Axis Communications 241SA MPEG-4 protocols and communication methods, Axis Media Control AMC

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14AXIS 241QA/AXIS 241SA - Video and audio 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 (Real-Time 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 alternative 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 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 network. 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 simultaneously 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.

AXIS Media Control (AMC)

The recommended method of accessing live video and audio from the AXIS 241QA/AXIS 241SA is to use the AXIS Media Control (AMC) in Microsoft Internet Explorer in Windows. This ActiveX component is automatically installed on first use, after which it can be configured by opening the AMC Control Panel applet from the Windows Control Panel. Alternatively, right-click the video image in Internet Explorer.

How to stream MPEG-4

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.

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Contents User’s Manual About This Document Table of contents Axis video server Product description Overview of the Axis video serverNetwork LED indicatorsFront panel Axis 241QA StatusRear panel Switches & connectorsPower Axis 241QA/AXIS 241SA Product description Using the video server Accessing the video serverSetting the root password Please see the online help for more informationLive View AMC Audio controls Motion Jpeg Video and audio streamsVideo stream types MPEG-4Axis Media Control AMC How to stream MPEG-4MPEG-4 protocols and communication methods RTP/RTSP Other methods of accessing the video streamRTP+RTSP RTP/RTSP/HTTP or RTP/RTSP/HTTPSAxis Vapix API Accessing the audio streamsOther MPEG-4 clients Configuring the video server Accessing the Setup toolsImage appearance Video & image settingsImage settings Video source settings AdvancedMjpeg Quad stream settingsOverlay/Mask settings Overlay/Mask typeOverlay image limitations Upload and use an overlay imageOverlay image requirements Image Formats Image SizeUse a Privacy Mask Audio Audio SettingsEnable Audio Audio ChannelsAudio Input Audio Output Advanced Audio SettingsNoise canceller threshold value Noise canceller attenuation Axis 241QA/AXIS 241SA Audio Live View Config LayoutCustomizing the default Upload Own Web FilesDefault Viewer Default Live View VideoDefault Video Format Viewer SettingsCheck Show Custom Link Html ExamplesUser-defined Links Sequence Mode External VideoInstalling PTZ devices Pan Tilt ZoomPTZ configuration Preset positionsPTZ controls Control panel Using CGI links to control PTZ devicesPTZ control modes Advanced Preset positionsGuard tour PTZ control queue Axis 241QA/AXIS 241SA Pan Tilt Zoom Event configuration Event serversTriggered Event How to set up a triggered eventEvent types Click Add triggered on the Event typesScheduled event How to set up a scheduled eventPre-trigger and post-trigger buffers Click Add scheduled on the Event typesSettings Camera tamperingHow to configure Motion Detection Motion detectionPort status Object SizeUsers System optionsSecurity IP Address FilterStream, IP address filtering must be enabled HttpsAxis 241QA/AXIS 241SA System options CA servers Date & timeRadius Services Network Basic TCP/IP settingsIP Address Configuration NTP Configuration Network Advanced TCP/IP settingsDNS configuration Host Name ConfigurationRtsp HttpFTP QoS QoS SettingsSocks Smtp emailSnmp RTP / MPEG-4Support MaintenancePorts & devices Configuration Resetting to the factory default settings Using the Control ButtonPin Unit connectorsD-Sub connector I/O terminal connector Pin Function DescriptionSchematic diagram I/O terminal connector COM ports RS-232 and RS-485Axis 241QA/AXIS 241SA Unit connectors Upgrading the firmware TroubleshootingChecking the firmware Emergency recovery procedure Lit Be accessed from a web browserAlarms, etc, to a destination outside the local network Snapshot images Video Image ProblemsNo images displayed in the Web interface Only I framesAudio Axis 241QA only Audio volume too low/highAudio Advanced Settings Poor audio qualityTechnical specifications ModelsConnectors Video access from WebApplications not General performance considerations Optimizing your systemFrame rates Motion Jpeg Frame rates MPEG-4Bandwidth Active Speaker a speaker with a built-in power amplifier GlossaryCompression See Image Compression De-interlacing See interlacingEncoder See Video encoder Fixed iris See AutoirisHalf-duplex See Full-duplex Megapixel See Pixel Axis 241QA/AXIS 241SA Glossary SSL/TSL Identity of the server Video camera See Network camera and Cctv video cameraAn I-VOP is a complete image frame Http API IndexAction Http API requests Http port number Http serverRTP 14 Rtsp 14 Video streams 13, 15

241SA specifications

Axis Communications, a leader in network video solutions, offers a diverse range of high-performance cameras designed to meet various security needs. One of its notable models is the Axis 241SA video encoder. This device embodies the company's commitment to providing advanced surveillance technology with cutting-edge features.

The Axis 241SA is an ideal solution for organizations looking to enhance their security infrastructure by integrating analog cameras into a digital network. With its ability to support multiple video formats, this video encoder enables operators to convert traditional analog video signals into digital streams efficiently. The device supports both Motion JPEG and MPEG-4 video compression, providing flexibility in terms of image quality and bandwidth use. Users can easily adjust the settings to maximize storage efficiency and optimize network performance.

One of the standout characteristics of the Axis 241SA is its robust support for Power over Ethernet (PoE). This feature simplifies installation by allowing the device to receive power and transmit video data through a single Ethernet cable, reducing the need for additional power sources and streamlining setup processes. The encoder can accommodate four analog video inputs, allowing multiple cameras to be connected, making it a cost-effective solution for small to medium-sized installations.

Furthermore, the Axis 241SA incorporates advanced security features to safeguard video streams and ensure data integrity. The device supports HTTPS encryption and password protection, preventing unauthorized access to camera feeds and configuration settings. This level of security is crucial in today’s digital landscape where cyber threats are prevalent.

The device also comes equipped with a user-friendly web interface, simplifying the operation and configuration process for users. Compatible with various video management software (VMS) solutions, the Axis 241SA allows for seamless integration into existing security systems, enhancing overall monitoring capabilities.

In summary, the Axis Communications 241SA video encoder is a powerful and versatile tool for transitioning from analog to digital surveillance systems. With its support for multiple video formats, PoE capability, strong security measures, and user-friendly interface, the Axis 241SA meets the demands of modern security environments while providing peace of mind to users. It presents an invaluable asset for businesses and organizations aiming to bolster their security infrastructure without compromising on performance or efficiency.