Maighstir: Certainly possible, but not all too easy.
Anything like that would involve adding quite a bit of latency, which is not really desired, especially in fast-paced games requiring decent reflexes.
For a four-player game, I can see it being possible, but a two-player scenario with each player having half the screen could never give each player a "full screen" even if you could theoretically split it into two separate images.
The way I see it:
Image signal is sent to a computer through a capture device, an application reads the image, splits the image into two or four, as desired, then sends each image to its own screen.
For a two-player game the final images would be centred on the screen, with black bars above/below or to the left/right (depending on how the image is split), and for four-player, the resolution would be halved in both height and width as the quarter-image is stretched to fill each screen.
I don't know of an application that does that, but it shouldn't be all too difficult to write, given that there are loads of readily available libraries for handling video data.
i hoped for some small device instead of a pc that clones the analog signal up to 4 times and the edites, stretches and scales every signal before sending them on to the tvs
