Does mpeg file contain the date and time of creation ?

Discussion in 'Amateur Video Production' started by j.r, Jul 31, 2007.

  1. j.r

    j.r Guest

    Hi

    I am producing a DVD from all my camcorder shooting.
    Does the MPEG file that extracted from the camera contain
    or can contain the creation date and time? same as JPEG contain
    information from the source.

    (I have hitachi dvd camera with DVD-RAM media or HDD)

    thank you
    J.R
     
    j.r, Jul 31, 2007
    #1
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  2. j.r

    Mike Kujbida Guest


    Unfortunately no. Once you edit it in any way, shape or form, that
    information is gone.

    Mike
     
    Mike Kujbida, Jul 31, 2007
    #2
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  3. j.r

    Jukka Aho Guest

    Does the camera record natively in the MPEG-2 format? (I presume it
    does, as it is a DVD-RAM based camera, and you used the term
    "extracted", so there is supposedly no conversion occurring.)

    If so, does it have a function by which it can recall the shooting date
    and time and display them on tv screen if the recorded DVD-RAMs are
    played back in-camera?

    If so, the information is obviously there in some format, but it is
    unclear whether there are easy tools for extracting it in some useful
    format, for further processing. But if the camera itself does not have a
    date and time display of any sort then it is questionable whether it
    will record that information in any form, either.

    Tape-based digital camcorders - those that use the (Mini)DV or Digital8
    format (or many of them, at least!) - do record the date and time
    information and there are software tools for extracting that information
    from the captured/copied/transferred DV files. That does not help you,
    though.
     
    Jukka Aho, Aug 4, 2007
    #3
  4. j.r

    Ken Maltby Guest

    Unfortunately, MPEG doesn't normally support "User" data or "Metadata".
    But it is possible that in creating the files, your camera added some. The
    main candidate would be TAG data for the audio stream. You could try and
    see if windows explorer can pick anything up by right-clicking on the
    column bar at the top of a folder with the files. Then selecting the
    "More..."
    to reveal the rest of the possible columns. Notice that there is a Title
    column
    listed on the first/default selection page and that on the "More..." page
    there
    are two Title columns available. The second Title is part of the TAG data,
    and if there is anything written in the correct TAG Title area of a file's
    header
    it will appear in that column if it is on the column bar. Your camera might
    have used one of the data elements listed or not, most likely not. MPEG
    doesn't support TAG data, as far as I know, but it doesn't mean it couldn't.


    ** Be aware that most of the data, for most of the columns, is not stored
    within the files themselves, but as file system, file reference data (like
    the file
    names in a folder) so, that data won't be available on any file system but
    the one that created the data. **

    If you check it out let us know what you find.

    Luck;
    Ken
     
    Ken Maltby, Aug 5, 2007
    #4
  5. j.r

    Ken Maltby Guest

    P.S. MPEG-4 does support Metadata TAG so I wonder what is
    available from AVCHD?
     
    Ken Maltby, Aug 5, 2007
    #5
  6. j.r

    tonsofpcs Guest

    Do note that it may just check the file creation date and other
    filesystem data created on the recorded disc.
     
    tonsofpcs, Aug 6, 2007
    #6
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