Red5 vs FMS - Kanwal Rekhi fileOpenMeetings DimDim Neeraj Toshniwal (IIT BOMBAY CSE) Red5 vs FMS...

Red5 vs FMS

Neeraj Toshniwal

IIT BOMBAYCSE

August 9, 2012

Neeraj Toshniwal (IIT BOMBAY CSE) Red5 vs FMS August 9, 2012 1 / 12

Overview

Overview

Introduction

Web Conferencing Tools

Major Issues with Web Conferencing Tools

Red5 Media Server

Comparison of Red5 with FMS

ActionScript

Future Work

References


Introduction

Introduction

E-learning consists of following components:

live video streamingsupporting slides/animationsinteractive chat moduleintegrated whiteboard support

A-View(Amrita - Virtual Interactive E-Learning World) : ProperiteryE-Learning Tool

Few of Open Source Web Conferencing Tools:

BigBlueButtonOpenMeetingsDimDim


Introduction

Introduction







Introduction

Introduction







Introduction

Introduction









BigBlueButtonGeneral purpose web conferencing toolUses 14 open source components including Red5 as the media streaming serverPros:-

Provides all the basic features eg whiteboard module,chat module etcGUI very user-friendlyMobile Device Support

Cons:-Failure of lip syncing with videoUses separate channel for transmission of audio and videoServer side encoding done so transmission delay can’t be diminished

OpenMeetingsBrowser based conferencing toolLicensed under EPL(Eclipse Public License) 1.0Uses Red5 as media streaming serverPros:-

Nice interface to register and manage meetingsSupports attractive themes, various color schemesCo-browing allowed

Cons:-Lack of detailed documentation for application development perspectiveServer side encoding too




BigBlueButton

General purpose web conferencing toolUses 14 open source components including Red5 as the media streaming serverPros:-









BigBlueButtonGeneral purpose web conferencing tool

Uses 14 open source components including Red5 as the media streaming serverPros:-









BigBlueButtonGeneral purpose web conferencing toolUses 14 open source components including Red5 as the media streaming server

Pros:-Provides all the basic features eg whiteboard module,chat module etcGUI very user-friendlyMobile Device Support


















Provides all the basic features eg whiteboard module,chat module etc

GUI very user-friendlyMobile Device Support









Provides all the basic features eg whiteboard module,chat module etcGUI very user-friendly

Mobile Device SupportCons:-

Failure of lip syncing with videoUses separate channel for transmission of audio and videoServer side encoding done so transmission delay can’t be diminished


















Cons:-

Failure of lip syncing with videoUses separate channel for transmission of audio and videoServer side encoding done so transmission delay can’t be diminished









Cons:-Failure of lip syncing with video

Uses separate channel for transmission of audio and videoServer side encoding done so transmission delay can’t be diminished









Cons:-Failure of lip syncing with videoUses separate channel for transmission of audio and video

Server side encoding done so transmission delay can’t be diminished



















OpenMeetings

Browser based conferencing toolLicensed under EPL(Eclipse Public License) 1.0Uses Red5 as media streaming serverPros:-









OpenMeetingsBrowser based conferencing tool

Licensed under EPL(Eclipse Public License) 1.0Uses Red5 as media streaming serverPros:-









OpenMeetingsBrowser based conferencing toolLicensed under EPL(Eclipse Public License) 1.0

Uses Red5 as media streaming serverPros:-









OpenMeetingsBrowser based conferencing toolLicensed under EPL(Eclipse Public License) 1.0Uses Red5 as media streaming server

Pros:-Nice interface to register and manage meetingsSupports attractive themes, various color schemesCo-browing allowed


















Nice interface to register and manage meetings

Supports attractive themes, various color schemesCo-browing allowed









Nice interface to register and manage meetingsSupports attractive themes, various color schemes

Co-browing allowedCons:-

Lack of detailed documentation for application development perspectiveServer side encoding too


















Cons:-

Lack of detailed documentation for application development perspectiveServer side encoding too









Cons:-Lack of detailed documentation for application development perspective

Server side encoding too












Web Conferencing Tools(Continued..)

A-VIEW

joint venture of Amrita University,ISRO,TIFAC India and Indo-US eLearningInitiativeUses FMS as media streaming serverPros:-

Multiple as well as single display screens at client sideUses the notion of Active and Passive servers cluster where former is used forserving live users and latter is used for serving newly logged in usersaudio/video synchronization satisfied

Cons:-

Not a Open Source Project




A-VIEW

joint venture of Amrita University,ISRO,TIFAC India and Indo-US eLearningInitiative

Uses FMS as media streaming serverPros:-


Cons:-





A-VIEW

joint venture of Amrita University,ISRO,TIFAC India and Indo-US eLearningInitiativeUses FMS as media streaming server

Pros:-


Cons:-





A-VIEW



Cons:-





A-VIEW


Multiple as well as single display screens at client side

Uses the notion of Active and Passive servers cluster where former is used forserving live users and latter is used for serving newly logged in usersaudio/video synchronization satisfied

Cons:-





A-VIEW


Multiple as well as single display screens at client sideUses the notion of Active and Passive servers cluster where former is used forserving live users and latter is used for serving newly logged in users

audio/video synchronization satisfied

Cons:-





A-VIEW



Cons:-





A-VIEW



Cons:-





A-VIEW



Cons:-



major Issues with Web Conferencing Tools


Managing bandwidth load on the server

Problem:-

Delay experienced increases exponentially as number of users increases linearly

Solution:-

Restrict the number of users to access concurrentlyLoad BalancingVirtual Servers

Maintaining steady stateProblem:-

system loses stability as it serves beyond its limit

Solution:-

use of multiple clusters where each cluster serve different type of users orperform different type of tasks

Limit on number of usersProblem:-

unwanted load on bandwidth required on the server

Solution:-

rewamping architecture preventing transmission of unwanted data




Managing bandwidth load on the serverProblem:-


Solution:-




Solution:-




Solution:-







Solution:-




Solution:-




Solution:-







Solution:-


Maintaining steady state

Problem:-


Solution:-




Solution:-







Solution:-




Solution:-




Solution:-







Solution:-




Solution:-




Solution:-







Solution:-




Solution:-


Limit on number of users

Problem:-


Solution:-







Solution:-




Solution:-




Solution:-







Solution:-




Solution:-




Solution:-



Red5 Media Server

Red5 Media Server

Many open source streaming media servers like Red5, Darwin, FluMotion,VLC etc

Red5 most suitable candidate

transmit chat texts and other data like control information related topresentation module and whiteboard in addition to multimedia data streaming

Open source clone of Adobe Flash Media Server

Provides all the basic functionalities that FMS provides

mainly used for VOD, live streaming of audio/video

uses AMF(Action Message Format) to communicate with the thirdparty(Flash Player)

uses two techniques for communication:-Flash remoting

AMF sent over HTTPideal for chat transmission

RTMP

AMF sent over TCPideal for audio/video transmission


Red5 Media Server

Red5 Media Server










RTMP



Red5 Media Server

Red5 Media Server










RTMP



Red5 Media Server

Red5 Media Server










RTMP



Red5 Media Server

Red5 Media Server










RTMP



Red5 Media Server

Red5 Media Server










RTMP



Red5 Media Server

Red5 Media Server










RTMP



Red5 Media Server

Red5 Media Server








uses two techniques for communication:-

Flash remoting


RTMP



Red5 Media Server

Red5 Media Server










RTMP



Red5 Media Server

Red5 Media Server









AMF sent over HTTP

ideal for chat transmission

RTMP



Red5 Media Server

Red5 Media Server










RTMP



Red5 Media Server

Red5 Media Server










RTMP



Red5 Media Server

Red5 Media Server










RTMP

AMF sent over TCP

ideal for audio/video transmission


Red5 Media Server

Red5 Media Server










RTMP



Red5 Media Server

Red5 Media Server(Continued..)

Steps followed for audio/video transmission

Flash player originates data as AMF objectAMF object is encapsulated in XML fileXML file is submitted through POST methodServer response is also encapsulated in XML and sent to the flash playerFlash player converts the received XML to AMF

RTMP : port 1935

RTMPT : 8088

HTTP servlet engine : 5080

Default Client: Flash player


Red5 Media Server



Flash player originates data as AMF object

AMF object is encapsulated in XML fileXML file is submitted through POST methodServer response is also encapsulated in XML and sent to the flash playerFlash player converts the received XML to AMF

RTMP : port 1935

RTMPT : 8088




Red5 Media Server



Flash player originates data as AMF objectAMF object is encapsulated in XML file

XML file is submitted through POST methodServer response is also encapsulated in XML and sent to the flash playerFlash player converts the received XML to AMF

RTMP : port 1935

RTMPT : 8088




Red5 Media Server



Flash player originates data as AMF objectAMF object is encapsulated in XML fileXML file is submitted through POST method

Server response is also encapsulated in XML and sent to the flash playerFlash player converts the received XML to AMF

RTMP : port 1935

RTMPT : 8088




Red5 Media Server



Flash player originates data as AMF objectAMF object is encapsulated in XML fileXML file is submitted through POST methodServer response is also encapsulated in XML and sent to the flash player

Flash player converts the received XML to AMF

RTMP : port 1935

RTMPT : 8088




Red5 Media Server



Flash player originates data as AMF objectAMF object is encapsulated in XML fileXML file is submitted through POST methodServer response is also encapsulated in XML and sent to the flash playerFlash player converts the received XML to AMF

RTMP : port 1935

RTMPT : 8088






Criteria Red5 FMSProtocolsSupported

RTMPRTMPTRTMPSRTMPERTMPTE

RTMPRTMPTRTMPSRTMPERTMPTERTMFP

Server Side Java ActionScriptNature Open Source Proprietary

Table: Comparison of Red5 with FMS

Note :- Both Red5 and FMS have protocol and port issues


ActionScript

ActionScript

Object Oriented Language

Used extensively in development of websites using Flash Player i.e in videoapplication websites

C based programming

Adobe Flex : Open source compiler

used on web page in the form of embedded swf files

mxml used for GUI


ActionScript

ActionScript



C based programming



mxml used for GUI


ActionScript

ActionScript



C based programming



mxml used for GUI


ActionScript

ActionScript



C based programming



mxml used for GUI


ActionScript

ActionScript



C based programming



mxml used for GUI


ActionScript

ActionScript



C based programming



mxml used for GUI


Future Work

Future Work

Demo of functioning of Red5 Media Server

Study of Iteach : supplement to A-VIEW

Comparison of features provided by Iteach against A-VIEW

Study the code and figuring out the implementation of features specified

Features that can be added to current version of Iteach to make it moreuser-friendly

Study the performance of Iteach


Future Work

Future Work








Future Work

Future Work








Future Work

Future Work








Future Work

Future Work








Future Work

Future Work








References

References

1 Open Source Web Referencing Tool for distance Education, MTP Report,Satyanarayan Sahoo, 2011

2 http://en.wikipedia.org/wiki/ActionScript

3 http://en.wikipedia.org/wiki/BigBlueButton

4 http://en.wikipedia.org/wiki/Comparison of web conferencing software


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