Thread: HD wide screen resolution - help :)

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  1. #11  
    Senior Member Aaron Lochert's Avatar
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    Quote Originally Posted by Karel Šimůnek View Post
    Thank you guys. All of you! One more question. If a movie is in theaters in 2.39:1. What's the resolution (aspect ratio) for home projection iTunes, Bluray etc. I know that Bluray is 3840x2160 but I'm interested in that aspect ratio of the movie in the middle of black bars :)
    Easy enough to do the math: 3840/2.39 = 1606.

    I've seen Marc say distributors prefer 3840 x 1600 though. That was a while back though so maybe things have changed.
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  2. #12  
    Senior Member Karel Šimůnek's Avatar
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    Yes that's right. But if a movie in theaters is in 2.39:1 which is 4096x1714 I can fit vertical pixels to 1600 but in that moment I have 3982 pixel horizontally. So I have to cut out 71 pixels from each side to have the resolution of 3840x1600. Am I right?
    KAREL ŠIMŮNEK
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  3. #13  
    Senior Member Aaron Lochert's Avatar
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    Again, 2.4:1 is wider than 2.39:1. If you scale your 2.39 master down to fit into the vertical dimension of a 2.4:1 project, you're going to have black bars on the left and right because 2.39 is not wide enough to cover. So instead you should scale that 2.39 master down to match the horizontal dimension of the 2.4:1 project. The frame will naturally crop out a negligible amount from the top and bottom.

    Rechecking your math:

    DCI scope is 4096 x 1716, not 1714

    If you scale 1716 down to 1600 that's 1716/1600 = 1.0725. Scale the horizontal by the same factor: 4096/1.0725 = 3819, which is less than 3840. So I'm not sure how you arrived at 3982.

    Really, the answer to all of this is that you should contact distributors and see if they have a preferred resolution for widescreen delivery.
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  4. #14  
    Senior Member Karel Šimůnek's Avatar
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    Thank you Aaron. I guess my math is pretty bad :D :D
    Thank you for everything. I think the full sensor is the best settings. Many pixels around to reframe it or stabilize the footage if needed :)
    KAREL ŠIMŮNEK
    RED SCARLET-W #996 "Phoenix"
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  5. #15  
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    Quote Originally Posted by Aaron Lochert View Post
    Easy enough to do the math: 3840/2.39 = 1606. I've seen Marc say distributors prefer 3840 x 1600 though. That was a while back though so maybe things have changed.
    Depends on whether it's theatrical or home video. 3840x1600 is more typical for a UHD release (or 1920x800 for HD), simply because the math is a little easier.

    But for theatrical, they generally want you to rigidly stick with the DCI standards. That would be 3840x2076 for 1.85 and 3840x1607 for scope. The distributors traditionally will give you written specs and generally insist that you stick to them to the letter. I'd say get it in writing and give them what they ask for, and ask questions if something doesn't make sense.
    marc wielage, csi • colorist/post consultant • daVinci Resolve Certified Trainer
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