How to stream MPEG-4

12AXIS 225FD - Video Streams

MPEG-4 protocols and communication methods

To deliver live streaming video over IP networks, various combinations of transport protocols and broadcast methods are employed.

•RTP (Realtime Transport Protocol) is a protocol that allows programs to manage the real-time transmission of multimedia data, via unicast or multicast.

•RTSP (Real Time Streaming Protocol) serves as a control protocol, to negotiate which transport protocol to use for the stream. RTSP is thus used by a viewing client to start a unicast session, see below.

•UDP (User Datagram Protocol) is a communications protocol that offers limited service for exchanging data in a network that uses the Internet Protocol (IP). UDP is an alterna- tive to the Transmission Control Protocol (TCP). The advantage of UDP is that it is not required to deliver all data and may drop network packets when there is e.g. network congestion. This is suitable for live video, as there is no point in re-transmitting old information that will not be displayed anyway.

•Unicasting is communication between a single sender and a single receiver over a net- work. This means that the video stream goes independently to each user, and each user gets their own stream. A benefit of unicasting is that if one stream fails, it only affects one user.

•Multicast is bandwidth-conserving technology that reduces bandwidth usage by simul- taneously delivering a single stream of information to multiple network recipients. This technology is used primarily on delimited networks (intranets), as each user needs an uninterrupted data flow and should not rely on network routers.

Deciding on the combination of protocols and methods to use depends on your viewing requirements, and on the properties of your network. Setting the preferred method(s) is done in the control applet for AMC, which is found in the Windows Control Panel. When this has been set, AMC will test all the selected methods in the specified order, until the first functioning one is found.

RTP+RTSP

This method (actually RTP over UDP and RTSP over TCP) should be your first consideration for live video, especially when it is important to always have an up-to-date video stream, even if some images do get dropped. This can be configured as multicast or unicast.

Multicasting provides the most efficient usage of bandwidth, especially when there are large numbers of clients viewing simultaneously. Note however, that a multicast broadcast cannot pass a network router unless the router is configured to allow this. It is thus not possible to multicast over e.g. the Internet.

225FD specifications

Axis Communications, a pioneer in network video solutions, continues to innovate with the introduction of the Axis 225FD, a cutting-edge fixed dome network camera designed to enhance surveillance capabilities in various environments. This device strives to meet the demanding requirements of modern security by combining advanced imaging technology with user-friendly features.

One of the standout characteristics of the Axis 225FD is its exceptional image quality. It boasts a high-resolution sensor capable of capturing detailed images even in low light conditions. This is further enhanced by Axis' Wide Dynamic Range (WDR) technology, which ensures that both bright and dark areas within a scene are clearly visible. This feature is particularly useful in dynamic lighting situations, such as entryways where bright sunlight may contrast with shaded areas.

The Axis 225FD is equipped with a built-in microphone to capture audio along with video, adding another layer of context to footage. This feature is invaluable for various applications, allowing security personnel to not only see but also hear events as they unfold, leading to more comprehensive situational awareness.

For adaptability, the camera supports PoE (Power over Ethernet), simplifying installation by allowing both power and data transfer through a single cable. This efficiency means less clutter and easier setup, making the Axis 225FD suitable for diverse installation environments, including retail spaces, offices, and public areas.

In terms of security features, the Axis 225FD supports multiple streams, enabling different resolutions for different scenarios. This flexibility ensures that users can tailor the video quality based on their bandwidth constraints while maintaining critical surveillance capabilities. Moreover, the camera is equipped with tampering alarms that send notifications if it is moved or obstructed, further bolstering security measures.

Durability is another critical consideration with the Axis 225FD. Designed to withstand the rigors of various environments, the camera is housed in a robust casing that protects it from dust and moisture, meeting IP66 and IK08 standards. This resilience ensures that the camera remains operational in challenging conditions, providing reliable surveillance year-round.

In summary, the Axis Communications 225FD is a state-of-the-art surveillance solution that excels in key areas such as image quality, audio capture, installation flexibility, and security features. With its durable design and advanced technologies, it stands out as a top choice for organizations looking to enhance their monitoring capabilities and ensure the safety of people and assets.