convert_DTS_ac3

#!/bin/sh


ffprobe="/volume1/homes/user/ffmpeg/bin/ffprobe"
ffmpeg="/volume1/homes/user/ffmpeg/bin/ffmpeg"

##  cleanup by deleting unwanted files
find "$1" -name "*.txt" -type f -print0 | xargs -0 rm -rf
find "$1" -name "*.db" -type f -print0 | xargs -0 rm -rf
find "$1" -name "*.nfo" -type f -print0 | xargs -0 rm -rf
find "$1" -name "*sample*.mkv" -type f -print0 | xargs -0 rm -rf
find "$1" -name "*Sample*.mkv" -type f -print0 | xargs -0 rm -rf
find "$1" -name "*SAMPLE*.mkv" -type f -print0 | xargs -0 rm -rf

##  go over all MKVs
find "$1" -name "*.mkv" -type f | while read f
do
#echo processing $f
##  Detect what audio codec is being used:
audio=$($ffprobe "$f" 2>&1 | sed -n '/Audio:/s/.*: \([a-zA-Z0-9]*\).*/\1/p' | sed 1q)
aopts="-c:a ac3 -b:a 640k"
##  Set default video settings:
vopts="-c:v copy"
##  Set default subtitle settings:
sopts="-c:s copy"

echo "$f -----> audio is $audio" | grep dts

    case "$audio" in
        aac|alac|mp3|mp2|ac3 )
##  If the audio is one of the MP4-supported codecs
                        echo "-----> no processing needed."
            ;;
        "" )
##  If there is no detected audio stream, don't bother
                        echo "-----> can't determine audio, skipping"
            ;;
        * )
##  anything else, convert
                         mv "$f" "$f"-1
             echo -e "\n -----> executing $ffmpeg -y -i $f-1 -map 0 $sopts $vopts $aopts $f"
             $ffmpeg -hwaccel auto -nostdin -y -i "$f"-1 -map 0 $sopts $vopts $aopts "$f"
                         fail=$?
                         case "$fail" in
                           "0" )
##  put new file in place
                           echo "-----> SUCCES"
                           rm -rf "$f"-1
                           chmod 666 "$f"
                           synoindex -D "$f"
               synoindex -A "$f"
                           ;;
                           * )
                           echo "-----> FAIL"
##  revert back
                           rm -rf "$f"
                           mv "$f"-1 "$f"
                           ;;
                         esac
          ;;
    emac

done