Axis M3011 User Manual

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12AXIS M3011 - Video StreamsVideo StreamsThe network camera provides several image and video stream formats. Your requirements and the properties of your networkwill determine the type you use.The Live View page in the network camera provides access to H.264, Motion JPEG, and MPEG-4 video streams, and to the listof available stream profiles. Other applications and clients can also access these video streams/images directly, without goingvia the Live View page.How to stream MPEG-4/H.264This video compression standard makes good use of bandwidth, and can provide high quality video streams at less than 1Mbit/s.Deciding the combination of protocols and methods to use depends on your viewing requirements, and on the properties ofyour network. The available options in AMC are:AMC negotiates with the camera to determine the transport protocol to use in the order listed above. This order can bechanged and the options disabled, to suit specific requirements.Important!H.264 and MPEG-4 are licensed technologies. The network camera includes one viewing client license for each tech-nology. Installing additional unlicensed copies of the viewing client is prohibited. To purchase additional licenses, con-tact your Axis reseller.Unicast RTP This unicast method (RTP over UDP) shouldbe your first consideration for live unicastvideo, especially when it is important toalways have an up-to-date video stream,even if some images are dropped. Unicasting is used for video streaming, so that there isno video traffic on the network until a client connectsand requests the stream.Note that there are a maximum of 20 simultaneousunicast 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 overHTTPThis unicast method can be used to traversefirewalls. Firewalls are commonly configuredto allow the HTTP protocol, thus allowingRTP to be tunneled.Multicast RTP This method (RTP over UDP) should be used for live multicast video. The video stream is alwaysup-to-date, even if some images are dropped.Multicasting provides the most efficient usage of bandwidth when there are large numbers of cli-ents viewing simultaneously. A multicast broadcast cannot however, pass a network router unlessthe router is configured to allow this. It is not possible to multicast over the Internet, for example.Note also that all multicast viewers count as one unicast viewer in the maximum total of 20simultaneous connections.