[quote name='deekayex']The Wii uses 480p widescreen, which is 854 * 480 pixels. Normal 480p is 640 * 480. The Vdigi specifications say that it accepts 480p, 720p, and 1080p input signals, so will it accept (and correctly output) Wii's 480p widescreen signal?[/QUOTE]
1. There is only one 480p. So whether that 480p is 854x480 or 640x480 when output, that's all the exists. And that's assuming TVs even output in a discrete resolution, the signal is analog and TV resolution is measured in lines and not pixels so it may not work the same as a PC.
2. The lowest res the vdigi accepts is 480p, so I think it will cope with the Wii's 480p just fine.
3. To go from widescreen to fullscreen, console games and dvd players don't change resolution like PC games do. Notice PC monitors change scan rates when you change resolution, a TV does not because it only supports 1 scan rate, and scales other resolutions accordingly. Even still, all consoles use whatever formats a dvd player supports, there was no console specific spec written.
4. There's been no word on what the internal resolution of the Wii is when doing widescreen. It could be 854x480, or it could be 640x480 with rectangular pixels. If the Wii still has only the 3MB embedded ram on its GPU that the Cube had, it doesn't have enough memory to fit an 854x480 frame with 24 bit color.
5. 480p is defined as a resolution of 720x480 with nonsquare pixels (for widescreen) and 640x480 for square pixels. The 854x480 res is just the internal res of the device required to do widescreen with square pixels, the output res is still the same, though I'm not sure what it is exactly, but it's somewhere inbetween 640x480 and 720x480.