DVD ISO -> MP4

#!/bin/bash
MOUNT_DIR="/media/iso"

filename_full=$(echo `cd \`dirname "$1"\`; pwd`/`basename "$1"`)
filename_nopath=$(echo `basename "$1"`)
filename_noext=${filename_nopath%.*}

if mount | grep $MOUNT_DIR > /dev/null; then
  echo " - Unmounting volume $MOUNT_DIR"
  umount $MOUNT_DIR
fi

mount "$filename_full" "$MOUNT_DIR" -t udf  -o loop

featureNumber=$(dvdbackup -I -i "$MOUNT_DIR" 2> /dev/null | grep 'Title set containing the main feature is' | sed 's/[^0-9]//g'  )
featurePadded=$(printf "%02d" $featureNumber)
files=$(find "$MOUNT_DIR/VIDEO_TS/" | grep $(echo "VTS_"$featurePadded"_[1-9].VOB") | sort | tr '\n' '|' | sed 's/|$//g' )

ffmpeg -i "concat:$files" -y -acodec libfaac -aq 100 -ac 2 -async 1 -vf "scale=480:-1" -vcodec libx264 -crf 24 -threads 0 ./"$filename_noext".mp4