Chromecast batch conversion script

#! /bin/bash

# Batch Convert Script by Stefano
# The Purpose of this Script is to batch convert any video file to mp4 or mkv format for chromecast compatibility
# this script only convert necessary tracks if the video is already
# in H.264 format it won't convert it saving your time!

# Put all video files need to be converted in a folder!
# the name of files must not have " " Space!
# Rename the File if contain space

# Variable used:
# outmode should be mp4 or mkv
# sourcedir is the directory where to be converted videos are
# indir is the directory where converted video will be created


# usage:
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#########################
# cast.sh mp4 /home/user/divx /home/user/chromecastvideos
# or
# cast.sh mkv /home/user/divx /home/user/chromecastvideos
#########################
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# working mode
outmode=$1
# check output mode
if [[ $outmode ]]; then
if [ $outmode = "mp4" ] || [ $outmode = "mkv" ]
    then
    echo "WORKING MODE $outmode"
    else
    echo "$outmode is NOT a Correct target format. You need to set an output format! like cast.sh mp4 xxxx or cast.sh mkv xxxx"
    exit
fi
else
echo "Working mode is missing. You should set a correct target format like mp4 or mkv"
exit
fi

# Source dir
sourcedir=$2
if [[ $sourcedir ]]; then
     echo "Using $sourcedir as Input Folder"
    else
     echo "Error: Check if you have set an input folder"
     exit
fi

# Target dir
indir=$3
if mkdir -p $indir/castable
    then
     echo "Using $indir/castable as Output Folder"
    else
     echo "Error: Check if you have the rights to write in $indir"
     exit
fi

# set format
if [ $outmode=mp4 ]
    then
     outformat=mp4
    else
     outformat=matroska
fi

# Check FFMPEG Installation
if ffmpeg -formats > /dev/null 2>&1
    then
     ffversion=`ffmpeg -version 2> /dev/null | grep ffmpeg | sed -n 's/ffmpeg\s//p'`
     echo "Your ffmpeg verson is $ffversion"
    else
     echo "\nERROR:\nYou need ffmpeg installed with x264 and an aac encoder"
     exit
fi

if ffmpeg -formats 2> /dev/null | grep "E mp4" > /dev/null
    then
     echo "Check mp4 container format ... OK"
    else
     echo "Check mp4 container format ... NOK"
     exit
fi

if ffmpeg -formats 2> /dev/null | grep "E matroska" > /dev/null
        then
         echo "Check mkv container format ... OK"
        else
         echo "Check mkv container format ... NOK"
         exit
fi

if ffmpeg -codecs 2> /dev/null | grep "libfdk_aac" > /dev/null
        then
         echo "Check AAC Audio Encoder ... OK"
        else
         echo "Check AAC Audio Encoder ... NOK"
         exit
fi

if ffmpeg -codecs 2> /dev/null | grep "libx264" > /dev/null
        then
         echo "Check x264 the free H.264 Video Encoder ... OK"
        else
         echo "Check x264 the free H.264 Video Encoder ... NOK"
         exit
fi

echo "Your FFMpeg is OK\nEntering File Processing\n\n"

################################################################
cd "$sourcedir"
for filelist in `ls`
do
    if ffmpeg -i $filelist 2>&1 | grep 'Invalid data found'     #check if it's video file
       then
       echo "ERROR File $filelist is NOT A VIDEO FILE can be converted!"
       exit

    fi

    if ffmpeg -i $filelist 2>&1 | grep Video: | grep h264       #check video codec
       then
        vcodec=copy
       else
        vcodec=libx264
    fi

    if ffmpeg -i $filelist 2>&1 | grep Video: | grep "High 10"  #10 bit H.264 can't be played by Hardware.
       then
        vcodec=libx264
    fi

    if [ ffmpeg -i $filelist 2>&1 | grep Audio: | grep aac ] || [   ffmpeg -i $filelist 2>&1 | grep Audio: | grep mp3 ] #check audio codec
       then
        acodec=copy
       else
        acodec=libfdk_aac
    fi


    echo "\n\nUseing video codec: $vcodec audio codec: $acodec and Container format $outformat for\nFile: $filelist\n\n\n\nStarting Converting\n"

# using ffmpeg for real converting
    echo "ffmpeg -i $filelist -y -f $outformat -acodec $acodec -ab 192k -ac 2 -absf aac_adtstoasc -async 1 -vcodec $vcodec -vsync 0 -profile:v main -level 3.1 -qmax 22 -qmin 20 -x264opts no-cabac:ref=2 -threads 0 $indir/castable/$filelist.$outmode"
    ffmpeg -i $filelist -y -f $outformat -acodec $acodec -ab 192k -ac 2 -absf aac_adtstoasc -async 1 -vcodec $vcodec -vsync 0 -profile:v main -level 3.1 -qmax 22 -qmin 20 -x264opts no-cabac:ref=2 -threads 0 $indir/castable/$filelist.$outmode


done
    echo ALL Processed!



###################
echo "DONE"
exit