage: $0 <file type> <fade length in frames> <output dir>"
    echo "Example: $0 MOV 30 /tmp/output"
    exit 0
fi

ext=$1
len=$2 #fade length in frames

outputdir="$3"

echo "creating \"$outputdir\""
mkdir -p "$outputdir" || e="error"

if [ "$e" = "error" ]
then
    echo "Can't create $outputdir"
    exit 1
fi

x=""
for i in *.$ext
do 
    x="$x $i -mix $len -mixer luma -mixer mix:-1"
done

x="melt$x -consumer avformat:${outputdir}/fade_$(date +%s).$ext b=220000k acodec=mp2 ab=128k"

eval $x