alert systems
4. In some implementations, the transmission of video data is irrespective of the content of the video data, and the video data is uploaded from the video source 501 to the server system 164 for storage irrespective of whether any motion event has been captured in the video data. In some implementations, the video data may be stored at a local storage device of the video source 501 by default, and only video portions corresponding to motion event candidates detected in the video stream are uploaded to the server system 164 e. g. , in real time. In some implementations, the video source 501 dynamically determines at what display resolution the video stream is to be uploaded to the server system 164.