Techno Help required

[Bullseye]

By no means am I an expert on video and audio but i do know what looks and sounds well. However i just want some clarification on the following. On another forum someone asked the difference between 1080p and 1080i. Now i know p stands for progressive scan so that the image refreshes more quickly. Could someone comment on the following statement.

Basically the only scenario where there is a difference between 1080i and 1080p signal is if you're running a PC game through your set as a PC can produce a 1080p signal at 60 frames a second.

First of all, all TVs are incapable of displaying the 1080i or 1080p signal that originates from TV or movies. The reason is that television and films are shot at 24 frames a second and your TV refreshes its screen 60 times a second. So either your player, or the TV, uses a process called 3:2 pulldown to up the frame-rate. The first frame is doubled, the second frame tripled, the third one doubled, the fourth one tripled, etc... During that process, your TV or player will de-interlace a 1080i signal (meaning there's no difference at all between it and a 1080p signal).

Some 1080p Blu-Ray players actually interlace the signal internally, then de-interlace the signal (internally still). So even if you have a 1080p Blu-Ray player it could still have the step of de-interlacing (and no matter what the 3:2 pulldown is required in either the player or the TV).

So as of now, a 1080p set that only accepts a 1080i signal is absolutely no different for films and Television (and most all video games). The only way it would become an issue is if they start filming movies and TV shows at 60 frames a second, which won't happen for a decade, if ever. A 1080p film at 60 frames per second would take around 3 Blu-Ray discs and require much more bandwidth than Blu-Ray has.