thanks to Josf . I succedd in partialy .
*mplayer well read directory which is done by dvsbackup .* *mplayer well read iso-image whidh is done by mkisofs .* and, *"sudo mplayer dvd://1 /dev/rcd0c" go well .* *but by home video , DVD is bigin to be read about 10 second or so but at last home video give up to read .* *Difficult .*
