AVS Forum Special Member
Join Date: Nov 2013
Location: Salem, Oregon, United States, Earth
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Doesn't progressive require about twice the bandwidth since all lines are being scanned per field instead of every other line? (480p60 = scanning all 480 or so lines per 1/60th of a second; 480i60 = scanning 240 or so odd-numbered lines for the first 1/60th of a second, followed by scanning 240 or so even-numbered lines for the second 1/60th of a second, and continuing flip-flopping between even and odd lines.)
I would like to see more of the SD channels go to 16:9, but it seems that too many movies that would benefit from 16:9 are center-cut (e.g., multicast network THiS TV) or letterboxed into 4:3 display area so they appear as "windowframed" or "postage stamp" on the 16:9 TV (such as the various SD movie channels since, at least locally, several premium movie channels have 1 to 3 HD feeds on Comcast and the other feeds are SD, and also the PBS station letterboxes their second stream of programming into 4:3.).
What I don't know is if the bottom-of-the-line SD DTA for cable systems can take an SD 16:9 signal and either letterbox or pan-and-scan for its NTSC (4:3) output on channel 3 or 4, or be able to interlace an ED (480p) signal for NTSC. Since most over-the-air broadcasts are viewed through cable/satellite services, and many customers have decided to go with just minimal SD service for at least one of their TVs, this probably has a bearing on what formats a TV station chooses to broadcast.
We tend to forget that we are not representative of the TV viewing public at large, but rather we are a self-selective group that, on average, desire better picture and sound than the average viewing public and, to a degree, willing to pay more for a better experience.
(My cable experience has been with analog cable, and then I jumped to HD service with a HD DVR when Comcast killed the analog feeds, so I don't know the limitations of DTAs from personal experience.)