Latest post Thu, Aug 14 2008 9:35 PM by MichaelP. 3 replies.
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  • Wed, Aug 13 2008 6:47 PM

    • Pixel Monkey
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    1080i mixing with 720p

    I know, it's a popular question. However with a different twist.

     

    Beginning to shoot a doc next week. Panny 900 camera. Interviews and half the B-Roll will be 720 shot in 24p with a 180 shutter. Nice look.

    Other half of the B-Roll will be 1080i shot 60 and no shutter - the intention to be slowing it all down to 25% speed and using FluidMotion. Ran some tests on this and it's a beautifully smooth look.

     

    Of course all this begs the workflow question, and how a Media Composer Adrenaline will best work with combining the two. Here are my choices. PLEASE add to them if you know a better one!

    Option 1.) Ingest all the 1080i into a 1080i project. Slow it down, apply the effect and render. Lay to tape. Start a 720p 23.976 project (the master project for the doc) and ingest the 1080i tapes.

    Option 2.) Do the reverse. Start a 720p 23.976 project. Ingest all material into it, no matter how it was shot. Finish the edit. Create a list of 1080i shots used. Create the 1080i project and just manipulate the footage needed in the doc.

     

    Note - tried transcoding. It puts bad, fuzzy-looking interpolation artifacts in the shot. Crisp lines get small, jagged horizontal distortions.

    MCA 2.8.1. (I know, I need to upgrade. Keep your shirt on!) HPxp8400 Workstation. QuadroFX 1500. Workgroup Manager for MediaNet 5.0; Avid Interplay... [view my complete system specs]

    Pixel Monkey

    www.alwaysediting.com

     

  • Thu, Aug 14 2008 2:59 PM In reply to

    • MichaelP
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    Re: 1080i mixing with 720p

    You could have either 25% slomo or a 2.5x slomo. have you tried:

    Import 1080i into a 1080i project.

    FluidMotion as needed. Make 30p or 60p depending on settings

    Export as QT ref

    Import into 720p/23.976 with following console commands:

    setresizetype 9
    ingoreqtrate true

    then import the QT. The result will play back as 23.976.

     

    Michael

    HP 8600 Symphony Nitris DX v3 || MBP 15" Media Composer v3 [view my complete system specs]
    ____________ Anything 24fps
  • Thu, Aug 14 2008 9:28 PM In reply to

    • Pixel Monkey
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    Re: 1080i mixing with 720p

     

    it's been a while since I've entered console commands. Will both the setresize 9 and the ingoreqtrate true command need to be entered into the console for every boot-up, or just once? If just once, will I need to enter some disengaging commands when I'm done?

    Dig the QT Regerence idea though. That was an "Oh duh... Yeah, sweet!" moment.

    You sure about 30p and 60p, not 30i and 60i? (I'm sure you are, but I'm just checking.)

    MCA 2.8.1. (I know, I need to upgrade. Keep your shirt on!) HPxp8400 Workstation. QuadroFX 1500. Workgroup Manager for MediaNet 5.0; Avid Interplay... [view my complete system specs]

    Pixel Monkey

    www.alwaysediting.com

     

  • Thu, Aug 14 2008 9:35 PM In reply to

    • MichaelP
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    Re: 1080i mixing with 720p

     I believe they need to be entered at each boot up, but to reverse them you would do

    setresizetype 8
    ignoreqtrate false

     

    What I meant by 30p or 60p is the result of the fluidmotion you apply to the material depending on amount of slomo you want to create:

    1080i -> 1080 30p = 25% slomo
    1080i -> 1080p/60 (50% slomo in timeline) = 2.5x slomo

    The P is only how the frames are constructed in the timeline meaning they are frame based so when exporting as QT and importing, you will have removed the interlace nature of the original footage.

     

    Michael

    HP 8600 Symphony Nitris DX v3 || MBP 15" Media Composer v3 [view my complete system specs]
    ____________ Anything 24fps
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