Re: 1920x1080 Mode
- From: Randy Yates <yates@xxxxxxxx>
- Date: Sun, 31 Jul 2005 02:50:45 GMT
Jeff Rife <wevsr@xxxxxxxx> writes:
> There is no difference in bandwidth required for 1920x1080/60i vs.
> 1280x720/60p (which Fox, ABC, and ESPN-HD all use), at least as far as
> cable systems are concerned: both take 3MHz.
I'm not sure I understand your syntax. Does the "c" in "a x b/c (i/p)"
mean the frame rate or the field rate? If it means the frame rate,
then according to table A3 of the August 2001 ATSC specification,
there is no 1920x1080/60i mode, only 1920x10280/29.97i and
And I would sure think there is a difference in encoded bitrate between
1920x1080/30i (or 1920x1080/30p for that matter) and 1280x720/30p. And,
of course, bitrate translates to bandwidth.
% Randy Yates % "Though you ride on the wheels of tomorrow,
%% Fuquay-Varina, NC % you still wander the fields of your
%%% 919-577-9882 % sorrow."
%%%% <yates@xxxxxxxx> % '21st Century Man', *Time*, ELO