| osamanobama said: i just realized i still dont understand the benefit of faster bitrate and such. does bluray have a higher theroretical bitrate, what does that mean for its visual quality. which brings me to my next point. cnet.com had a recent article about different 3D tech, and they said that bluray is the only way right now to get full 1080p/24 3D (i know no ps3 game can do this). as it has a much higher bandwidth than broadcast TV, and i assume DVD. So it can do framepacking 3d (2 frames stacked on top of each other, each at 1080p/24). while broadcast Tv does either side by side or top and bottom 3D, which severly cuts down the resolution. So i was wondering, with the recent rumors of xbox having an update to be able to finaly do true stereo-scopic 3D. how will it be able to do framepacking 3D, like the PS3 can (though obviously its not 1080p) due not only to bluray, but also due to it higher bandwidth HDMI 1.3b port. xbox uses DVD and HDMI 1.2. so can DVD do framepacking, does HDMI 1.2 even allow for that. if DVD can do it, why have there been framepacking, stereoscopic 3d for DvD(as far as i know). |
First of all... Framepacking 720p only needs HDMI 1.2 bandwith wise. Total resolution of 720p framepacking is 1280x1440 which is well within the HDMI 1.2 spec. What HDMI 1.2 "can't" do is the extra handshake which is needed for 3D TVs to understand which 3D format the console is sending. This is why on xbox version of Black ops or NBA2K11, the user needs to manually choose the 3D format and it isn't automatic like the PS3. If MS do implement framepacking 3D on 360, they must have pulled some software trick out of their hat...
Now to the main point...
When it comes to 360 and PS3 3D implementation so far, side by side or framepacking have very little visible difference. Both methods take 2 images which are usually 1/2 of 720p and upscale them to 720p per eye. The upscaling is very noticable to someone who plays games on the PC in true 720p and especially full 1080p @ 60 hz(something HDMI 1.4 cand to cause of lack of bandwith...only dual link DVI)
With that said. there is absolutely no reason why anyone would want "framepacking" or HDMI 1.4 support on the 360. Framepacking is slightly inferior to side to side/over under...and really badly inferior to checkerboard 3D when it comes ot gaming.
The 2 major issues with framepacking is image scaling and locking out non HDMI 1.4 displays. I can play 360 games using a PC on my 3D monitor and projector...can't do the same with PS3 without a 400 dollar "official" adapter.
Here is a thread on nvidia boards which people can read over to see why framepacking is not recommended. People who bought Samsung 3D TVs have the checkerboard 3D mode available(other TVs dont for some reason) and all pretty much agree that it beats 720p framepacking.
http://forums.nvidia.com/index.php?showtopic=200925
And finally...DVD's can't do HDMI 1.4 framepacking when it comes to holywood movies. They lack the HDCP protection features which bluray has. However technically they can easly all other forms of 3D and may be able to do framepacking for gaming, since consoles have their own security measures. Space does become an issue with a DVD though...
