Basic question here, but why do cameras have multiple streams? First one is HD, second one is usually a lower resolution. If I'm using Blue Iris, how do I ensure I'm getting the HD stream and not the low one? (I used ONVIF discovery) Not sure if this is related but assuming that BI is already streaming on the HD stream, I am also able to view the camera stream with my web browser (on camera's IP, not BI) at the same time. So it seems the same stream can handle multiple users.... so why would anyone ever use the low quality stream?