IEG4180 Tutorial 11 HTTP Media Streaming Directory Server

1
IEG4180 Tutorial 11 HTTP Media Streaming
Directory Server

• Bosco, Fong Chi Hang

2
HTTP Media Streaming

• HTTP Streaming can be performed by using an
  embedded media player in the webpage
• The embedded media player connects to the local
  web proxy server to fetch the streaming data,
  which are downloaded and sorted by the Streaming
  client

3
HTTP Media Streaming

• Work Flow Example
• Webpage from Directory server generates URL which
  is to be sent to the local web proxy server
• When the local web proxy server receives the URL,
  it will return a webpage that contains the
  embedded media player. It is pointed to the
  specified media file.
• When the Play button is clicked, a HTTP Streaming
  Request for the media file is sent to the local
  web proxy server.
• When the local web proxy server receives the
  request for the media file, it can start
  downloading from the Streaming Server and perform
  the HTTP streaming simultaneously

4
HTTP Media Streaming

• Embedded Media Player Webpage Example (Windows
  Media Player)
• For RealPlayer, Do It Yourself ?

lthtmlgt ltembed type"application/x-mplayer2"
pluginspagehttp//www.microsoft.com/Windows/Med
iaPlayer/ name"mediaplayer1"
ShowStatusBar"true" EnableContextMenu"false
" autostart"false" width"640"
height"480" loop"false" src"http//local
host/202.175.3.3/tcp/2048/sample.mpg " /gt lt/htmlgt
5
Directory Server

• The Directory Server mainly involves two modules
• Statistic Message Listener
• Listens to a specific port for incoming statistic
  messages from Streaming Servers mentioning about
• Files cached
• Range of bytes cached for each file
• Other information
• Simplified Web Server
• Return webpage containing summarized information
  of the availability of the media files, collected
  by the Statistic Message Listener, and provide
  specified URL for users to start streaming