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Old 03-30-2008   #9
Super Member
Join Date: Feb 2008
Location: U.S.
Posts: 379
Default Re: Blu-ray Resolution

Don't worry I won't take any corrections you make personally. If I post something erroneous I would like to know about it. But what exactly do you disagree with?
I agree that if you have your BD player set to 1080p/24 output and if your display is capable of displaying 1080p/24 at a refresh rate of an even multiple of 24 (actually 23.97) such as 24, 48, 72, or 120 then you can have that "true cinematic 24fps experience" (like some Pioneer plasmas' 72 Hz or some Sony and JVC projectors' 96 Hz).

Although there are now many 120 Hz LCD displays coming out. None are capable of 5:5 pull down (24x5) which is truely unfortunate, since 120 is the magic number evenly divisible by both 24 and 60. (If I am wrong about this, someone please post.) The overwhelming majority of displays currently in use are not capable of this. In fact, even some of the most recent displays which market themselves as "1080p/24 compatible" are merely capable of receiving 1080p/24 input which is then deinterlaced to display at 60Hz.

Since most current HDTVs cannot display 1080p/24, when you connect your BD player to an HDTV that does not have 1080p/24 input and display capability but only has 1080p/60/30 or 1080i input capability, the player automatically sends its 1080p/24 signal from the disc to its own video processor which then outputs a 1080i/60 signal. This leaves the HDTV to do the final step of deinterlacing and displaying the incoming 1080i signal in 1080p, which is why the article I quoted stated (facetiously) that there is no difference between 1080i and 1080p.
(As the article I quoted mentioned, the Samsung BD-P1000 does something a bit more complicated. This Blu-ray player reads the 1080p/24 signal off the disc, then it actually reinterlaces the signal to 1080i, and then deinterlaces its own internally made 1080i signal in order to create a 1080p/60 signal for output to a 1080p input capable television. However, if it detects that the HDTV cannot input a 1080p signal, the Samsung BD-P1000 just takes its own internally created 1080i signal and passes that signal through to the HDTV, letting the HDTV do the final deinterlacing step.)
Again, if I stated anything incorrect, Andrew, Jerry, or anyone else please chime in, and explain. I will gladly stand corrected.
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