Stream profiles

Stream profiles are selected based upon viewing quality requirements. Detect VMS provides four stream profiles. Based upon deployment strategies and the specific OEM cameras, an agreed upon definition should be established for each. For instance, if Axis cameras are used, then a standard definition for the Quality Stream should be established; and the same for Balanced, Bandwidth, and Mobile. The four profiles are:

Quality   The highest desired viewing image possible. This stream will most likely also be the stream that is recorded.

Balanced   This type of stream may be used over a local area network, however portion of the network has some limitations. It could be the WAN stream is the network infrastructure has wireless links with some limitations.

Bandwidth   This type of stream may be used for remote users, and possibly where multicast is not a requirement. Typically, this stream would be used for troubleshooting or random remote viewing. It is also possible that the Mobile stream could be used for random remote viewing.

Mobile   Generally, this will be a lower quality, lower frame rate stream, possibly even a JPEG stream depending upon viewing requirements.

These definitions provide some basic guidelines for stream profiles, but it must be noted that not all deployments are the same, so it is highly recommended that a strategy be outlined to maintain consistency

Video Streams

Video streams refer to the type of IP protocol used to connect between the viewing station and camera. Three stream types are supported:

Multicast – (Mu)   Multicast is the delivery of video to a group of destination computers simultaneously in a single transmission from the source. Copies are automatically created in other network elements, such as switches, but only when the topology of the network requires.

Tunnel or Unicast – (Tu)   Unicast is the delivery of video to a single computer destination in a single transmission from the source. Unicast does not require the destination to acknowledge receipt of video.

Transmission Control Protocol – (Tc)   TCP is the delivery of video to a single computer destination in a single transmission from the source. TCP requires the destination to acknowledge receipt of video. .

Assigning stream profiles

Stream profiles behave the same as other permissions. In the System Settings window, select a group or user. In the Stream Profile permission field, left click on a site or camera to toggle through the stream quality options.

See Permissions for more information.