letterbox formula?

This topic has 2 replies, 3 voices, and was last updated 14 years, 6 months ago by clara09.

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April 25, 2006 at 7:17 pm #200852

Alan
Participant

Hi,
whats the formula to calculate arbitrary letterbox pixel dimension for any given resolution?

for instance 2.25 letterbox in NTSC

Thanks,
Alan

April 25, 2006 at 11:42 pm #212952

Anonymous
Guest

720 / 2.25 = 320

720×320

April 26, 2006 at 7:46 am #212953

clara09
Participant

For NTSC and PAL which use non square pixels the height should be used to calculate
the letterbox.

Height x Current Aspect Ratio / Letterbox Aspect Ratio

486 x 1.33333 / 2.25 = 288
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