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

Page 11

Unicast RTP — An Overview

Similar to multicast RTP, this method uses a real-time variation of UDP protocol, called unicast RTP. This method can be used where the network infrastructure does not support multicast traffic. Typically, this protocol is used for point-to-point configuration (single source to single display), but can be configured to use up to a maximum of four displays.

NOTE:	The encoder sends an individual stream to each decoder. This means that the
total bandwidth of the VN-Matrix system increases as more decoders are added.

LAN-1

LAN-2

STATUS

VN-MATRIX 225 SERIES

RGB/DVI OVER IP

RTP (1-4)	Network	RTP 1
	Network

LAN-1

LAN-2

STATUS

VN-MATRIX 225 SERIES

RGB/DVI OVER IP

Encoder sends data using RTP to up to 4 speciﬁed decoders.

SOURCE

RTP 2

LAN-1

LAN-2

STATUS

VN-MATRIX 225 SERIES

RGB/DVI OVER IP

RTP 3

LAN-1

LAN-2

STATUS

VN-MATRIX 225 SERIES

RGB/DVI OVER IP

RTP 4

LAN-1

LAN-2

STATUS

VN-MATRIX 225 SERIES

RGB/DVI OVER IP

DISPLAYS

Figure 3. Unicast RTP Streaming

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are received in the wrong order, they are sorted into the correct order for display or discarded if the time stamp is out-of-date.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

5

Image 11

Contents User Guide Safety Instructions FCC Class a Notice Specifications AvailabilityConventions Used in this Guide Contents Reference Information About the VNM Recorder About this GuideOverview of Stream Playback Overview of Recorded StreamsDecoder device Transport Protocols Used for StreamingAbout RAID5 Storage Multicast RTP Streaming Multicast RTP An OverviewUnicast RTP Streaming Unicast RTP An OverviewUnicast TCP Streaming Unicast TCP An OverviewDefinitions FeaturesPanels Cabling Installation OverviewFront Panel Features Status LED Icons Parallel/Printer connector not used Rear Panel FeaturesPin connector not active/used Setup Overview Configuration Hardware SetupVNM Recorder Login Screen VNM Recorder Power Up ProcedureTo add or change usernames and passwords Login InformationTo change the administrator password If the VNM Recorder is logged into VNM Recorder Power Down ProcedureUsing the Front Panel If the VNM Recorder is not logged intoFrom the Linux desktop Using the Keyboard and MouseFrom the login screen Choosing the Controller DeviceConfiguring the Network and IP Address Settings Configuring the VNM RecorderDefault Network Settings Ethernet Device Window Confirm Settings Window Stage 2 Setting the controller IP address Config.xml Text Window Stage 3 Restart the VNM Recorder Configuring the VN-Matrix Encoders and DecodersOverview of the Web-based User Interface About Web-basedController Login Accessing the Web-based User InterfaceDevice List Web-based User Interface Control OptionsFive channel VNM Recorder Device ListThat 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 PlayerStop Pause Play Bookmark Selecting a recording for replayConfig Config Advanced ConfigurationZz Playback Finish This is automatically filled in when FEC Forward Error Correction panel Currently not supported Accounts AccountsController Licensing VN-Matrix Encoder and Decoder ConfigurationClock Management Overview About the Content DirectoryNavigate Page Content Directory Content Directory BasicsFolder Icon Loading Icon Alert Icon Setting a Stream Storage LocationCreating a Directory Navigate Page Multiple Element Recording Understanding Saved Recordings With Multiple ElementsDeleting a Stream or Directory Renaming a Stream or DirectoryRecording Playing Streams Initial Setup and ConfigurationSetting up a VN-Matrix Codec as a Decoder Setting up a VN-Matrix Codec as an Encoder Recording Preparation Switching a Codec between Encoder and DecoderRecording a Stream Stop Recording Initialize RecordingPlayback Preparation Playing a Recorded StreamStart and Finish Times Initialize PlaybackPause Playback Stop PlaybackDeleting Bookmarks Using BookmarksFile Structure Playback of Bookmarked StreamsAbout Alarms Filter Settings AlarmsAlarm Severity Description Alarm TypeAlarm Severity Applying Alarm Filter SettingsAlarms Page Alarm List Sorting Alarm ListAlarm Logs Alarm LogsAlarm Type Description Action Default Settings Alarm Reference TablesAlarm Type Description Encoder Alarm Type Description System Controller Alarm Type Description DecoderPart Number InformationIncluded Parts Preparing the Firmware Firmware UpdatesGuest username matrixrec Guest password matrix Gathering Firmware Installation Information Config.xml and Admin.xml Text Files Installing the FirmwareFirmware Installation Table below Terminal window. Manually close the terminal window Microsoft Internet Explorer version 7 or above Browser ConfigurationPer Site Internet Options Custom Level Security Options Cookie Preferences Mozilla Firefox version 1.3 or aboveUL Guidelines for Rack Mounting Tower InstallationRack Installation MountingIdentifying the Sections of the Rack Rails Rack MountingPreparing to Install the Rails Installing the VNM Recorder into a Rack Asia Middle East USA, Canada, South America Central America JapanEurope and Africa China