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What's wrong with this disc?

Discussion in 'DVD±R media' started by ikodel, Jul 5, 2007.

  1. ikodel

    ikodel Member

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    My friend has just come back from holiday where he took his Sony DVD-92E DVD camcorder to record some footage.

    The problem is that one of the Memorex DVD-RW discs he used to record footage cannot be accessed by his new Dell laptop DVD reader or his standalone DVD player. He gave me the disc to try, and I cannot access it in either my laptop DVD reader or my external Philips Dual Layer DVD-RW drive.

    Windows XP which we both run, just shows the normal empty drive icon in 'My Computer'

    The disc however, plays back and is readable fine on his camera.

    Also, the disc has been Finalized.

    Now there is some debate whether this camera has either a useable Firewire port or USB port to drag data off the disc when it is in the camera's drive.

    Most people think that the cameras 'hidden' sockets are only used as Sony service sockets and are not for public use.

    So my question (finally)

    Is there any software or hardware solution availble to read this disc?

    Has anyone heard of this problem before, and what actually has gone wrong?

    If you can be bothered to read, the debate on the Sony camera is here http://www.camerahacker.com/Forums/...mera/Sony/usb_drivers_for_sony_dcr-dvd92.html

    Thanks for any help.
     
  2. attar

    attar Senior member

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  3. ikodel

    ikodel Member

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    Thanks mate...I'll give that a try.
     
  4. ikodel

    ikodel Member

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    Unfortunately, the software didn't help.

    I put the disc in my external Philips DVD-RW drive and then opened Nero Burning Rom software to identify the disc.

    Nero reported the disc back as a DVD-RW disc with a single session even though the disc cannot be seen by Windows.

    So then I thought, I'll try and copy the disc to the hard drive and then mount the disc image with Daemon Tools.

    When the copy process began, Nero just kept reporting sector errors on pretty much every sector of the disc.

    So then why is the disc readable in the Sony camera that created it?

    The copy process finished after 3 hours but the resulting image was unmountable and unreadable.

    Anything else I can try?
     
  5. JVC

    JVC Active member

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    Next time, use a -R disc, instead of an -RW disc.
    RW disc are unstable, and a lot of drives can't read them. You can see if there's a firmware upgrade for your computer drive, that may add that functionality to it.

    Also send emails to the manufacturers of the different drives, and see if they have an answer........
    Good luck!
     
  6. ikodel

    ikodel Member

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    The Philips DVD-1640 drive I have has no issues reading other DVD-RW discs so I don't think that's the problem.

    Saying that, I have never used Memorex before and won't in the future.

    Does anyone know how I can rip the data off this disc with some other hardware?

    Are there any DVD camcorders that have a Firewire or USB2 socket for data transfer?

    Perhaps they also will be able to read this disc.

    Any help appreciated.
     
  7. attar

    attar Senior member

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  8. JoeRyan

    JoeRyan Active member

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    If your camcorder can write and read the disc, there appears to be nothing wrong with it. However, rewritable media have lower levels of reflectivity than DVD-R discs have. The Sony may have written the disc so that the difference in reflectivity is enough for it to work but not enough for other drives to read the disc. You will probably have better luck with DVD-R discs than with DVD-RW.

    The other issues are those of finalization and the VR format, both issues which make the trouble shooting complex. The fact that the disc records and plays on the Sony indicates that the Sony and the disc are not at fault, but there is something else that prevents the disc from being read. You might try finalizing the disc a second time--unfinalize it first. The other method is to try to capture the video from the camcorder through a FireWire or USB 2.0 connection. Since the Sony plays it, the files should transfer.
     
  9. JeriV

    JeriV Guest

    Try Copying the disc onto a R+ or R- and get away from the Rewritable Disc.
     
  10. JVC

    JVC Active member

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    How is he gonna do this, if the drives won't read the disc?
    Did you even read the original post?
     

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