first 1920 X 1080 comp


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first 1920 X 1080 comp
by mark wilkinson on Feb 9, 2007 at 1:58:33 am

i am working on a project building some graphics from scratch and they have explained that the piece is HD and that it is 1920 X 1080. if i am going to set up a new comp in AE do i just do it at those dimensions with the pixel aspect ratio at D1/DV NTSC (0.9) ? thanks

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Re: first 1920 X 1080 comp
by Andrew Kramer on Feb 9, 2007 at 2:36:55 am

HD is usually Square pixels.

Andrew

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Re: first 1920 X 1080 comp
by mark wilkinson on Feb 9, 2007 at 5:42:05 am

so i set up a sequence in FCP. a preset that is 1440 X 1080. i then rendered out a slug and brought it into AE. i dragged it to the "new comp" icon and it gave me a comp that is 1920 X 1080 with an aspect ratio that is "Non-square (1.33:1)" and a frame rate of 25 FPS.

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Re: first 1920 X 1080 comp
by BKM on Feb 9, 2007 at 2:14:41 pm

Why not try a 1920x1080 preset? It should give you a comp size of 1920x1080 with 1:1 pixels (square)

BKM

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Re: first 1920 X 1080 comp
by Steve Roberts on Feb 9, 2007 at 3:58:50 pm

Yep, 1920x1080 is 16x9 square pixels:

1920/16 = 120
1080/9 = 120

Since we have a common factor for height and width at 16x9, we're talking square pixels here. :) So use the 1920x1080 square pixel preset.

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Re: first 1920 X 1080 comp
by Dave LaRonde on Feb 9, 2007 at 4:28:04 pm

...yeah, and don't expect miracles out of AE when it comes to RAM previews and such.

An HD picture contains about 5 TIMES the pixels of an SD picture. 5 times the rendering... 5 times the RAM... 5 times the file size.

Welcome to High-Definition TV.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV

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Re: first 1920 X 1080 comp
by Marco Salsiccia on Feb 9, 2007 at 7:54:53 pm

Watch the Aspect Ratio when you create the 1440x1080 composition. It's going to stretch your pixels to the non-square 1.33 ratio as you saw when you brought the slug into AE.

Just make a 1920x1080 sequence in FCP and set the Pixel Aspect Ratio to square instead of leaving it at the 1440x1080HD preset.

---
Marco Salsiccia
Engineer of Insurrection
Digital Anarchy

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Re: first 1920 X 1080 comp
by mark wilkinson on Feb 9, 2007 at 11:21:58 pm

thats great. thanks for the info. im buidling away.....

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Re: first 1920 X 1080 comp
by mark wilkinson on Feb 9, 2007 at 11:24:23 pm

one other twist. i exported a slug from FCP using the preset there and it is 25FPS. the preset in AE is 24 FPS. what gives ?

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