vobcopy -l -i /dev/sr0 -n 4 -o /tmp -t dvd
dtach -A /tmp/ffmpeg.sock \
ffmpeg \
 -analyzeduration 200M -probesize 200M -i /tmp/dvd4.vob\
 -map 0:v:0 -map 0:i:0x80\
 -map 0:i:0x20 \
 -metadata:s:a:0 language=eng -metadata:s:a:0 title="English - Stéréo"\
 -metadata:s:s:0 language=fra -metadata:s:s:0 title="Francais" \
-c:a copy -c:v libx264 -c:s copy \
-vf yadif \
 REDUX_DISC_2.mkv