Which great god help me, I will not line, your checked two weeks haven't completely understand, I now have SONY 4140 + 5148 + 633 analog cameras, I pick up my video acquisition card even put it on the computer to the video of 720 x576 resolution, I checked the parameters of the 633, its effective pixels is 510 x582, then how it is and 720 x576 against, I also check the analog camera not speak pixel line number, the number of lines is the resolution of the vertical direction, also in 582 and 576, for the 720 and 510 and how to, and the 720 x576 is the realization of video acquisition card or the resolution of the output signal is 720 x576 analog camera