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frame aspect ratio for NTSC broadcast


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I need to render out an image sequence to be comped for DVD.

 

I've been told that I need the 720x486 D1 frame aspect ratio, but since my animation is set up for 16:9 AR (originally 640x360) I am confused how this is to be accomplished.

 

Do I need render out in 864x486 (16:9), and then squash it to 720x486, which will then look correct once it's made into DVD?

 

I've had this explained to me a couple of times already, but I can't seem to understand the underlying concept.

 

Does someone know of a good reference for this? Or can someone explain this to me in simple steps?

 

I would really appreciate this. Thanks

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ok, after a bit more research I've come to the conclusion that I have to render at 720x486 w/ a PAR of 1.2.

 

This will then be shown as the correct 16:9 FAR of 864x486 on the DVD.

 

can anyone back me up on this one?

 

Thanks in advance

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I highly recommend 720x480 for widescreen not 728x486!!!

 

any particular reason?

 

would it possible to do a batch action in P-shop if I need to convert 4500 frames from 720x486 to 720x480... I mean, because of the 1.2 PAR, would the image get any significant distortion? (doesn't really matter if it's off by a couple of pixels in this case, as far as I'm concerned)

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i wouldnt recommend a pshop action for this, because you would be modifying each image...

try a batch resizer like CoffeeCup PixConverter 2.5 or something like that

Photoshop can do batches too. Just point it to the right folder & tell it what action to do.

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