1,85:1 etc aspect ratios, how much to add as borders?

[chazzie]

Hello fellas!

How much do I need to "black out" on a 4:3 DV source in order to get the following aspect ratios?

2.35:1
2.75:1
1.85:1
2.2:1
2.76:1

By "black out" I mean to ad borders to a regular 4:3 MPEG file. I might also encode the MPEG file as 16:9, but there's still a need for black borders. To make it 16:9, I just crop the frame when encoding.

Also, if anyone knows, I'd like both in NTSC and PAL, the number of pixels on the height to add borders to.

Thanx in advance for any answers.

[chazzie]

I've just gotta bump this one right 'ere