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exporting images for NTSC

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Judy Ranelli
exporting images for NTSC
on Jul 19, 2007 at 4:28:45 pm

What are the steps to create and save a .png file so that it will correctly import into a non-linear editor (NTSC video) with the correct aspect ratio?

I'm trying to get my head around the square/non-square pixel problem, and not succeeding... ;-)

I import into my video app at 720x540.


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Darby Edelen
Re: exporting images for NTSC
on Jul 19, 2007 at 6:58:38 pm

[Judy Ranelli] "I import into my video app at 720x540."

The resolution of NTSC DV is 720x480 (D1 is 720x486).

If you're using 720x540 PNGs then you want to make sure that they do not use pixel aspect ratio correction in Photoshop.

When you bring your Square Pixel 720x540 image into an NLE you will then need to fit it to the Sequence/Composition/Timeline's NTSC resolution, in effect squashing your 720x540 image down to 720x480 and giving it the proper pixel aspect ratio to be correctly interpreted on a standard NTSC device.

Most programs have a function to fit footage to the correct resolution.

Darby Edelen
DVD Menu Artist
Left Coast Digital
Aptos, CA


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Richard Harrington
Re: exporting images for NTSC
on Aug 3, 2007 at 1:03:20 am

There's A LOT more to this....

Start here
http://www.photoshopforvideo.com/blog/files/psvpresets.html


Richard M. Harrington, PMP

Author: Photoshop for Video, Understanding Adobe Photoshop, and ATS:iWork


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