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  • Progressive Woes

  • Francis Hughes

    December 5, 2008 at 1:07 pm

    Hi All,

    Basically my camera op filmed a presentation in 25p instead of 50i. In the shot there is a projector screen, that as a result of being shot in 25p it has blue lines running the length of the screen that ‘wobble’ back and forth. Is there anything I can do?

    Here is a screen cap if that helps

    https://img84.imageshack.us/img84/1599/25pwobblerh6.png

    Many Many Thanks

    Francis

  • gary adcock

    December 5, 2008 at 2:17 pm

    [Francis Hughes] “Basically my camera op filmed a presentation in 25p instead of 50i. In the shot there is a projector screen, that as a result of being shot in 25p it has blue lines running the length of the screen that ‘wobble’ back and forth. Is there anything I can do? “

    That issue has nothing to do with P vs. I

    It is what I would call a synchronicity issue- the the shooter did not try to set the camera properly to capture a projected or on screen image “in sync” so that the interlace lines do not look as if they are in moire.

    and No I do not think there is anything you can do afterwards but strangle the cameraperson (or drop in a new image in post)

    gary adcock
    Studio37
    HD & Film Consultation
    Post and Production Workflows

    Inside look at the IoHD
    https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php

  • Francis Hughes

    December 5, 2008 at 3:34 pm

    Thanks Gary,

    I was afraid that might be the answer. Sadly it was a combination of two camera ops, one who was not sure what setting it should be on, so he asked the other what setting should it be on. This is sounding more and more like a bad joke…

    Basically one cam op said to the other it does not matter what setting you have it on. I know its enough to make you want to find a corner to cry in.

    Thanks again for the info.

    Francis

  • david bogie

    December 5, 2008 at 3:50 pm

    Get the prezo and do cuts to the full screen slides. You can, if the job is important enough to you, replace the screen image with a properly distorted layer or, like we used to do in the olden days, we’d simply key or wipe in a full image like an over-the-shoulder graphic.
    If you can’t get the prezo file, you can recreate most of the slides in Livetype, After Efefcts, Photoshop, or with basic text tools in FCP. A simple cost/benefit calculation should easily determine which method saves the project for your client.

    bogeisan

  • Francis Hughes

    December 5, 2008 at 3:55 pm

    Thanks David,

    Sadly the speaker is in front of the projection for all of the presentation. I dont think it would be worth it I think we will have to just apologies and be thankful that at least the camera op got his act together and changed back to 50i after the morning session (two 3 hour presentations shot at 25p).

    Thanks for the reply!

    Francis

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