mpeg playback

I tried to playback mpeg files on my hp-ux 11.00 machine, but the following error occurs:

prounix_root:/opt/ogle/bin # ./ogle

Build: HP-UX B.11.00 A 9000/785  Tue Aug  6 16:14:56 MEST 2002
Runtime: HP-UX B.11.00 A 9000/785 
Note[ogle_ctrl]: ogle 0.8.5
Debug[ogle_ctrl]: Started /opt/ogle/lib/ogle/ogle_gui with pid 9987
Debug[ogle_ctrl]: Started /opt/ogle/lib/ogle/ogle_nav with pid 9988
Debug[ogle_ctrl]: Started /opt/ogle/lib/ogle/ogle_mpeg_ps with pid 9989
Debug[ogle_vout]: CLK_TCK: 100
Debug[ogle_ctrl]: Started /opt/ogle/lib/ogle/ogle_vout with pid 9990
vmg: attach_ctrl_data(), shmat(): Invalid argument
Debug[ogle_nav]: Opening DVD at "/tmp/titanic.mpeg"
libdvdread: Encrypted DVD support unavailable.
libdvdread: Can't open file VIDEO_TS.IFO.
vm: faild to read VIDEO_TS.IFO
Debug[ogle_ctrl]: child: 9988 exited with 1
Debug[ogle_ctrl]: pid: 9988 exited with status: 1
Debug[ogle_ctrl]: child: 9989 killed
Debug[ogle_ctrl]: pid: 9989 terminated on signal: 2
Debug[ogle_ctrl]: slaying child: 9987
Debug[ogle_ctrl]: slaying child: 9990
Debug[ogle_ctrl]: removing shmid: 1620
Note[ogle_ctrl]: exiting

any help

thanks Martin