#Pixel aspect discrepancy
29-Nov-94 13:20:17
Sb: #138210-#Pixel aspect discrepancy
Fm: Paul Lempke 71460,1037
To: Don Landis 71673,3612
RE: Video resolution
Exactly! or, I hope you had that reply handy and didn't type it in on my
account. Actually, I was embarressed to see that I had miss-stated the
vertical frequency to be 525 lines/sec when it is 525 lines/frame -oops. I
think my point was: since no one makes framebuffers that display more or less
than 1 pixel/scan line, that the vertical cropping differences ( 480 vs 482 vs
486 ) create minor discrepencies in the calculation of aspect ratios ( the
question I was humblely addressing ):) In other words, calculating based on a
4×3 ratio will have small, usually insignificant variance from published
framebuffer specs which are based on the actual pixel frequency on each line.
Thanks for the reply, I'm not sure which part of my message that you didn't
like -just the incompleteness?
Paul Lempke -Rising Star Graphics