One BD only displaying in 720p instead of 1080p...

[supersickie]

I'm not sure this is the right forum for a post like this, but I didn't see another that was obvious.

I have a PS3 that's connected to a 1080p Philips LCD display. The BD in question, NIN Live: Beside You in Time, is only displaying in 720p as opposed to 1080p. I've tested five other titles all of which display in 1080p as well as Gran Turismo 5: Prologue (PS3 game for the uniformed) and it is displaying in 1080p (one of the few titles that is legitimately capable of doing so) as well.

I just watched the BD is question yesterday and everything looked great. I only bring this up because I was able to notice something amiss by just glancing at the display this evening; I could readily tell something wasn't quite right as I've just become accustomed to viewing BD in 1080p. I guess the obvious thing is I just have a bad BD, but it's a really hard pill for me to swallow seeing as it worked great just yesterday.

So, I'm just curious to know if someone has a similar experience or can think of something I may have missed. For the record, I've checked, disconnected, and reconnected all HDMI and power connections from both the display and PS3. I've even gone so far as to do a video/audio reset on the PS3 in hopes that would fix the issue. Alas, nothing has done the trick.

Thanks in advance.