171 lines
2.5 KiB
HTML
171 lines
2.5 KiB
HTML
<HTML
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><HEAD
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><TITLE
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> Overview
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</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
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REL="HOME"
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TITLE="VideoLAN HOWTO"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="
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Video On Demand
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"
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HREF="vod.html"><LINK
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REL="PREVIOUS"
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TITLE="
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Video On Demand
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"
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HREF="vod.html"><LINK
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REL="NEXT"
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TITLE="
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On the server side
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"
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HREF="x1280.html"></HEAD
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><BODY
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CLASS="sect1"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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LINK="#0000FF"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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SUMMARY="Header navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>VideoLAN HOWTO</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="vod.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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>Chapter 11. Video On Demand</TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="x1280.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="sect1"
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><H1
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CLASS="sect1"
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><A
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NAME="AEN1275"
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></A
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>11.1. Overview</H1
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><P
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>With Video On Demand (VOD), the user can start the video when he
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wants, make pauses, go forward and back in the video. It is of course
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the best in video streaming and the dream for every user.</P
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><P
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>VOD is a very big consumer of resources for the server and the
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network. VOD is unicast, not multicast : this means that the network
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and server resources needed are directly proportional to the number of
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clients.</P
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><P
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>The design of VideoLAN's VOD solution is very simple. The idea
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is to do HTTP streaming, i.e. stream an MPEG video encapsulated in
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HTTP. The regulation of the bitrate between the client and the server
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is done automatically by TCP. With HTTP version 1.1, there is the
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possibility to seek in a file downloaded, that's what we use to seek in
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the video.</P
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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SUMMARY="Footer navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="vod.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="index.html"
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ACCESSKEY="H"
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>Home</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="x1280.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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>Video On Demand</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="vod.html"
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ACCESSKEY="U"
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>Up</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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>On the server side</TD
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></TR
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></TABLE
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></DIV
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></BODY
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></HTML
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> |