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AXIS M7014
Media Streams
Media Streams
The Axis product provide s s evera l video stream form a ts. Your requirements and the properties of your netw o rk will determine the
type you use.
The Live View page in the product provides access to H.264 and M otion JPEG video streams, and to the list of available stream profiles.
Other applications and clients can access video streams directly, without going via the Live View p age.
How to Stream H.264
The video compression standard H .264 makes good use of bandwidth, and can provide high quality vid eo 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:
Unicast RTP
This unicast method (RTP over UDP) is used
for live unicast video, especially w hen it is
important to always have an up-to-date video
stream, e ven if some images are dropped.
RTP over RTSP
This unicast method (RTP tunneled over RTSP)
is useful as it is relatively simple to con figure
firewallstoallowRTSPtraffic.
RTP over RTSP over H TTP
This unicast method can be used to traverse
firewalls. Firewalls are comm only con figured to
allow the H TTP protocol, thus allowing RTP to
be tunneled.
Unicasting is used for video-on-demand
transmission so that there is no video tra ffi c
on the network until a client connects and
requests the stream.
Note that there are a maximum of 20
simultaneous unicast connections.
Multicast RTP
This method (RTP over UDP) should be used for live m ulticast video. The video stream is always
up-to-date, even if some images are dropped.
Multicasting provides the most efficient usag e of bandwidth when there are large numbers of
clients 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 a lso that all multicast viewers count as one unicast viewer in the maximum total of 20
simultaneous connections.
AXIS Media Control negotiates with the Axis product to determine the transpo rt protocol to use. The order of priority, listed in the
AMC Control Panel, can be changed and the options disabled, to suit specific requirements.
Note
H.264 is licensed technology. The Axis product includes one H.264 viewin g client license. Installing ad ditional unlicensed
copies of the client is prohibited. To
purchase additional lice nses, contac t your Axis reseller.
MJPEG
This format uses standard JPEG s t ill im ages for the video stream. These images are then displayedandupdatedataratesufficient
to create a stream that sho ws constantly updated m o tion.
The Motion JPEG stream uses considerable amounts of bandwidth, b ut provides excellent image qualityandaccesstoeveryimage
contained in the stream. The recommended method of accessing Motion JPEG live video from the Axis product is to use the AXIS
Media Control in Intern et Explorer in Windows.
AXIS Media Control (AMC)
AXIS Media C ontrol (AMC) in Internet Explorer in Window s is the recom m e nded method of accessing live video from the Ax is product.
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