Quote:
Originally Posted by SyncMaster753 
also, what is your TV model? it may support 1080p signals but may be only 1080i in it's maximum resolution
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That makes no sense because 1080i (the resolution) is not 16:9. All 1080i TVs have a maximum resolution of either 1920x1080, 1366x768 or 1280x720.
Quote:
Originally Posted by Mr Bear 
It is how the image is projected. The interlaced res is unstable. It shows you odd lines of an image, and then the even lines of the image. Where as progressive res shows you the full picture, thus being more stable/better quality. even tho 1080i is a higher res, the image is usually distorted So.. 720p vs 1080i, 720p is more stable and not as distorted if at all.
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720p video is delivered at 59.94 frames per second, and so is 1080i. If you view a progressive Blu-ray as 1080i, it'll simply be "declared" interlaced, but it won't actually be interlaced. The video will be separated into two fields, but they'll be separate.
It's not unstable, that's a very, very wrong thing to say. Interlacing on its own does not say which field comes first - that's something which is declared in the video. (TFF vs BFF)
The only difference between interlacing and progressive is that interlacing will show all odd or even lines first (0,2,4,6), and then what's left (1,3,5,7), while progressive displays them in order (0,1,2,3,4)...
1080i is not distorted. It's true it's not 16:9, but it's simply resized. Most HDTV broadcasts are 1080i and are resized in the same way. 16:9, 1.85:1 and 2.35:1 DVDs are also not stored as their respective aspect ratios, and are resized on playback to achieve the correct aspect ratio. There's no distortion.
Video has got to be the area with most misinformation and the largest amount of people who think they know what they're talking about, but actually don't.
In short: 1080i is in most cases only transferred as interlaced, but is actually progressive. What that means is it has less horizontal resolution than 1080p (1440 vs 1920), that's all. It's better than 720p. It's not distorted or unstable at all.