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  • 24p -detect and edit headache

    Posted by Ninetto Makavejev on September 8, 2007 at 9:17 am

    OK, it’s the weekend when normally nobody should have to deal with this: I received a DVCAM-tape to be subtitled by Monday, and due to some strange behavior and other clues, I believe that this tape is recorded in 24p. Is there some way I can conclusively get this info out of a capture in PremPro? The DVCAM tape is labeled as a copy from a HDCam master…

    The logic behind editing 24p on DVCAM (DV being “interlaced” by definition) is still baffling to me… but most important would be a way to detect that this is indeed a 24p tape. Of course the label on the tape was useless, as is any other “normal” channels of communication: the good old telephone call to the prod.company… They don’t know dick about the product they are supposed to be producing.

    Any ideas would be greatly appreciated!
    regards,
    ninetto

    Darren Edwards replied 18 years, 8 months ago 2 Members · 5 Replies
  • 5 Replies
  • Darren Edwards

    September 8, 2007 at 11:21 am

    There’s a standard-def ‘Panasonic 24p’ driver
    available for PPro. It’ll allow you to ingest
    and work in 23.98fps without any hassles. It
    even does 2:3:3:2 pulldown for monitor previewing.
    Search around adobe.com for it.

    Not all DVCAM hardware is unavoidably interlaced.
    Our DSR450 records a lovely 25p image to DVCAM
    and miniDV.

    Darren.

    x-gf.com

  • Ninetto Makavejev

    September 8, 2007 at 1:46 pm

    Interesting… although I wonder if the “good results” of your DSR450 can be played on other DV players with equally good results? How is the compatibility of the 24p-flavors from device to device?

    I still am curious if there is any method to determine how/what-format was recorded on the DVCAM tape I have here, as I believe the tape I have is labeled incorrectly…or more specifically: it has no technical notes, regarding format. And I have to finish this job by monday.

    Is there a method of determining this?
    And; what happens if I capture 24p material incorrectly, let’s say as standard ntsc-dv @ 29.97 with the Prem preset?

    Maybe Premiere is smart enough to recognize the 24p format, and would otherwise refuse to capture the material as normal dv?

    thanks in advance,
    ninetto

  • Darren Edwards

    September 10, 2007 at 2:13 pm

    – Interesting… although I wonder if the “good results”
    – of your DSR450 can be played on other DV players with equally
    – good results? How is the compatibility of the 24p-flavors
    – from device to device?

    Where did you get “good results” from? I called them ‘lovely’.
    Our old 450 is ageing quite nicely, I have to say, especially
    with a good HD lens on the front. It’s not HD, or even digibeta,
    but anyhoots: aside from the world of pain which is our Z1e’s,
    the 450 is the only DVCAM appliance left in the studio, and as
    it doesn’t do 24p without an expansion board, I can’t comment on
    capatibility with other players (by this I assume you mean DVCAM
    VTRs, were there shouldn’t be any issues, anyway. Playback
    from miniDV camera might have the usual DVCAM/MiniDV mechnical
    speed-of-recording conflicts, of course.)

    – I still am curious if there is any method to determine how/
    – what-format was recorded on the DVCAM tape I have here, as
    – I believe the tape I have is labeled incorrectly…or more
    – specifically: it has no technical notes, regarding format.
    – And I have to finish this job by monday.

    Well, it’s Monday as I write, so hopefully you got it sorted.
    Although, as it would only take a couple of deductive trail and
    error minutes to ascertain if you’re footage was 23.98 or not, I’m
    not sure what the problem is. You grab that Panasonic 24p plugin,
    open a 24p project and try capturing the footage. If it
    doesn’t work, it’s either been downcoverted badly, or, your
    VTR is not fit for the job. The 24p preset looks like this,
    by the way:

    Edit-suites were never built to auto-detect frame rates,
    although this is now academic with FCP 6 and AVID where it’s
    possible to drag mixed frame-rate, mixed definition footage onto
    the timeline – which is an amazingly exponential evolution,
    really.

    – Is there a method of determining this?

    High-end VTRs and monitors are configurable to different frame
    rates.

    – And; what happens if I capture 24p material incorrectly, let’s say
    – as standard ntsc-dv @ 29.97 with the Prem preset?

    Try it and find out. You’re PC won’t blow up as a result. You’ll
    either get nothing, or more probably, stuttery playback in
    need of pulldown.

    – Maybe Premiere is smart enough to recognize the 24p format, and
    – would otherwise refuse to capture the material as normal dv?

    If you’ve the Panasonic codec installed it doesn’t need to be smart
    enough. For future purposes: if you can’t find the plugin online
    let me know and I’ll root around my archive folders for it.

    Cheers,
    Darren.

    x-gf.com

  • Ninetto Makavejev

    September 12, 2007 at 2:20 pm

    Thanks much for your useful info, Darren.

    Disaster was avoided after all: the tape I was dealing with turned out to be a “normal” albeit poorly down-sampled 29.97 NTSC DvCam tape.

    best regards,
    ninetto

  • Darren Edwards

    September 13, 2007 at 12:03 pm

    Glad to hear it turned out okay. Most have us
    editors have one of this ‘oh, for f**k’s sake’
    moments at least once a week. For me, this
    week’s was all about screen-capturing Google
    Earth animation. Camtasia was rubbish, Fraps
    was better.

    Cheers,
    Darren.

    x-gf.com

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