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AXIS M3014 - 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 also access these video streams/images 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 the combination of protocols and methods to use depends on your viewing requir
ements, and on the properties of
your network. The available options in AMC are:
AMC negotiates with the camera to determi
ne the transport protocol to use in the order listed above. This order can be
changed and the options disabled, to suit specific requirements.
Important!
H.2
64 is licensed technology. The network camera includes one viewing client license for each technology. Installing
additional unlicensed copies of the viewing client 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 (AMC) in Microsoft Internet Explorer in Windows.
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 images are dropped.
Unicasting is used for video streaming, so that there is
no video traffic on the network until a client connects
and requests the stream.
Note: There are a maximum of 20 s
imultaneous 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 broadcast
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 viewer
s count as one unicast viewer.
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