Merry Christmas All... I have BI with about 3 outside Hikvision 4MP cameras. I was hoping to have everything constantly recording, but am confused on what settings to use Blue Iris DVR or MPEG 4 H.264 and also a calculator for the size of the files. If I can't recording constantly, is there a way to set up a specific motion area of the camera, for example, the left quarter of the screen, since some of the shot is of the street. Any info is appreciated.