Extron electronic 68-1998-01 REV. C manual Multicast RTP An Overview, Multicast RTP Streaming

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Multicast RTP — An Overview

Multicast RTP allows a source to be displayed on multiple displays. This method uses a real-time variation of UDP (User Datagram Protocol) called RTP (Real-time Transport Protocol).

RTP	Network	RTP
LAN-1	Network	LAN-1
LAN-2		LAN-2
STATUS		STATUS
VN-MATRIX 225 SERIES		VN-MATRIX 225 SERIES
RGB/DVI OVER IP		RGB/DVI OVER IP

Encoder sends data using RTP to a multicast group.

SOURCE

RTP

LAN-1

LAN-2

STATUS

VN-MATRIX 225 SERIES

RGB/DVI OVER IP

RTP

LAN-1

LAN-2

STATUS

VN-MATRIX 225 SERIES

RGB/DVI OVER IP

RTP

LAN-1

LAN-2

STATUS

VN-MATRIX 225 SERIES

RGB/DVI OVER IP

RTP

Multiple decoders can be part of the multicast group.

DISPLAYS

Figure 2. Multicast RTP Streaming

The source encoder uses RTP to send data to a multicast group. The source does not need to know the IP address of the decoders that are using the source.

RTP provides very low latency which is important for video streaming. Unlike other protocols, RTP packets include a time stamp. If packets are received in the wrong order, they are sorted into the correct order for display or discarded if the time stamp is out-of-date.

However, because RTP is a connectionless protocol, data delivery is not guaranteed. When data packets are lost (for example, due to excessive network traffic), the VN-Matrix 200 / 225 / 300 / 325 devices carefully manage the data stream to minimize any image disruption.

VNM Recorder • Introduction

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Contents User Guide Safety Instructions Specifications Availability FCC Class a NoticeConventions Used in this Guide Contents Reference Information About this Guide About the VNM RecorderOverview of Recorded Streams Overview of Stream PlaybackAbout RAID5 Storage Transport Protocols Used for StreamingDecoder device Multicast RTP An Overview Multicast RTP StreamingUnicast RTP An Overview Unicast RTP StreamingUnicast TCP An Overview Unicast TCP StreamingFeatures DefinitionsFront Panel Features Installation OverviewPanels Cabling Status LED Icons Rear Panel Features Parallel/Printer connector not usedPin connector not active/used Configuration Hardware Setup Setup OverviewVNM Recorder Power Up Procedure VNM Recorder Login ScreenTo change the administrator password Login InformationTo add or change usernames and passwords If the VNM Recorder is not logged into VNM Recorder Power Down ProcedureUsing the Front Panel If the VNM Recorder is logged intoChoosing the Controller Device Using the Keyboard and MouseFrom the login screen From the Linux desktopDefault Network Settings Configuring the VNM RecorderConfiguring the Network and IP Address Settings Ethernet Device Window Confirm Settings Window Stage 2 Setting the controller IP address Config.xml Text Window Configuring the VN-Matrix Encoders and Decoders Stage 3 Restart the VNM RecorderAbout Web-based Overview of the Web-based User InterfaceAccessing the Web-based User Interface Controller LoginWeb-based User Interface Control Options Device ListDevice List Five channel VNM RecorderThat the current and persistent databases remain up-to-date Recorder Device Recorder DeviceVNM Recorder RecorderChannel contains the following parameters Navigate NavigateTo be deleted Make Directory Use this field to add a new directory Player PlayerSelecting a recording for replay Stop Pause Play BookmarkConfig Advanced Configuration ConfigZz Playback Finish This is automatically filled in when FEC Forward Error Correction panel Currently not supported Accounts AccountsClock Management VN-Matrix Encoder and Decoder ConfigurationController Licensing About the Content Directory OverviewContent Directory Basics Navigate Page Content DirectoryCreating a Directory Setting a Stream Storage LocationFolder Icon Loading Icon Alert Icon Understanding Saved Recordings With Multiple Elements Navigate Page Multiple Element RecordingRenaming a Stream or Directory Deleting a Stream or DirectorySetting up a VN-Matrix Codec as a Decoder Initial Setup and ConfigurationRecording Playing Streams Setting up a VN-Matrix Codec as an Encoder Recording a Stream Switching a Codec between Encoder and DecoderRecording Preparation Initialize Recording Stop RecordingPlaying a Recorded Stream Playback PreparationStop Playback Initialize PlaybackPause Playback Start and Finish TimesPlayback of Bookmarked Streams Using BookmarksFile Structure Deleting BookmarksAbout Alarms Alarms Filter SettingsApplying Alarm Filter Settings Alarm TypeAlarm Severity Alarm Severity DescriptionAlarm List Alarms Page Alarm List SortingAlarm Logs Alarm LogsAlarm Type Description Encoder Alarm Reference TablesAlarm Type Description Action Default Settings Alarm Type Description Decoder Alarm Type Description System ControllerIncluded Parts InformationPart Number Guest username matrixrec Guest password matrix Firmware UpdatesPreparing the Firmware Gathering Firmware Installation Information Installing the Firmware Config.xml and Admin.xml Text FilesFirmware Installation Table below Terminal window. Manually close the terminal window Browser Configuration Microsoft Internet Explorer version 7 or abovePer Site Internet Options Custom Level Security Options Mozilla Firefox version 1.3 or above Cookie PreferencesMounting Tower InstallationRack Installation UL Guidelines for Rack MountingRack Mounting Identifying the Sections of the Rack RailsPreparing to Install the Rails Installing the VNM Recorder into a Rack Europe and Africa China USA, Canada, South America Central America JapanAsia Middle East