Confusion about 1080p LCD HDTV's....

[Proteus]

Just watch and read these (I'm seeing way too much misinformation in this thread):

http://www.youtube.com/watch?v=Z-JXfyvlPh0

http://boardsus.playstation.com/play...cending&page=1

[AV_Integrated]

Originally Posted by Proteus

Just watch and read these (I'm seeing way too much misinformation in this thread):

http://www.youtube.com/watch?v=Z-JXfyvlPh0

http://boardsus.playstation.com/play...cending&page=1

Both of those explanations are very good, but neither of them touches that much on the originating source material, which is critical to HD optical discs and this discussion.

Because film originates at 24fps, and many TV shows are actually shot a 30fps on film, it means that 1080i actually contains progressive frame information that is spread across two fields, and proper deinterlacing can perfectly restore the full 1080p original material. Further, if the display is up to the task, it can properly show it at the proper frame rate, or multiple thereof. So, a 30fps show can be presented at 30hz, 60hz, 90hz, 120hz, etc. or a 24fps movie can be presented at 24hz, 48hz, 72hz, 96hz, 120hz, etc.

With that type of material and proper processing, a 1080i output is always going to deliver a better image.

True 1080i source material is rarely better than true 720p source material when it comes to things like action sports. Football, hocket, tennis, etc. When things start moving, interlace artifacting kicks in, which is why many networks which focus on sports decided on 720p material.

Yet, when action is low and there are few camera pans or the original source is a lower frame rate than 60hz, then those stations decided upon 1080i broadcasts.

Yet, the 720p, 1080i debate is moot when it comes to 24fps sources and a display which properly deinterlaces. In those cases, 1080i is always better, and if all processing is done properly, 1080i will look identical to 1080p.