Cruise Pictures..."Unknown File Format"?? Uh oh!

Discussion in 'Digital Cameras' started by Monica, Jan 22, 2006.

  1. Monica

    Monica Guest

    I just got home from a week long cruise and 3 128mb smart media cards full
    of lifetime memories. One of the cards was full of "unknown file format"
    error messages. All the pictures but one were corrupt. I used PC Inspector
    Smart Recovery program to successfully recover 95% of them but a few were
    just partially recovered. Elements can't open it because of "unknown or
    invalid jpeg marker type is found". Irfanview says "unknown file format"
    and PSP 9 says it's not identified as a supported type. Is there any
    recovery program that might be able to load ALL of those few that just
    partially loaded? Before leaving for our cruise, I formatted all the cards
    in the camera. This particular card had an .avi movie on it that doesn't
    appear on the card now. I reviewed it on the camera earlier this week but
    it doesn't show up in the DCIM folder.
    Thanks,
    Monica
     
    Monica, Jan 22, 2006
    #1
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  2. Monica

    Monica Guest

    Forgot to mention that once I recovered the photos, the partial photos show
    complete in thumbnail size....enlarge it and it's part picture and part
    gray.
     
    Monica, Jan 22, 2006
    #2
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  3. Monica

    Dave Cohen Guest

    PhotoRescue is proably a better recovery program, but where you recovered
    such a high percentage of what was on the card I doubt if it would do any
    better in this case. I agree with Ron below, be very careful no writing is
    taking place when you remove the card.
    Dave Cohen
     
    Dave Cohen, Jan 22, 2006
    #3
  4. Monica

    Monica Guest

    Thanks guys. I was fairly certain I'd gotten all I was going to get.
    Thought just I'd ask to make sure. After emailing, I noticed the file size
    on those that didn't completely turn out. They're small (<200kb) so there's
    nothing there to "recover". I have (2 actually) Oly 2100UZs (UZi). I try
    to be very aware of turning the camera off after all writing is stopped. I
    have a digipack power supply instead of batteries....oh, you know what!
    Come to think of it, on this last card there was 3 or 4 times that the
    camera indicated the card door was open :eek: It didn't appear to be but maybe
    it was just enough to cause the error message. Hummmm, I'll have to watch
    that. Thanks again for your replies.
    Monica
     
    Monica, Jan 22, 2006
    #4
  5. Monica

    Martin Brown Guest

    If they were about the right size then it may be possible to recover
    them provided that most of the data is intact. Obviously if they are too
    small then the rest has been lost for all eternity. But worth trying on
    the original media with PhotoRescue just in case their heuristics find a
    few files that another package has missed. Each one has its strengths.

    It only takes a few bytes of unlucky damage to a JPEG stream to render
    it totally undecodable (that is a price you pay for efficient
    compression). Some can be repaired but unfortunately the JPEG repair
    process is not cost effective for holiday snaps.
    One thing that can trash a memory card is when their is an intermittent
    or dirty electrical contact on it. But by far the most common causes are:

    1. Ejecting the card from a socket whilst a write is still in progress.

    2. Inserting it into a card reader after physically ejecting another
    card but without explicitly demounting the volume (for some strange
    reason Windows does not always honour the media changed flag). If this
    happens you get the old directory info smashed down on top of the new
    card - not good.
    You should try to figure out what caused the failure to prevent it
    happening again. If you only lost 5% you were quite lucky this time.

    Regards,
    Martin Brown
     
    Martin Brown, Jan 23, 2006
    #5
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