Shady

#!/bin/bash
# Ipod/G1 Videoencoder v0.3 by Shady
# Features:
# Calculates new aspect ratios depending on video file. Never will you get a stretched out video!
# Skips videos already encoded
# Adds subtitles wether it is softsub from .mkv or a seperate same-named.srt.
# Specify Language preferences for both Audio and Subtitles
# Recursively finds videos and encodes them.
# Made to work especially well on the Andoid OS!
#-------------
#Set home where to put log.
home="/home/shady"

#--------Subtitle And Language
#Set to where font is to use in subtitles
subfontpath="/home/shady/myriadwebpro-condensed.ttf"

#Set to what scale to use in font.
subfontscale="3.2"

#Subtitle options, will pick the english language sub first, if not there then the
#dutch sub file, otherwise the undefined (dont know language sub).

#Set to "" if you don't want subtitles. Mind that if your video doesnt have subtitles nothing will happen.
suboptions="-slang eng,dut,und -font $subfontpath -subfont-text-scale $subfontscale"

#edit down here if you know what your doing. Check bottom for mencoder options.
#Audiooptions, set to "" if you don't need audiosettings.
audiooptions="-alang jpn,eng,und"

#----------

#bash doesn't do float calculations, found this on inet somewhere.
function fgt() {
    LHS=$1
    RHS=$2

    min=`(echo $LHS ; echo $RHS) | sort -n | head -1`
    if [ "$min" = "$LHS" ]; then
        return 1
    else
        return 0
    fi
}

function flt () {
    LHS=$1
    RHS=$2

    min=`(echo $LHS ; echo $RHS) | sort -n | head -1`
    if [ "$min" = "$LHS" ]; then
        return 0
    else
        return 1
    fi
}

function true_or_false () {
    FUNC=$1
    ARG1=$2
    ARG2=$3

    $FUNC $ARG1 $ARG2

    if [ $? -eq 0 ]; then
        echo TRUE
        else
        echo FALSE
    fi
}

find "$1" \( -name *.avi -o -name *.mkv -o -name *.mp4 -o -name *.ogm \) -a  \( ! -iname "*Mobile*" \)  -type f -print > $home/.genmob.log

cat $home/.genmob.log | while read LINE
do
        #File information and check
        #TODO check if there is a mobile directory inside the directory we are looking.
        vfile=$(basename "$LINE")
        vdir=$(dirname "$LINE")
        wext=$(echo "$vfile" | awk -F . '{print $NF}')
        vfilewext=$(basename "$vfile" ."$wext")
        newfile="$vdir/Mobile/NOTREADYYET-Mobile-$vfilewext".mp4
        if [ ! -d "$vdir/Mobile" ] && [ ! -f "$vdir/Mobile/Mobile-$vfilewext.mp4" ] && [ "$(basename "$vdir")" != "Mobile" ]
        then
            mkdir "$vdir/Mobile"
            #echo $newfile

            #Find aspect ratio
            #Movie info:
            #yes i know this is ugly as hell, i dunno how to split string or whatever in bash.
            vwidth=`expr substr $(mplayer -identify "$LINE" -ao null -vo null -frames 0 2>/dev/null | grep ^ID_VIDEO_WIDTH=) 16 5`
            vheight=`expr substr $(mplayer -identify "$LINE" -ao null -vo null -frames 0 2>/dev/null | grep ^ID_VIDEO_HEIGHT=) 17 5`
            vaspect=`echo "$vwidth / $vheight " | bc -l`
            if [ $(true_or_false fgt $vaspect 1.2) = "TRUE" -a $(true_or_false flt $vaspect 1.4) = "TRUE" ]
            then
                    newaspect="4:3"
                    newoptions="scale=432:324,crop=432:320"
            else
                    if [ $(true_or_false fgt $vaspect 1.64) = "TRUE" -a $(true_or_false flt $vaspect 1.81) = "TRUE" ]
                    then
                           newaspect="16:9"
                            newoptions="scale=480:270,expand=480:272"
                    else
                            if [ $(true_or_false fgt $vaspect 1.83) = "TRUE" -a $(true_or_false flt $vaspect 1.87) = "TRUE" ]
                            then
                                    newaspect="37:20"
                                    newoptions="scale=480:259,expand=480:272"
                            else
                                    if [ $(true_or_false fgt $vaspect 2.3) = "TRUE" -a $(true_or_false flt $vaspect 2.5) = "TRUE" ]
                                    then
                                            newaspect="47:20"
                                            newoptions="scale=480:204,expand=480:208"
                                    fi
                            fi
                    fi
            fi
            echo "Encoding: $vwidth x $vheight with ratio $newaspect : $vfile"
            #Edit this line with your own options
            mencoder "$LINE" -o "$newfile" -of lavf -lavfopts format=mp4 -ss 1 -vf pp=ci,$newoptions,harddup -ovc x264 -x264encopts crf=30.0:nocabac:level_idc=30:global_header:threads=2 -ofps 30000/1001 -oac faac -faacopts mpeg=4:object=2:br=128:raw -channels 2 -srate 44100 -af volnorm $suboptions -sub "$vdir/$vfilewext".srt $audiooptions -msglevel all=-1:statusline=5
            mv "$newfile" "$vdir/Mobile/Mobile-$vfilewext".mp4
        else
            echo "Skipping: $vfile already is in a Mobile directory or already has a Mobile directory."
        fi

        :
done

#4:3=1.33
#Ex: 640x480
#scale=432:324,crop=432:320
#16:9=1.7778
#Ex: 848x480
#scale=480:270,expand=480:272
#37:20=1.8500
#Ex: 1280x688
#scale=480:259,expand=480:270
#47:20=2.4000
#Ex: 1920x800
#scale=480:204,expand=480:208