Mini DV Tapes (do I need to erase before re-using?

Discussion in 'Video Cameras' started by melianbriggs, Feb 5, 2007.

  1. melianbriggs

    melianbriggs Guest

    Hello Everyone!

    I have finished with my first miniDV tape and wondered how I go about
    re-using it. Do I treat it the same as a video/audio cassette and
    simple record over the existing content? Or do I need to erase it
    first? I have looked through my DCRHC35E Handycam Instruction Manual
    but it says absolutley nothing! I am not sure and know that this is
    the place to get the info required.

    Thanks - melianbriggs
     
    melianbriggs, Feb 5, 2007
    #1
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  2. melianbriggs

    Tony Morgan Guest

    You don't have to erase before reusing a tape.

    However, the End Search and Edit Search functions *may* not work
    properly unless the tape is first erased before reusing.
     
    Tony Morgan, Feb 5, 2007
    #2
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  3. melianbriggs

    melianbriggs Guest

    How do I erase? I know it sounds a bit newbee - but thats what I am
    and there is no instructions in my user manual!
    Help!
     
    melianbriggs, Feb 5, 2007
    #3
  4. melianbriggs

    melianbriggs Guest

    What is "black level - and how do I do this? It sounds like I record
    with the lens cap on or something to that effect!
    Sorry, I am a proper novice. Surely it's not that obvious. Nothing
    seems simple when it comes to technology!
    Regards - melianbriggs
     
    melianbriggs, Feb 5, 2007
    #4
  5. melianbriggs

    :Jerry: Guest

    Yes, put the lens cap on, assuming that it is a true light-proof cap
    [1] and put the camera into record.

    [1] some camcorders use a translucent white lens cap.
     
    :Jerry:, Feb 5, 2007
    #5
  6. melianbriggs

    G Hardy Guest

    What is "black level - and how do I do this? It sounds like I record
    I'm afraid it is that simple.

    Many people recommend "striping" a tape before its first use - laying down a
    continuous timecode for the length of the tape to make subsequent capture
    easier.

    If you don't mind using Windows Movie Maker to capture your DV it seems to
    cope with the "ambiguous" bits of tape where there's no footage recorded -
    it just pauses the capture until something worthwhile comes along. My
    regular capture program just stops capturing at the first chunk of
    unrecorded tape.
     
    G Hardy, Feb 5, 2007
    #6
  7. melianbriggs

    G Hardy Guest

    As you worked out in your other post.

    If you capture the entire tape at each capture session, it' not something
    you need to worry about.
     
    G Hardy, Feb 5, 2007
    #7
  8. melianbriggs

    G Hardy Guest

    Forgive my ignorance, but why does the translucency of the cap make any
    difference? As far as I was aware, you were just laying down a timecode for
    the duration of the tape. The actual content (audio and/or video) was
    irrelevant.

    When Tony mentioned "black level" I thought there must be more to it than I
    understood...
     
    G Hardy, Feb 5, 2007
    #8
  9. melianbriggs

    Just D Guest

    Many people recommend "striping" a tape before its first use - laying down
    It was a very good advice for the analog recording (regardless just audio or
    video as well) to decrease the S/N levels, but for digital... I'm not sure
    that it's required. Also I wouldn't kill my camcorder just overwriting these
    tapes again and again. Finally who knows how the "black" record that should
    be done will relate to the next record that should be done over it.

    The ideal scenario in my mind should be different, I did it many times for
    my audio and analog video tapes many years ago before the digital century
    came. There is a special throttle (like a magnet) wide or almost flat,
    depending on its construction) powered with the AC wall outlet 110, 120,
    240, 50-60 HZ. It produces the magnetic field around enough to destroy any
    records on the tape just in seconds. The trick is to avoid any residual
    magnetization after this procedure. To do that it's pretty enough to move
    this variable magnet around the tape closing it little bit with each new
    loop to the closest distance, after a few seconds same but backwards finally
    moving away to a meter or longer before it can be shut off. Hopefully I
    explained the whole process correctly to let you understand what I was
    doing. It's not very easy without a picture. I learned this trick from
    professionals many years ago. They were able to record excellent audio tapes
    without any noise. When I bought this device and tried it myself I found
    that there is a huge difference if I used the original tape from the store
    or demagnetized tape. Also there is another usage - to make any tape clean
    just in seconds.

    Just D.
     
    Just D, Feb 6, 2007
    #9
  10. melianbriggs

    Jwestin Guest

    What Harry is suggesting about recording a "black level" on the tape is
    useless for you as youve already used the tape. This is only of any use if
    you do this with new tapes that youve not recorded on yet.
     
    Jwestin, Feb 6, 2007
    #10
  11. melianbriggs

    Tony Morgan Guest

    Perhaps I shouldn't have used the word "erase" which might confuse. What
    I was suggesting (like several people have mentioned) is to over-record
    the tape with the lens cap on. Because my camcorder is fairly well
    balanced I just stand it up on end on its lens cap, and over-record the
    tape. People have used the term 'black level' which also might confuse.

    Don't get confused - it really is that simple :)
     
    Tony Morgan, Feb 6, 2007
    #11
  12. melianbriggs

    Tony Morgan Guest

    I made NO mention of 'black level".
     
    Tony Morgan, Feb 6, 2007
    #12
  13. melianbriggs

    Jwestin Guest

    Oh great Tony tell everyone to stand there camcorders on end lense side down
    just like it tells you not to do in most user manuals!! im sure being the
    great man you are you know why!
     
    Jwestin, Feb 6, 2007
    #13
  14. melianbriggs

    :Jerry: Guest

    AIUI recorded black is safe should something go astray with the erase
    head / function whilst recording the new scenes, if you record white
    you could well get that bleaching through IYSWIM.

    Personally I'm not a fan of re using tape stock, one for the above
    reason and the other is that I'm never 100 percent sure if I will
    never need any of the footage that would be wiped.
     
    :Jerry:, Feb 6, 2007
    #14
  15. melianbriggs

    :Jerry: Guest

    Rubbish, although there is already TC in the tape there is also the
    old data, certain problems with the tape alignment / erase heads can
    cause previous data to bleed through, causing data issues with the new
    recording - whilst I would agree that this is of slight risk it's
    still a risk and could well wreck a whole film (the cost being either
    priceless or the cost of re visiting the location).
     
    :Jerry:, Feb 6, 2007
    #15
  16. melianbriggs

    :Jerry: Guest

    But 'black' is the correct term Tony, you are not erasing the tape (as
    you say), you would need a magnet to do that, what you are doing is
    recording 'Black' - technically slightly off 'black in (North America)
    NTSC land [1] - to the tape (with or without TC, in the case of old
    domestic analogue tapes). I would suggest that not using the term
    "Recording black (level)" and the slopping use of the word 'erase' is
    what is causing confusion - oh, that and the *probably* reappearance
    of a troll in this thread... :~(

    [1] the infamous 7.5% IRE set up rather than 0% IRE.
     
    :Jerry:, Feb 6, 2007
    #16
  17. melianbriggs

    G Hardy Guest

    Sorry, Tony. My bad.

    I replied to this one after replying to another of yours. Jerry snipped the
    relevant, bit - but I know that's no excuse.
     
    G Hardy, Feb 6, 2007
    #17
  18. melianbriggs

    G Hardy Guest

    I would on analogue, but this is digital. I have occasionally had dropouts
    where previously recorded stuff blips through, but white or black would have
    been equally preferable over the bride from another wedding that did show
    through. For one frame. I missed it - but the recipient of the DVD didn't!

    Tell me about it. I've just had a bride write 15 months after signing off
    her DVD, asking for changes. Trouble is, it's only 1½ days after I ditched
    all the master tapes.


    * Name changed in quote to correct my attribution error.
     
    G Hardy, Feb 6, 2007
    #18
  19. melianbriggs

    :Jerry: Guest

    Err, did I?...
     
    :Jerry:, Feb 6, 2007
    #19
  20. melianbriggs

    G Hardy Guest

    "Harry Broomhall" wrote in message
    ....But that's only useful if the tape has unrecorded sections, which in the
    case of a new tape, is the entire tape. If your DV tape has already been
    recoded in its entirety without any blank sections, irrespective of the
    number of recording sessions, then there's no benefit (that I can see) to
    striping.

    From my simplistic understanding, there are two timecodes laid down, the
    tape counter and the timedate. "Striping" is an attempt to get a continuous
    tape counter on the tape, and that counter remains unchanged when
    re-recorded.
     
    G Hardy, Feb 6, 2007
    #20
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