[xiph-commits] r6985 - websites/theora.org
atamido at dactyl.lonelymoon.com
atamido
Mon Jul 5 00:52:18 PDT 2004
Author: atamido
Date: Mon Jul 5 00:52:18 2004
New Revision: 6985
Modified:
websites/theora.org/theorafaq2.html
Log:
Corrected lots of capitalization, removed the word "stupid", and made a link out of a URL.
Modified: websites/theora.org/theorafaq2.html
===================================================================
--- websites/theora.org/theorafaq2.html 2004-07-04 21:14:45 UTC (rev 6984)
+++ websites/theora.org/theorafaq2.html 2004-07-05 07:52:15 UTC (rev 6985)
@@ -1,498 +1,498 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 TRANSITIONAL//EN"
- "http://www.w3.org/TR/html4/loose.dtd">
-<html>
-<head>
-<title>theora.org :: FAQ</title>
-<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
-<style type="text/css">
- @import url(style.css);
-
-</style>
-</head>
-<body bgcolor="#666699" text="#000000" alink="#000000">
-<table width="500" border="0" cellspacing="0" cellpadding="2" align="center">
- <tr>
- <td bgcolor="#000000">
- <table width="100%" border="0" cellspacing="0" cellpadding="0">
- <tr>
- <td bgcolor="#EEEEEE" align="left">
- <table width="100%" border="0" cellspacing="0" cellpadding="0">
- <tr>
- <td valign="top" align="left">
- <table border="0" cellspacing="0" cellpadding="0">
- <tr>
- <td width="50" height="50" bgcolor="#444466" class="tl">
- </td>
- <td align="right" valign="top">
- <table border="0" cellspacing="0" cellpadding="0">
- <tr>
- <td bgcolor="#9898BA" width="25" height="25" class="tl"> </td>
- </tr>
- </table>
- </td>
- </tr>
- <tr>
- <td valign="bottom">
- <table border="0" cellspacing="0" cellpadding="0">
- <tr>
- <td bgcolor="#9898BA" width="25" height="25" class="tl"> </td>
- </tr>
- </table>
- </td>
- <td valign="bottom"> </td>
- </tr>
- </table>
- </td>
- <td valign="top" align="right">
- <table border="0" cellspacing="0" cellpadding="0">
- <tr>
- <td class="nutrition" align="right">
- <!-- Title (HINT: Shorter is better.)
--->theora.org<!-- Close Title -->
- </td>
- </tr>
- <tr>
- <td align="right">
- <table border="0" cellspacing="0" cellpadding="0">
- <tr>
- <!-- Menu (HINT: Each item is inside a <td>.)-->
- <td class="menu"> <a
-href="http://www.theora.org">Home</a></td>
- <td class="menu"><a
-href="http://www.theora.org/theorafaq.html">FAQ</a></td>
- <td class="menu"><a
-href="http://www.theora.org/lists.html">Mailing Lists</a></td>
- <td class="menu"><a
-href="http://www.theora.org/svn.html">SVN</a></td>
- <td class="menu"><a
-href="http://www.theora.org/contact.html">Contact</a></td>
- <td class="menu"><a
-href="http://www.xiph.org">Xiph.org</a></td>
- <!-- Close Menu -->
- </tr>
- </table>
- </td>
- </tr>
- </table>
- </td>
- </tr>
- </table>
- </td>
- </tr>
- <tr>
- <td bgcolor="#EEEEEE">
- <table width="100%" border="0" cellspacing="0" cellpadding="0">
- <tr>
- <td valign="top">
- <table width="100%" border="0" cellspacing="0" cellpadding="10">
- <tr>
- <td>
- <!-- Main Content -->
-<h1 class="headline">Theora FAQ</h1>
-<a href="#what"><b>What is theora</b></a>
-<br>
-<ul>
- <li><a href="#10">What is theora?</a></li>
- <li><a href="#11">Why use theora?</a></li>
- <li><a href="#12">What other video formats will Theora compete with?</a></li>
- <li><a href="#13">What is Ogg? What is Vorbis? What is xiph.org?</a></li>
- <li><a href="#14">What is the license for Theora?</a></li>
- <li><a href="#15">Why the name 'Theora?'</a></li>
-</ul>
-<a href="#vp3"><b>Theora and VP3</b></a>
-<ul>
- <li><a href="#20">Is the Theora bitstream identical to VP3? </a></li>
- <li><a href="#21">What can Theora do that VP3 couldn't do? </a></li>
- <li><a href="#22">How will I transition my old VP3 files to the new format?</a></li>
- <li><a href="#23">Can I convert Ogg Theora files into VP3?</a></li>
- <li><a href="#24">Isn't vp3 a patented technology? </a></li>
- <li><a href="#25">What if Xiph.org and On2 decide to break off their agreement? </a></li>
-</ul>
-<br>
-<a href="#development"><b>Development</b></a>
-<ul>
- <li><a href="#30">When will it all be finished? Can I use it right now?</a></li>
- <li><a href="#31">What is an Alpha Release?</a></li>
- <li><a href="#32">What is Tarkin? </a></li>
- <li><a href="#33">How can I help with development?</a></li>
- <li><a href="#34"> How will Ogg Theora interoperate with [insert your favorite media architecture]?</a></li>
- <li><a href="#35">How can I donate to these amazing projects?</a></li>
-</ul>
-<br>
-<a href="#working"><b>Using Theora</b></a>
-<ul>
- <li><a href="#40">What players currently support Theora?</a></li>
- <li><a href="#41">How can I encode videos to theora?</a></li>
- <li><a href="#42">Is there any way to use Theora on Microsoft Windows at this point?</a></li>
-</ul>
-<br>
-<a href="#misc"><b>Misc and Credits</b></a>
-<ul>
- <li><a href="#50">Who's in charge of Theora development?</a></li>
- <li><a href="#51">Who designed this website? </a></li>
- <li><a href="#52">Who is the webmaster of this site?</a></li>
- <li><a href="#53">Who maintains The Glorious Theora FAQ?</a></li>
- <li><a href="#54">When was this FAQ last updated?</a></li>
-</ul>
-<br>
-<a name="what"></a><b>What is Theora</b>
-<br>
-<br>
-<a name="10"></a>
-<b>Q. What is theora?</b><br>
-<div class="txt">
-Theora is a <b>open</b> video codec being developed by the Xiph.org
-Foundation as part of their Ogg project (It is a project that aims to
-integrate On2's <a href="http://en.wikipedia.org/wiki/VP3">VP3</a>
-video codec, Ogg <a href="http://www.vorbis.com/">Vorbis</a> audio codec
-and Ogg multimedia container formats into a multimedia solution that can
-compete with <a href="http://en.wikipedia.org/wiki/MPEG-4">MPEG-4</a> format).
-<br> Theora is derived directly
-from On2's VP3 codec; Currently the two are nearly identical, varying
-only in framing headers, but Theora will diverge and improve from
-the main VP3 development lineage as time progresses.
-</div>
-<br>
-<br>
-<a name="11"></a>
-<b>Q. Why use theora?</b><br>
-<div class="txt">
-Its open and free. Do you need more reasons?
-</div>
-<br>
-<br>
-<a name="12"></a>
-<b>Q. What other video formats will Theora compete with?</b><br>
-<div class="txt">
- Theora is targeted at competing with MPEG-4 (e.g., XviD and DivX),
-RealVideo, Windows Media Video, and similar lower-bitrate video
-compression schemes.
-</div>
-<br>
-<br>
-<a name="13"></a>
-<b>Q. What is Ogg? What is Vorbis? What is xiph.org?</b><br>
-<div class="txt">
- <a href="http://www.vorbis.com/">Vorbis</a> is an audio codec,
-Theora is a video codec. Ogg is the transport layer that both are stored in,
-so a video file will be Theora-encoded data inside an Ogg file, while audio
-is normally Vorbis-encoded data inside an ogg file.
-<br>
- The <a href="http://www.xiph.org/">Xiph.org</a> Foundation is a
-Delaware non-profit company devoted to producing, maintaining and
-supporting an open multimedia platform.
-</div>
-<br>
-<br>
-<a name="14"></a>
-<b>Q. What is the license for Theora?</b><br>
-<div class="txt">
-Theora (and all associated technologies released by the Xiph.org
-Foundation) is released to the public via a BSD-style license. It is
-completely free for commercial or noncommercial use. That means that
-commercial developers may independently write Theora software which is
-compatible with the specification for no charge and without restrictions of
-any kind.
-</div>
-<br>
-<br>
-<a name="15"></a>
-<b>Q. Why the name 'Theora?'</b><br>
-<div class="txt">
-Like other Xiph.org Foundation codec projects such as Vorbis or Tarkin,
-Theora is named after a fictional character. Theora Jones was the name of
-Edison Carter's 'controller' on the television series Max Headroom. She was
-played by Amanda Pays.
-</div>
-<br>
-<br>
-<a name="vp3"></a>
-<b>Theora and VP3 </b>
-<br>
-<br>
-<a name="20"></a>
-<b>Q. Is the Theora bitstream identical to VP3?</b><br>
-<div class="txt">
- Yes and No. Theora is a superset of VP3, so VP3 streams (with minor
-syntactic modifications) can be made into Theora streams without
-recompression (but not vice versa).
-<br>
- Theora will be almost entirely based upon the VP3 codec designed by On2.
-However, Theora video data will be delivered inside of the Ogg container
-format (with Vorbis for audio), so Ogg Theora files will not be the same as
-VP3 files. There also may be quite a few performance advantages to using
-Theora when 1.0 is complete; While our focus is integration, there will
-certainly be a lot of optimization involved, as well.
-</div>
-<br>
-<br>
-<a name="21"></a>
-<b>Q. What can Theora do that VP3 couldn't do?</b><br>
-<div class="txt">
- The major change from VP3 to Theora is architectural. VP3, like most
-codecs of today, makes certain assumptions about the nature of the material
-it compresses. These assumptions take the form of fixed sets of numeric
-values, such as quantization matrices, which control how different
-frequency components of the signal are handled, and token frequency tables,
-which control the efficiency of post-transform lossless coding. In Theora,
-we have leveraged the intrinsic flexibility of the Ogg multimedia framework
-to allow the encoder to modify these values appropriately for the material.
-This simple, powerful approach has already been proven effective in Vorbis,
-and will allow for a longer cycle of encoder optimization without requiring
-client-side updates.
-</div>
-<br>
-<br>
-<a name="22"></a>
-<b>Q. How will I transition my old VP3 files to the new format?</b><br>
-<div class="txt">
- Because Theora is a 'superset' of VP3, tools can easily be created that
-will allow VP3 files to be losslessly transcoded into Ogg Theora format
-with no loss in quality.
-</div>
-<br>
-<br>
-<a name="23"></a>
-<b>Q. Can I convert Ogg Theora files into VP3?</b><br>
-<div class="txt">
- Why would you want to do something stupid like that? Are you nuts?
-</div>
-<br>
-<br>
-<a name="24"></a>
-<b>Q. Isn't vp3 a patented technology?</b><br>
-<div class="txt">
- Yes, some portions of the vp3 codec are covered by patents. However, the
-Xiph.org Foundation has negotiated an irrevocable free license to the vp3
-codec for any purpose imaginable on behalf of the public. It is legal to
-use vp3 in any way you see fit (unless, of course, you're doing something
-illegal with it in your particular jurisdiction). You are free to download
-vp3, use it free of charge, implement it in a for-sale product, implement
-it in a free product, make changes to the source and distribute those
-changes, or print the source code out and wallpaper your spare room with
-it.
-<br>
-For more information, check the VP3 Legal Terms on the SVN page
-</div>
-<br>
-<br>
-<a name="25"></a>
-<b>Q. What if Xiph.org and On2 decide to break off their agreement?</b><br>
-<div class="txt">
- Because Theora is an Open Source project, the source code will continue to
-be available and development will continue. Users will still be protected
-from the On2 patents.
-</div>
-<br>
-<br>
-<a name="development"></a>
-<b>Development </b>
-<br>
-<br>
-<a name="30"></a>
-<b>Q. When will it all be finished? Can I use it right now?</b><br>
-<div class="txt">
-Theora alpha 3 is out and bitstream format is now frozen. So, files produced by
-the alpha 3 reference encoder will be supported by all future decoders. But, still it
-is not complete and many bugs are yet to be fixed.
-</div>
-<br>
-<br>
-<a name="31"></a>
-<b>Q. What is an Alpha Release?</b><br>
-<div class="txt">
-Typically when software is created at a software company, it goes through a number of stages
-before it's released out to the world. You've probably heard of 'beta-testing' before. That's
-when people take code that has been deemed 'not quite ready' and are testing it out so that
-the authors can fix bugs where necessary.
-<br>
-'Alpha' code is strictly for internal development only, which is to say, 'No one sees this code,
-it's not even close to being done yet.' At the Xiph.org Foundation, we release everything we do
-so that people can help us move the codebase forward by reporting bugs and submitting patches.
-So, even 'Alpha' code needs to get out to the world.
-<br>
-We encourage and depend on the open-source developer community to get
-involved early. We release Alpha builds to give these hearty souls a chance
-to see what's cooking, and perhaps to add some ingredients of their own. If
-you think you have the right stuff, please join the party at
-www.theora.org/lists.
-</div>
-<br>
-<br>
-<a name="32"></a>
-<b>Q. What is Tarkin?</b><br>
-<div class="txt">
-Tarkin is essentially a proof-of-concept wavelet-based codec. Its
-experimental nature means it will not be ready for general use for some
-time. VP3 is a high-quality codec that can meet today's video needs now, so
-Xiph.org will be focusing its efforts on Theora for the near future.
-</div>
-<br>
-<br>
-<a name="33"></a>
-<b>Q. How can I help with development?</b><br>
-<div class="txt">
-Head on over to the <a href="http://www.theora.org/svn.html">SVN</a>
- page to grab the codebase, and hack away! Post your contributions online,
- and tell us about it on the <a href="http://www.theora.org/lists.html">theora-dev
-</a> mailing list.
-</div>
-<br>
-<br>
-<a name="34"></a>
-<b>Q. How will Ogg Theora interoperate with [insert your favorite media architecture]?</b><br>
-<div class="txt">
- As the Ogg Vorbis format has gained acceptance, components have become
-available to play Ogg files on practically all of the major media players.
-We expect a similar if not superior level of support for Ogg Theora.
-Developers wanted! (if you're interested, sign up for the
-theora-codecs at xiph.org mailing list).
-</div>
-<br>
-<br>
-<a name="35"></a>
-<b>Q. How can I donate to these amazing projects?</b><br>
-<div class="txt">
- Wow, thanks! You can find more information on donating to the Xiph.org
-Foundation by following <a href="http://www.xiph.org/ogg/vorbis/donate.html">
-this link</a>! Thanks in advance!
-</div>
-<br>
-<br>
-<a name="working"></a>
-<b>Using Theora </b>
-<br>
-<br>
-<a name="40"></a>
-<b>Q. What players currently support Theora?</b><br>
-<div class="txt">
-Major players like <a href="http://www.mplayerhq.hu/">mplayer</a>,
-<a href="http://www.xinehq.de/">xine</a>, <a
-href="http://www.helixcommunity.org">helix player</a> and <a
-href="http://www.videolan.org/">VideoLAN</a> supports theora.
-Directshow <a href="http://www.illiminable.com/ogg/">filters</a>
-are also available for use on Windows platform.
-</div>
-<br>
-<br>
-<a name="41"></a>
-<b>Q. How can I encode videos to theora?</b><br>
-<div class="txt">
- Have a look at <a
-href="http://www.dogphilosophy.net/SECTION-Technical_Stuff/ogg-theora-microhowto.html">
-ogg-theora-microhowto</a> and <a href="http://www.annodex.net/anx_theora.html">transcode
-</a>quickTime mov files to theora files under Linux.
-</div>
-<br>
-<br>
-<a name="42"></a>
-<b>Q. Is there any way to use Theora on Microsoft Windows at this point?</b><br>
-<div class="txt">
-Yes, you can use your theora files on windows using <a
-href="http://www.illiminable.com/ogg/">Directshow filters</a>. <a
-href="http://ffdshow.sourceforge.net/">FFdshow</a> also has support for theora. You
-can also try <a href="http://www.videolan.org/">vlc</a>, realplayer <a
-href="https://helixcommunity.org/project/showfiles.php?group_id=7">
-theora plugins</a> or <a href="http://www.mplayerhq.hu/">mplayer for windows</a>.
-</div>
-<br>
-<br>
-<a name="misc"></a>
-<b>Misc and Credits </b>
-<br>
-<br>
-<a name="50"></a>
-<b>Q. Who's in charge of Theora development?</b><br>
-<div class="txt">
-The Xiph.org Foundation is the primary developer of Theora, but this is
-mainly an integration issue. The vp3 codec that serves as the base of
-Theora was written by a company called <a href="http://www.on2.com">On2 Technologies</a>. Xiph.org will be
-responsible for all aspects of the development. On2 will provide both
-monetary and technical support to Xiph.org throughout the project. On2 is
-also providing the source code of their implementation of the VP3 codec as
-well as some of their video tools.
-</div>
-<br>
-<br>
-<a name="51"></a>
-<b>Q. Who designed this website?</b><br>
-<div class="txt">
-This website is based on a design called 'Nutrition,' available for public
-download from <a href="http://www.oswd.org/">Open Source Web Design</a>.
-The original author is known by the nickname of 'BrAInDeD-'.
-</div>
-<br>
-<br>
-<a name="52"></a>
-<b>Q. Who is the webmaster of this site?</b><br>
-<div class="txt">
- That would be <a href="mailto:manuel at xiph.org">Manuel Lora</a>, the greatest webmaster
-on the face of the planet.
-</div>
-<br>
-<br>
-<a name="53"></a>
-<b>Q. Who maintains The Glorious Theora FAQ?</b><br>
-<div class="txt">
- No one person at the moment. Send changes to the list if it needs them. It
-was originally written by Emmett Plant and Dan Miller. his FAQ wouldn't be
-here at all without the work of Slammin' Stan Seibert, to whom we are
-eternally grateful.
-</div>
-<br>
-<br>
-<a name="54"></a>
-<b>Q. When was this FAQ last updated?</b><br>
- July 3rd, 2004 by <a href="http://www.cse.iitb.ac.in/nilesh/">Nilesh Bansal</a>.
-<br>
-<br>
- <!-- Close Content -->
- </td>
- </tr>
- </table>
- <table border="0" cellspacing="0" cellpadding="3">
- <tr>
- <td class="bl" bgcolor="#777777" nowrap>
- <!-- Copyright (HINT: This is for decoration. You may change it to what you like.) -->
- This is <a
-href="http://www.opencontent.org">OpenContent</a>. Go nuts.
- <!-- Close Copyright -->
- </td>
- </tr>
- </table>
- </td>
- <td width="79" align="right" valign="bottom">
- <table border="0" cellspacing="0" cellpadding="0">
- <tr>
- <td> </td>
- <td align="right">
- <table border="0" cellspacing="0" cellpadding="0">
- <tr>
- <td bgcolor="#9898BA" width="25" height="25" class="brsmt"> </td>
- </tr>
- </table>
- </td>
- </tr>
- <tr>
- <td valign="bottom">
- <table border="0" cellspacing="0" cellpadding="0">
- <tr>
- <td bgcolor="#9898BA" width="25" height="25" class="brsmt"> </td>
- </tr>
- </table>
- </td>
- <td width="50" height="50" bgcolor="#444466" class="brsmt">
- </td>
- </tr>
- </table>
- </td>
- </tr>
- </table>
- </td>
- </tr>
- </table>
- </td>
- </tr>
-</table>
-</body>
-</html>
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 TRANSITIONAL//EN"
+ "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+<title>Theora.org :: FAQ</title>
+<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+<style type="text/css">
+ @import url(style.css);
+
+</style>
+</head>
+<body bgcolor="#666699" text="#000000" alink="#000000">
+<table width="500" border="0" cellspacing="0" cellpadding="2" align="center">
+ <tr>
+ <td bgcolor="#000000">
+ <table width="100%" border="0" cellspacing="0" cellpadding="0">
+ <tr>
+ <td bgcolor="#EEEEEE" align="left">
+ <table width="100%" border="0" cellspacing="0" cellpadding="0">
+ <tr>
+ <td valign="top" align="left">
+ <table border="0" cellspacing="0" cellpadding="0">
+ <tr>
+ <td width="50" height="50" bgcolor="#444466" class="tl">
+ </td>
+ <td align="right" valign="top">
+ <table border="0" cellspacing="0" cellpadding="0">
+ <tr>
+ <td bgcolor="#9898BA" width="25" height="25" class="tl"> </td>
+ </tr>
+ </table>
+ </td>
+ </tr>
+ <tr>
+ <td valign="bottom">
+ <table border="0" cellspacing="0" cellpadding="0">
+ <tr>
+ <td bgcolor="#9898BA" width="25" height="25" class="tl"> </td>
+ </tr>
+ </table>
+ </td>
+ <td valign="bottom"> </td>
+ </tr>
+ </table>
+ </td>
+ <td valign="top" align="right">
+ <table border="0" cellspacing="0" cellpadding="0">
+ <tr>
+ <td class="nutrition" align="right">
+ <!-- Title (HINT: Shorter is better.)
+-->Theora.org<!-- Close Title -->
+ </td>
+ </tr>
+ <tr>
+ <td align="right">
+ <table border="0" cellspacing="0" cellpadding="0">
+ <tr>
+ <!-- Menu (HINT: Each item is inside a <td>.)-->
+ <td class="menu"> <a
+href="http://www.Theora.org">Home</a></td>
+ <td class="menu"><a
+href="http://www.Theora.org/Theorafaq.html">FAQ</a></td>
+ <td class="menu"><a
+href="http://www.Theora.org/lists.html">Mailing Lists</a></td>
+ <td class="menu"><a
+href="http://www.Theora.org/svn.html">SVN</a></td>
+ <td class="menu"><a
+href="http://www.Theora.org/contact.html">Contact</a></td>
+ <td class="menu"><a
+href="http://www.xiph.org">Xiph.org</a></td>
+ <!-- Close Menu -->
+ </tr>
+ </table>
+ </td>
+ </tr>
+ </table>
+ </td>
+ </tr>
+ </table>
+ </td>
+ </tr>
+ <tr>
+ <td bgcolor="#EEEEEE">
+ <table width="100%" border="0" cellspacing="0" cellpadding="0">
+ <tr>
+ <td valign="top">
+ <table width="100%" border="0" cellspacing="0" cellpadding="10">
+ <tr>
+ <td>
+ <!-- Main Content -->
+<h1 class="headline">Theora FAQ</h1>
+<a href="#what"><b>What is Theora</b></a>
+<br>
+<ul>
+ <li><a href="#10">What is Theora?</a></li>
+ <li><a href="#11">Why use Theora?</a></li>
+ <li><a href="#12">What other video formats will Theora compete with?</a></li>
+ <li><a href="#13">What is Ogg? What is Vorbis? What is xiph.org?</a></li>
+ <li><a href="#14">What is the license for Theora?</a></li>
+ <li><a href="#15">Why the name 'Theora?'</a></li>
+</ul>
+<a href="#VP3"><b>Theora and VP3</b></a>
+<ul>
+ <li><a href="#20">Is the Theora bitstream identical to VP3? </a></li>
+ <li><a href="#21">What can Theora do that VP3 couldn't do? </a></li>
+ <li><a href="#22">How will I transition my old VP3 files to the new format?</a></li>
+ <li><a href="#23">Can I convert Ogg Theora files into VP3?</a></li>
+ <li><a href="#24">Isn't VP3 a patented technology? </a></li>
+ <li><a href="#25">What if Xiph.org and On2 decide to break off their agreement? </a></li>
+</ul>
+<br>
+<a href="#development"><b>Development</b></a>
+<ul>
+ <li><a href="#30">When will it all be finished? Can I use it right now?</a></li>
+ <li><a href="#31">What is an Alpha Release?</a></li>
+ <li><a href="#32">What is Tarkin? </a></li>
+ <li><a href="#33">How can I help with development?</a></li>
+ <li><a href="#34"> How will Ogg Theora interoperate with [insert your favorite media architecture]?</a></li>
+ <li><a href="#35">How can I donate to these amazing projects?</a></li>
+</ul>
+<br>
+<a href="#working"><b>Using Theora</b></a>
+<ul>
+ <li><a href="#40">What players currently support Theora?</a></li>
+ <li><a href="#41">How can I encode videos to Theora?</a></li>
+ <li><a href="#42">Is there any way to use Theora on Microsoft Windows at this point?</a></li>
+</ul>
+<br>
+<a href="#misc"><b>Misc and Credits</b></a>
+<ul>
+ <li><a href="#50">Who's in charge of Theora development?</a></li>
+ <li><a href="#51">Who designed this website? </a></li>
+ <li><a href="#52">Who is the webmaster of this site?</a></li>
+ <li><a href="#53">Who maintains The Glorious Theora FAQ?</a></li>
+ <li><a href="#54">When was this FAQ last updated?</a></li>
+</ul>
+<br>
+<a name="what"></a><b>What is Theora</b>
+<br>
+<br>
+<a name="10"></a>
+<b>Q. What is Theora?</b><br>
+<div class="txt">
+Theora is an <b>open</b> video codec being developed by the Xiph.org
+Foundation as part of their Ogg project (It is a project that aims to
+integrate On2's <a href="http://en.wikipedia.org/wiki/VP3">VP3</a>
+video codec, Ogg <a href="http://www.vorbis.com/">Vorbis</a> audio codec
+and Ogg multimedia container formats into a multimedia solution that can
+compete with <a href="http://en.wikipedia.org/wiki/MPEG-4">MPEG-4</a> format).
+<br> Theora is derived directly
+from On2's VP3 codec; currently the two are nearly identical, varying
+only in framing headers, but Theora will diverge and improve from
+the main VP3 development lineage as time progresses.
+</div>
+<br>
+<br>
+<a name="11"></a>
+<b>Q. Why use Theora?</b><br>
+<div class="txt">
+It's open and free. Do you need more reasons?
+</div>
+<br>
+<br>
+<a name="12"></a>
+<b>Q. What other video formats will Theora compete with?</b><br>
+<div class="txt">
+ Theora is targeted at competing with MPEG-4 (e.g., XviD and DivX),
+RealVideo, Windows Media Video, and similar lower-bitrate video
+compression schemes.
+</div>
+<br>
+<br>
+<a name="13"></a>
+<b>Q. What is Ogg? What is Vorbis? What is xiph.org?</b><br>
+<div class="txt">
+ <a href="http://www.vorbis.com/">Vorbis</a> is an audio codec,
+Theora is a video codec. Ogg is the transport layer that both are stored in,
+so a video file will be Theora-encoded data inside an Ogg file, while audio
+is normally Vorbis-encoded data inside an ogg file.
+<br>
+ The <a href="http://www.xiph.org/">Xiph.org</a> Foundation is a
+Delaware non-profit company devoted to producing, maintaining and
+supporting an open multimedia platform.
+</div>
+<br>
+<br>
+<a name="14"></a>
+<b>Q. What is the license for Theora?</b><br>
+<div class="txt">
+Theora (and all associated technologies released by the Xiph.org
+Foundation) is released to the public via a BSD-style license. It is
+completely free for commercial or noncommercial use. That means that
+commercial developers may independently write Theora software which is
+compatible with the specification for no charge and without restrictions of
+any kind.
+</div>
+<br>
+<br>
+<a name="15"></a>
+<b>Q. Why the name 'Theora?'</b><br>
+<div class="txt">
+Like other Xiph.org Foundation codec projects such as Vorbis or Tarkin,
+Theora is named after a fictional character. Theora Jones was the name of
+Edison Carter's 'controller' on the television series Max Headroom. She was
+played by Amanda Pays.
+</div>
+<br>
+<br>
+<a name="VP3"></a>
+<b>Theora and VP3 </b>
+<br>
+<br>
+<a name="20"></a>
+<b>Q. Is the Theora bitstream identical to VP3?</b><br>
+<div class="txt">
+ Yes and No. Theora is a superset of VP3, so VP3 streams (with minor
+syntactic modifications) can be made into Theora streams without
+recompression (but not vice versa).
+<br>
+ Theora will be almost entirely based upon the VP3 codec designed by On2.
+However, Theora video data will be delivered inside of the Ogg container
+format (with Vorbis for audio), so Ogg Theora files will not be the same as
+VP3 files. There also may be quite a few performance advantages to using
+Theora when 1.0 is complete; While our focus is integration, there will
+certainly be a lot of optimization involved, as well.
+</div>
+<br>
+<br>
+<a name="21"></a>
+<b>Q. What can Theora do that VP3 couldn't do?</b><br>
+<div class="txt">
+ The major change from VP3 to Theora is architectural. VP3, like most
+codecs of today, makes certain assumptions about the nature of the material
+it compresses. These assumptions take the form of fixed sets of numeric
+values, such as quantization matrices, which control how different
+frequency components of the signal are handled, and token frequency tables,
+which control the efficiency of post-transform lossless coding. In Theora,
+we have leveraged the intrinsic flexibility of the Ogg multimedia framework
+to allow the encoder to modify these values appropriately for the material.
+This simple, powerful approach has already been proven effective in Vorbis,
+and will allow for a longer cycle of encoder optimization without requiring
+client-side updates.
+</div>
+<br>
+<br>
+<a name="22"></a>
+<b>Q. How will I transition my old VP3 files to the new format?</b><br>
+<div class="txt">
+ Because Theora is a 'superset' of VP3, tools can easily be created that
+will allow VP3 files to be losslessly transcoded into Ogg Theora format
+with no loss in quality.
+</div>
+<br>
+<br>
+<a name="23"></a>
+<b>Q. Can I convert Ogg Theora files into VP3?</b><br>
+<div class="txt">
+ Why would you want to do something like that? Are you nuts?
+</div>
+<br>
+<br>
+<a name="24"></a>
+<b>Q. Isn't VP3 a patented technology?</b><br>
+<div class="txt">
+ Yes, some portions of the VP3 codec are covered by patents. However, the
+Xiph.org Foundation has negotiated an irrevocable free license to the VP3
+codec for any purpose imaginable on behalf of the public. It is legal to
+use VP3 in any way you see fit (unless, of course, you're doing something
+illegal with it in your particular jurisdiction). You are free to download
+VP3, use it free of charge, implement it in a for-sale product, implement
+it in a free product, make changes to the source and distribute those
+changes, or print the source code out and wallpaper your spare room with
+it.
+<br>
+For more information, check the VP3 Legal Terms on the SVN page
+</div>
+<br>
+<br>
+<a name="25"></a>
+<b>Q. What if Xiph.org and On2 decide to break off their agreement?</b><br>
+<div class="txt">
+ Because Theora is an Open Source project, the source code will continue to
+be available and development will continue. Users will still be protected
+from the On2 patents.
+</div>
+<br>
+<br>
+<a name="development"></a>
+<b>Development </b>
+<br>
+<br>
+<a name="30"></a>
+<b>Q. When will it all be finished? Can I use it right now?</b><br>
+<div class="txt">
+Theora alpha 3 is out and bitstream format is now frozen. So, files produced by
+the alpha 3 reference encoder will be supported by all future decoders. But, still it
+is not complete and many bugs are yet to be fixed.
+</div>
+<br>
+<br>
+<a name="31"></a>
+<b>Q. What is an Alpha Release?</b><br>
+<div class="txt">
+Typically when software is created at a software company, it goes through a number of stages
+before it's released out to the world. You've probably heard of 'beta-testing' before. That's
+when people take code that has been deemed 'not quite ready' and are testing it out so that
+the authors can fix bugs where necessary.
+<br>
+'Alpha' code is strictly for internal development only, which is to say, 'No one sees this code,
+it's not even close to being done yet.' At the Xiph.org Foundation, we release everything we do
+so that people can help us move the codebase forward by reporting bugs and submitting patches.
+So, even 'Alpha' code needs to get out to the world.
+<br>
+We encourage and depend on the open-source developer community to get
+involved early. We release Alpha builds to give these hearty souls a chance
+to see what's cooking, and perhaps to add some ingredients of their own. If
+you think you have the right stuff, please join the party at
+<a href="http://www.Theora.org/lists">www.Theora.org/lists</a>.
+</div>
+<br>
+<br>
+<a name="32"></a>
+<b>Q. What is Tarkin?</b><br>
+<div class="txt">
+Tarkin is essentially a proof-of-concept wavelet-based codec. Its
+experimental nature means it will not be ready for general use for some
+time. VP3 is a high-quality codec that can meet today's video needs now, so
+Xiph.org will be focusing its efforts on Theora for the near future.
+</div>
+<br>
+<br>
+<a name="33"></a>
+<b>Q. How can I help with development?</b><br>
+<div class="txt">
+Head on over to the <a href="http://www.Theora.org/svn.html">SVN</a>
+ page to grab the codebase, and hack away! Post your contributions online,
+ and tell us about it on the <a href="http://www.Theora.org/lists.html">Theora-dev
+</a> mailing list.
+</div>
+<br>
+<br>
+<a name="34"></a>
+<b>Q. How will Ogg Theora interoperate with [insert your favorite media architecture]?</b><br>
+<div class="txt">
+ As the Ogg Vorbis format has gained acceptance, components have become
+available to play Ogg files on practically all of the major media players.
+We expect a similar if not superior level of support for Ogg Theora.
+Developers wanted! (if you're interested, sign up for the
+Theora-codecs at xiph.org mailing list).
+</div>
+<br>
+<br>
+<a name="35"></a>
+<b>Q. How can I donate to these amazing projects?</b><br>
+<div class="txt">
+ Wow, thanks! You can find more information on donating to the Xiph.org
+Foundation by following <a href="http://www.xiph.org/ogg/vorbis/donate.html">
+this link</a>! Thanks in advance!
+</div>
+<br>
+<br>
+<a name="working"></a>
+<b>Using Theora </b>
+<br>
+<br>
+<a name="40"></a>
+<b>Q. What players currently support Theora?</b><br>
+<div class="txt">
+Major players like <a href="http://www.mplayerhq.hu/">mplayer</a>,
+<a href="http://www.xinehq.de/">xine</a>, <a
+href="http://www.helixcommunity.org">helix player</a> and <a
+href="http://www.videolan.org/">VideoLAN</a> supports Theora.
+Directshow <a href="http://www.illiminable.com/ogg/">filters</a>
+are also available for use on Windows platform.
+</div>
+<br>
+<br>
+<a name="41"></a>
+<b>Q. How can I encode videos to Theora?</b><br>
+<div class="txt">
+ Have a look at <a
+href="http://www.dogphilosophy.net/SECTION-Technical_Stuff/ogg-Theora-microhowto.html">
+ogg-Theora-microhowto</a> and <a href="http://www.annodex.net/anx_Theora.html">transcode
+</a>quickTime mov files to Theora files under Linux.
+</div>
+<br>
+<br>
+<a name="42"></a>
+<b>Q. Is there any way to use Theora on Microsoft Windows at this point?</b><br>
+<div class="txt">
+Yes, you can use your Theora files on windows using <a
+href="http://www.illiminable.com/ogg/">Directshow filters</a>. <a
+href="http://ffdshow.sourceforge.net/">FFdshow</a> also has support for Theora. You
+can also try <a href="http://www.videolan.org/">vlc</a>, realplayer <a
+href="https://helixcommunity.org/project/showfiles.php?group_id=7">
+Theora plugins</a> or <a href="http://www.mplayerhq.hu/">mplayer for windows</a>.
+</div>
+<br>
+<br>
+<a name="misc"></a>
+<b>Misc and Credits </b>
+<br>
+<br>
+<a name="50"></a>
+<b>Q. Who's in charge of Theora development?</b><br>
+<div class="txt">
+The Xiph.org Foundation is the primary developer of Theora, but this is
+mainly an integration issue. The VP3 codec that serves as the base of
+Theora was written by a company called <a href="http://www.on2.com">On2 Technologies</a>. Xiph.org will be
+responsible for all aspects of the development. On2 will provide both
+monetary and technical support to Xiph.org throughout the project. On2 is
+also providing the source code of their implementation of the VP3 codec as
+well as some of their video tools.
+</div>
+<br>
+<br>
+<a name="51"></a>
+<b>Q. Who designed this website?</b><br>
+<div class="txt">
+This website is based on a design called 'Nutrition,' available for public
+download from <a href="http://www.oswd.org/">Open Source Web Design</a>.
+The original author is known by the nickname of 'BrAInDeD-'.
+</div>
+<br>
+<br>
+<a name="52"></a>
+<b>Q. Who is the webmaster of this site?</b><br>
+<div class="txt">
+ That would be <a href="mailto:manuel at xiph.org">Manuel Lora</a>, the greatest webmaster
+on the face of the planet.
+</div>
+<br>
+<br>
+<a name="53"></a>
+<b>Q. Who maintains The Glorious Theora FAQ?</b><br>
+<div class="txt">
+ No one person at the moment. Send changes to the list if it needs them. It
+was originally written by Emmett Plant and Dan Miller. his FAQ wouldn't be
+here at all without the work of Slammin' Stan Seibert, to whom we are
+eternally grateful.
+</div>
+<br>
+<br>
+<a name="54"></a>
+<b>Q. When was this FAQ last updated?</b><br>
+ July 3rd, 2004 by <a href="http://www.cse.iitb.ac.in/nilesh/">Nilesh Bansal</a>.
+<br>
+<br>
+ <!-- Close Content -->
+ </td>
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+ </table>
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+ <tr>
+ <td class="bl" bgcolor="#777777" nowrap>
+ <!-- Copyright (HINT: This is for decoration. You may change it to what you like.) -->
+ This is <a
+href="http://www.opencontent.org">OpenContent</a>. Go nuts.
+ <!-- Close Copyright -->
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