Quote:
Originally Posted by arista
Good
1080P is the best
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Is 1080p better than 720?
Certainly 1080p is better (if you mean from a video quality perspective it's higher resolution) than 720p, but perhaps they are talking about 720p vs 1080i.
For sports or fast action 720p is usually better because with an interlaced signal (1080i) the two halves of the image that make up each frame can be slightly out of sync, and while the image is technically slightly higher resolution (1080 vs 720 lines) it's less clear. Furthermore interlaced video is prone to a type of annoying video artifact called twittering ... see link. Finally many displays don't do de-interlacing very well.
Keep in mind that image quality isn't just a matter of resolution. Contrast, color saturation and color accuracy are actually more important ... but in theory apply equally to a 720p or 1080p image.
So ... almost always 720p video is "better" than 1080i.
While not directly relevant, consider that the degree of video compression used in the signal (particularly true for broadcast TV ... and a major reason why some HDTV broadcasts look better than others ... but also potentially an effect on DVS or Blu-rays) can mean that a compressed 1080p image would look worse than a less compressed 720p image. That said, 1080p isn't widely available for HDTV and Blu-ray is almost always 1080p and has to be down sampled to output at 720p.
source:
http://en.wikipedia.org/wiki/Interlaced_video