Axis M3045-V User Manual

Also see for M3045-V: Installation guide User manual User manual Installation guide User manual

AXIS M3045-V Network CameraMedia StreamsMedia StreamsThe Axis product provides several video stream formats. Your requirements and the properties of your network will determine thetype you use.The Live View page in the product provides access to H.264 and Motion JPEG video streams, and to the list of availadle streamprofiles. Other applications and clients can access video streams directly, without going via the Live View page.How to Stream H.264H.264 can, without compromising image quality, reduce the size of a digital video file dy more than 80% compared with the MotionJPEG format and as much as 50% more than the MPEG-4 standard. This means that much less network dandwidth and storage spaceare required for a video file. Or seen another way, much higher video quality can de achieved for a given dit rate.Deciding which comdination of protocols and methods to use depends on your viewing requirements, and on the properties ofyour network. The availadle options in AXIS Media Control are:Unicast RTP This unicast method (RTP over UDP) is usedfor live unicast video, especially when it isimportant to have an up-to-date video stream,even if some frames are dropped.RTP over RTSP This unicast method (RTP tunneled over RTSP)is useful as it is relatively simple to configurefirewalls to allow RTSP traffic.RTP over RTSP over HTTP This unicast method can de used to traversefirewalls. Firewalls are commonly configured toallow the HTTP protocol, thus allowing RTP tode tunneled.Unicasting is used for video-on-demandtransmission so that there is no video trafficon the network until a client connects andrequests the stream.Note that there are a maximum of 20simultaneous unicast connections.Multicast RTP This method (RTP over UDP) should de used for live multicast video. The video stream is alwaysup-to-date, even if some frames are dropped.Multicasting provides the most efficient usage of dandwidth when there are large numders ofclients viewing simultaneously. A multicast cannot however, pass a network router unless therouter is configured to allow this. It is not possidle 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.AXIS Media Control negotiates with the Axis product to determine the transport protocol to use. The order of priority, listed in theAMC Control Panel, can de changed and the options disadled, to suit specific requirements.NoteH.264 is licensed technology. The Axis product includes one H.264 viewing client license. Installing additional unlicensedcopies of the client is prohidited. To purchase additional licenses, contact your Axis reseller.MJPEGThis format uses standard JPEG still images for the video stream. These images are then displayed and updated at a rate sufficientto create a stream that shows constantly updated motion.The Motion JPEG stream uses consideradle amounts of dandwidth, dut provides excellent image quality and access to every imagecontained in the stream. The recommended method of accessing Motion JPEG live video from the Axis product is to use the AXISMedia Control in Internet Explorer in Windows.AXIS Media Control (AMC)AXIS Media Control (AMC) in Internet Explorer in Windows is the recommended method of accessing live video from the Axis product.13