AXIS Q1602 Network Camera
Media Streams
Media Streams
The Axis product provides several audio and video stream formats. Your requirements and the properties of your n etw ork will
determine the type you use.
The Live View page in the product provides access to H .264 and Motion JPEG video streams, audio streamsandtothelistofavailable
stream profiles. Other applications and clients can access video and audio streams directly, without going via the Live View page.
How to Stream H.264
The video compression standard H.264 makes good use of bandw idth, and can p rovide high quality video streams at less than 1 Mbit/s.
Deciding which combination of protocols and methods to use depend s 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 wh en it is
important to always have an up-to-date video
stream, even if some images are dropped.
RTP over RTSP
This unicast method (RTP tunneled over RTSP)
is useful as it is rela tively simple to con figure
firewallstoallowRTSPtraffic.
RTP over RTSP over HTTP
This unicast method can be used to traverse
firewalls. Firewalls are commonly configured 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 ffic
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 o ver UDP) should be used for liv e multicast video. The video stream is alw a ys
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 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 pr oduct to d etermine the tra nspo rt pro tocol 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 viewing clie nt license. Install ing additional unlicense d
copies of the client is prohibited. To
purchase additional lice n se s, contact your Axis reseller.
MJPEG
This format use s standard JPEG still images f or the video strea m. These images are then displayedandupdatedataratesufficient
to create a stream that sho ws constantly updated motion.
The Motion JPEG stream uses considerable amounts of b andw idth, but provides excellent image qualityandaccesstoeveryimage
contained in the stream. The recommended method of accessing Motion JPEG live v id eo from the Axis product is to use the AXIS
Media Control in Intern et Explorer in Windows.
AXIS Media Control (AMC)
AXIS Media Control (AMC) in Internet Explorer in Windows is the recom m ended method of acces sing live video from the Ax is product.
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