Axis 209MFD User Manual

Also see for AXIS 209MFD: Specifications Product guide Installation guide Datasheet

Axis 209MFD User Manual Manual pdf 11 page image

11AXIS 209MFD/MFD-R/MFD-R M12Video StreamsThe AXIS 209MFD/MFD-R/MFD-R M12 provides several different image and video stream formats. Thetype you want to use would depend on your requirements and on the properties of your network.The Live View page provides access to MPEG-4 and Motion JPEG video streams, as well as to single JPEGimages. Other applications and clients can also access these video streams/images directly, without goingvia the Live View page.How to stream MPEG-4This video compression standard makes good use of bandwidth, and can provide DVD-quality video streamsat less than 1 Mbit/s. Note that the image settings of the MPEG-4 stream are the same for all clients.Deciding on the combination of protocols and methods to use depends on your viewing requirements, andon the properties of your network. The options available in AMC (see page 12) are:AMC will negotiate with the camera to determine exactly which transport protocol to use in the order listedabove. This order can be changed and the options disabled, to suit specific requirements.Important!MPEG-4 is licensed technology. The AXIS 209MFD/MFD-R/MFD-R M12 includes one viewing clientlicense. Installing additional unlicensed copies of the viewing client is prohibited. To purchase addi-tional licenses, contact your Axis reseller.Unicast RTP This unicast method (RTP over UDP)should be your first consideration for liveunicast video, especially when it isimportant to always have an up-to-datevideo stream, even if some images aredropped. Unicasting is used for video-on-demand broadcasting, so that there is no videotraffic on the network until a client connects and requests the stream.Note that there is a maximum of 10 simultaneous unicast connections.RTP over RTSP This unicast method (RTP tunneled overRTSP) is useful as it is relatively simple toconfigure firewalls to allow RTSP traffic.RTP over RTSP over HTTP This unicast method can be used totraverse firewalls. Firewalls are com-monly configured to allow the HTTP pro-tocol, thus allowing RTP to be tunneled.Multicast RTP This method (RTP over UDP) should be used for live multicast video. The video stream is always up-to-date, even if someimages are dropped.Multicasting provides the most efficient usage of bandwidth when there are large numbers of clients viewing simultaneously.A multicast broadcast cannot however, pass a network router unless the router is configured to allow this. It is thus not possi-ble to multicast over the Internet, for example.Note also that all multicast viewers count as one unicast viewer in the maximum total of 10 simultaneous connections.