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AXIS M11 Series - Video Streams
Video Streams
The network camera provides several image and video stream formats. Your requirements and the properties of your network
will determine the type you use.
The Live View page in the network camera provides access to H.264 and Motion JPEG video streams, and to the list of
available stream profiles. Other applications and clients can access the video streams directly, without going via the Live View
page.
How to stream H.264
This video compression standard makes good use of bandwidth, and can provide high quality video streams at less than 1
Mbit/s.
Deciding which combination of protocols and methods to use depends on your viewing requirements, and on the properties of
your network. The available options in AXIS Media Control are:
AXIS Media Control negotiates with the camera to determine the transport protocol to use. The order of priority, listed in the
AMC Control Panel, can be changed and the options disabled, to suit specific requirements.
Important!
H.264 is licensed technology. The network camera includes one H.264 viewing client license. Installing additional
unlicensed copies of the clients is prohibited. To purchase additional licenses, contact your Axis reseller.
Motion JPEG
This format uses standard JPEG still images for the video stream. These images are then displayed and updated at a rate
sufficient to create a stream that shows constantly updated motion.
The Motion JPEG stream uses considerable amounts of bandwidth, but provides excellent image quality and access to every
image contained in the stream. The recommended method of accessing Motion JPEG live video from the network camera is to
use the AXIS Media Control in Internet Explorer in Windows.
Unicast RTP
This unicast method (RTP over UDP) is used
for live unicast video, especially when it is
important to always have an up-to-date
video stream, even if some images are
dropped.
Unicasting is used for video-on-demand transmission,
so that there is no video traffic on the network until a
client connects and requests the stream.
Note that there are a maximum of 20 simultaneous
unicast connections.
RTP over RTSP
This unicast method (RTP tunneled over
RTSP) is useful as it is relatively simple to
configure firewalls to allow RTSP traffic.
RTP over RTSP over
HTTP
This unicast method can be used to traverse
firewalls. Firewalls are commonly configured
to allow the HTTP protocol, 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 some images are dropped.
Multicasting provides the most efficient usage of bandwidth when there are large numbers of cli-
ents viewing simultaneously. A multicast cannot however, pass a network router unless the
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 20
simultaneous connections.
Summary of Contents for M11 Network Camera Series
Page 50: ...AXIS M11 Series Index 50 ...
