| raygun said: I'm confused, why would they title it a "Primary Video Format timing", with "1920x1080p @ 59.94/60Hz (Top-and-Bottom)" listed, and also have "1280x720p @ 59.94/60Hz (Frame Packing, Side-by-Side(Half), Top-and-Bottom)" listed. If the 1080 is actually 720, then is the 720 top and bottom actually something else also? The definition of the Top and Bottom format: "Top-and-Bottom is one of the HDMI 3D video format structures indicated by the 3D_Structure field and is composed of two stereoscopic pictures: Left and Right, which are subsampled to half resolution on the vertical axis, and defined as shown in Figure 8-6." Which to me sounds like they are half vertical rez images, 1920x 540, not 1280 x 720
Look at the Figure 8-6 3D structure (Top-and-Bottom) EXPLAIN!
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"Which to me sounds like they are half vertical rez images, 1920x 540, not 1280 x 720"
You are essentially right.
You are getting 2 images, 1920x540 resolution each, but the TV stretches the image back to 16:9 ratio. Which is around 720p if you count the pixels you are getting.
If you have a PS3, download the Invincible tiger arcade game demo. PLay around in 3D settings and you will see what top and bottom looks like. Its exactly the same method as side to side.
Here is an image of 3D methods before "frame packing" was introduced. Checkerboard, interlaced vertically, interlaced horizontally, top and bottom and side to side.
