BFG said:
You can see the difference with any set. Just because your set may not have 1920 lines of horiz resolution doesn't mean you can't see the difference from a source that has 1920 or 1280. It's the same reason you'd see a difference in 480i SD. The less you receive the worse it looks regardless of display
Just curious, what type of display do YOU watch HDTV content on?
I use a Dwin TV3e with a 92" wide screen in a light controlled HT room. Therefore my pixel depth resolution is limited to 1280 and test patterns with an RGBHV signal from a test generator confirm that there is nothing resolved higher than 1280. Actually the visual resolution tests indicate slightly less at 1200 pixels rounded off. I also recently purchased a small 24" LCD computer monitor for my edit suite It is said to be 1200x1920 pixels but I have not yet put the pattern generator on it to see what it really can do. However with a. RGBHV signal from a computer in native resolution, I see a degree of artifacting that would tend to degrade the H res at the upper end. I don't have a digital connection (DVI) for it so that may be necessary to actually see the resolution into the range of 1920.
One of the problems I see in lay interpretation of the down res myth is that so many people do not have the ability to truly evaluate what they see and understand what the real limits are and where they originate from. In discussion with expert engineers who work in this industry, it is common knowledge that content creation is extremely limited beyond the HDCAM upper end of 1440 pixels. And, any attempt to deliver resolution beyond that results in passing nothing but image noise as opposed to an improvement in image quality. Therefore, a delivery service has a choice to limit the resolution in this range occupied by typical noise or pass it and waste bandwidth on a portion of the content that really does not contribute to the program quality. If the viewer at the receiving end has his monitor limited in resolving power then the whole exercise in passing an unrestricted upper limit becomes an exercise that has only one result, wasted bandwidth.
My position is that if a happy balance can be achieved where the MSO passes HDCAM resolution he will satisfy the needs of most if not all consumers at this time. As more and more consumers have these 1080p x 1920 monitors then not only will the MSO need to up the specs but so will the content creators need to acquire with higher resolution source equipment and that content be created and distributed in native resolution as well.
Now, I have not heard what downresing is done to. When asked, those doing it get quite evasive. If the PQ is being downresed to the point where it looks quite fuzzy on a 720P x 1280 monitor then I submit that the MSO may be downresing to SD resolution which I agree is reprehensible when advertising HDTV channels. This, IMO, goes far beyond HD lite, but rather HD FRAUD.
I think, in order to continue a reasonable dialog in this subject, we consumers need to define exactly what it is we are complaining about. HD-Lite needs a range of acceptance based on industry standards. Since the ATSC and FCC have assigned the vertical resolution of 720P 60 and 1080i 30 as the standard and allow a range of H pixels to qualify as HDTV it would be wrong to define HD-Lite as anything less than 1920. 1080i 30 at 1440 is indeed considered by industry standards as HDTV resolution. Most HDTV viewed is just that, not 1920 anyway. Few people have ever seen full 1920 on a 1920 monitor sourced from D5 shot on a studio HD camera. I have only seen it at NAB. Now I believe the CES demos look to be full 1920 on the 1080P monitor demos.
I suggest we define HD-lite as any resolution above standard definition that has the required 720P or 1080i but offers less than 1200 pixels in the horizontal from either vertical standard.