Axxon PSIM supports transmitting the digital video signal from the server to the remote workstations for remote video surveillance, archiving, routing via the videogate, and transmitting via the web server by HTTP protocol (Internet) to a mobile device with an iOS or Android operating system. Both real-time and archive video signals can be transmitted to the remote workstations.

Real-time video signals are transmitted in response to requests from remote workstations for display, archiving, routing using a videogate or transmission via a web server over HTTP (Internet) to a mobile device running iOS or Android operating systems. By default, video signals are transmitted with the same characteristics (resolution, color, frame rate, and others) as those used for digitization and processing by video capture cards or IP devices.

Before transmitting to remote workstations, Axxon PSIM compresses the video signal. By default, the compression level of the video signal transmitted to a workstation connected to the server via a local TCP/IP network is identical to the compression level of the video signal being archived. The procedure for adjusting the compression level of the video signal in this case is described in Configuring video compression.

If your network connection is unstable and/or the data transfer rate is low, real-time video can lag. To eliminate or minimize this effect, we recommend using the following registry keys:

• AcsStdLimit is a registry key used to set the upper limit of the frame queue for an MJPEG video stream. It can have a value from 1 to 30.
• AcsMpegLimit is a registry key used to set the upper limit of the frame queue for an H.264/MPEG4 video stream. It can have a value from 1 to 30.

If the queue of frames transmitted to the remote workstation grows to the value specified in the registry key, the decimation is enabled.

You can reduce the frame rate and increase the level of compression of video signals when transmitting them to remote workstations for display, archiving, and routing using a videogate.

You can reduce the frame rate and increase the level of compression of video signals when transmitting them to remote workstations for display individually for each camera on the settings panel of the Monitor object.

You can reduce the frame rate and increase the level of compression of video signals when transmitting them to remote workstations for archiving individually for each camera on the settings panel of the Backup archive object.

You can reduce the frame rate and increase the level of compression of video signals for transmission to the videogate individually for each camera on the settings panel of the Videogate object.

The compression level of the video transmitted to a remote workstation or iOS/Android mobile client connected to the server via HTTP is set in the settings panel of the Web server object corresponding to the Web server module. The procedure for configuring the video compression level in these cases is described in the section on configuring the Web server module and in the documentation for the iOS/Android mobile client.