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Activity Forums Adobe After Effects Aspect ratio situation, simple math question!!!

  • Aspect ratio situation, simple math question!!!

    Posted by Bosco Mattel on November 18, 2013 at 6:23 pm

    Hi there.

    I have a porblem with some footage, the client filmed in Red cam 5K , 5120X2700 which is a 1.9:1 aspect ratio I think, and when they pass me the footage proxies they convert the 5120X2700 1.9:1 aspect ratio to a 1920×1080 16:9, so the proxies have a black letter box. :S
    The final video needs to be 16:9 without letter boxes, the question is WHATS THE EXACT % OF SCALE I need to add in AE to eliminate those letter boxes?

    Thank you very much!!

    Walter Soyka replied 12 years, 6 months ago 2 Members · 5 Replies
  • 5 Replies
  • Bosco Mattel

    November 18, 2013 at 7:25 pm

    Hi Dave
    I need to deliver a 1080p videoclip. 16:9

    Thank you very much

  • Walter Soyka

    November 18, 2013 at 7:54 pm

    [Bosco Mattel] “The final video needs to be 16:9 without letter boxes, the question is WHATS THE EXACT % OF SCALE I need to add in AE to eliminate those letter boxes?”

    My back-of-the-napkin math suggests 106.7194%. Of course, this means you’ll be center-cutting, thus losing some of the frame on the edges — 64-65 pixels on each side.

    Walter Soyka
    Principal & Designer at Keen Live
    Motion Graphics, Widescreen Events, Presentation Design, and Consulting
    RenderBreak Blog – What I’m thinking when my workstation’s thinking
    Creative Cow Forum Host: Live & Stage Events

  • Bosco Mattel

    November 18, 2013 at 10:09 pm

    SOLVED, THANKS !

    1920 / 5120 = 0.375
    0.375 * 2700 = 1012.5
    1080 / 1012.5 = 1.06666666666667

    = 106.67%

  • Bosco Mattel

    November 18, 2013 at 10:10 pm

    THANKS

  • Walter Soyka

    November 19, 2013 at 2:15 pm

    In case you are curious why we got different results, I rounded the 1012.5 down to a whole 1012 before scaling up.

    Walter Soyka
    Principal & Designer at Keen Live
    Motion Graphics, Widescreen Events, Presentation Design, and Consulting
    RenderBreak Blog – What I’m thinking when my workstation’s thinking
    Creative Cow Forum Host: Live & Stage Events

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