Axis Communications Security Camera 209FD/FD-R User Manual

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10
AXIS 209FD/FD-R
Video Streams
The AXIS 209FD/FD-R 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 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 DVD-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 options available in AMC (see page 11) are:
AMC will negotiate with the camera to determine ex
actly which transport protocol to use in the order listed
above. This order can be changed and the options disabled, to suit any specific requirements.
Important!
MPEG-4 is licensed technology. The AXIS 209FD/FD-R includes one viewing
client license. Installing
additional unlicensed copies of the viewing client is prohibited. To purchase additional licenses, con-
tact your Axis reseller.
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-on-demand bro
adcasting, so that there is no video
traffic on the network until a client connects and requests the stream.
Note that there is a maximum of 10
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 com-
monly configured to allow the HTTP pro-
tocol, 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 clients viewing simultaneously.
A multicast broadcast cannot however, pass a network router unless the router is configured to allow this. It is thus not possi-
ble to multicast over e.g. the Internet.
Note also that all multicast viewers count
as one unicast viewer in the maximum total of 10 simultaneous connnections.

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