#!/bin/sh

exist_file()
{
  if [ -e "$1" ]
  then
    return 1
  else
    return 2
  fi  
}

if [ $# != 2 ] ; then
echo "USAGE: $0 media_src1 media_src2"
exit 1;
fi

arg1=`basename $1`

arg2=`basename $2`

mainN1=${arg1%%.*}
mainE=${arg1#*.}
mainN2=${arg2%%.*}

dirname=`dirname $1`

exist_file $1
value=$?

if [ $value -eq 2 ] 
then 
  echo "No source media ${arg1} found in the directory! Put it here firstly!\n"
  exit
fi

exist_file $2
value=$?

if [ $value -eq 2 ] 
then 
  echo "No source media ${arg2} found in the directory! Put it here firstly!\n"
  exit
fi

output1=${mainN1}.ts
output2=${mainN2}.ts

ffmpeg -i $1 -vcodec copy -acodec copy -vbsf h264_mp4toannexb ${output1}
ffmpeg -i $2 -vcodec copy -acodec copy -vbsf h264_mp4toannexb ${output2}
ffmpeg -i "concat:${output1}|${output2}" -acodec copy -vcodec copy -absf aac_adtstoasc ${mainN1}.${mainE}

rm -rf ${output1}
rm -rf ${output2}
rm -rf $1
mv ${mainN1}.${mainE} ${dirname}