Axis Communications 207 user manual Video Streams, How to stream MPEG-4

AXIS 207 - Video Streams 13

Video Streams

The AXIS 207 provides several different image and video stream formats. The type to use depends on your requirements and on the properties of your network.

The Live View page in the AXIS 207 provides access to MPEG-4 and Motion JPEG video streams, as well as to single JPEG images. Other applications and clients can also access these video streams/images directly, without going via the Live View page.

How to stream MPEG-4

This video compression standard makes good use of bandwidth, and can provide high-quality video streams at 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, and on the properties of your network. The available options in AMC are:

Unicast RTP	This unicast method (RTP over UDP) should be
	your first consideration for live unicast video,
	especially when it is important to always have
	an up-to-date video stream, even if some	Unicasting is used for video-on-demand broad-
	images are dropped.	casting, so that there is no video traffic on the
		network until a client connects and requests the
RTP over RTSP	This unicast method (RTP tunneled over RTSP) is
		stream.
	useful as it is relatively simple to configure fire-
	walls to allow RTSP traffic.	Note: There is a maximum of 10 simultaneous
RTP over RTSP over	This unicast method can be used to traverse fire-	unicast connections.
HTTP	walls. Firewalls are commonly configured to
	allow the HTTP protocol, thus allowing RTP to be
	tunneled.
Multicast RTP	This method (RTP over TCP) should be used for live multicast video. The video stream is always
	up-to-date, even if some images 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 possible to multicast over e.g. the Internet.
	Note also that all multicast viewers count as one unicast viewer in the maximum total of 10 simulta-
	neous connnections.

When the Reconnect Strategy is not enabled, AMC will negotiate with the camera to determine exactly which transport protocol to use, in the order listed above. This order can be changed and the options disabled, to suit any specific requirements. See also the AMC User’s manual, available from www.axis.com/techsup

Important!

MPEG-4 is licensed technology. The AXIS 207 includes one viewing client license. Installing additional unlicensed copies of the viewing client is prohibited. To pur- chase additional licenses, contact your Axis reseller.