On Mon, Feb 10, 2003 at 10:53:41AM -0500, Matto Marjanovic wrote: > > I would suggest starting here: > > http://www.mir.com/DMG/aspect.html > > and see what gets answered. (Not everything, but it is a start.)
Cool. Maybe I should try this from another angle, given that I
capture at 352x480, and say, by experimentation, that I discover that
I need to crop 57 lines from the top and 57 lines from the bottom to
be rid of the black, bit-wasting bars.
Maintaining field parity is very important, and assuming that when
given the parameter of "-fs" MPlayer _centers_ the image veritcally, I
really should only crop either 56 or 58 lines so that an odd field
starts on a odd line and and even field starts on an even line. Is
this a correct assessment?
Now given that my frame height is now 368 (480 - 56 - 56) and width is
704 with a pixel ratio of 10:11, and my formula for arriving at the
display aspect ratio being:
width * 10
---------- : height
11
my display aspect ratio for 704x368 would be (704 * 10 / 11) / 368
(aka 640:368) which is 1.7391.
Did I get anything incorrect?
b.
--
Brian J. Murrell
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