Why can’t Public Safety use delayed video or image grabs to alleviate the capacity concerns?
Delayed video is video that is transmitted at a lower rate (bits per second) than the rate at which it was captured (seemingly because of a limitation in the network’s transmission capacity or in an attempt to take advantage of non-real-time compression techniques). Transmitting video in this way causes two problems. First, the video showing on the other end will not be real-time. Second, since the outgoing bits move more slowly than the incoming bits, the camera’s buffer will fill and it will have to stop recording until it catches up. Video transmission that is not real-time and has large holes endangers the response by influencing decisions based on mis-information regarding the current state of the situation. Image grabs (i.e. transmitted pictures) present the same problem, but are even more limiting. For example, assessing whether an incident is escalating (decision: send more resources) or calming down (decision: do not send any more resources or switch to clean-up resources) wou
