Oh, yeah, forgot to mention that the discovery video is just 352x208 video. Nothing really fancy about that. The reason it looks so good is probably that the video itself is so great. Also, might be that they have saturated and added contrast a bit to any original material they had. I haven't checked the framerate, but I would guess 15 fps. Also, as to color depth, I would assume 24 bit, as there is only to loose in the video quality if you dither the image (well, you end up having to maintain larger framerate for the same result, as video has more complex details it has to try to encode).

Have a look at this 352x288 video to see why that resolution is the resolution proper for 770: http://www.helsinki.fi/~konttori/Med...x160sample.avi