Axis 223M User Manual

Also see for AXIS 223M: Specifications Product guide Installation guide Hoja de datos User manual

AXIS 223M - Video Streams11Video StreamsThe AXIS 223M provides several different image and video stream formats. The type to use depends on yourrequirements and on the properties of your network.The Live View page in the AXIS 223M provides access to MPEG-4 and Motion JPEG video streams, as well assingle JPEG images. Other applications and clients can also access these video streams/images directly, withoutgoing via the Live View page.How to stream MPEG-4This video compression standard makes good use of bandwidth, and can provide DVD-quality video streams atless than 1 Mbit/s. Note that the image settings of the MPEG-4 stream are the same for all clients. The image sizein MPEG-4 is limited to 640x480, this will be set when switching from Motion JPEG.Deciding on the combination of protocols and methods to use depends on your viewing requirements, and onthe properties of your network. The available options in AMC are:Unicast RTP This unicast method (RTP over UDP) should be yourfirst consideration for live video, especially when it isimportant to always have an up-to-date video stream,even if some images are dropped. Unicasting is used for video-on-demandbroadcasting, so that there is no video traf-fic on the network until a client connectsand requests the stream.Note: There is a maximum of 20 simulta-neous viewers.RTP over RTSP This unicast method (RTP tunneled over RTSP) is use-ful as it is relatively simple to configure firewalls toallow RTSP traffic.RTP over RTSP over HTTP This unicast method can be used to traverse firewalls.Firewalls are commonly configured to allow the HTTPprotocol, thus allowing RTP to be tunneled.Multicast RTP This method (RTP over TCP) should be your first con-sideration for live video, especially when it is impor-tant to always have an up-to-date video stream, evenif some images are dropped.Multicasting provides the most efficientusage of bandwidth, especially when thereare large numbers of clients viewing simul-taneously. Note however, that a multicastbroadcast cannot pass a network routerunless the router is configured to allow this.It is thus not possible to multicast over e.g.the Internet.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 any specific requirements.Important!MPEG-4 is licensed technology. The AXIS 223M includes one viewing client license. Installing additionalunlicensed copies of the viewing client is prohibited. To purchase additional licenses, contact your Axisreseller.