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authorUoti Urpala <uau@glyph.nonexistent.invalid>2011-02-15 12:08:16 +0200
committerUoti Urpala <uau@glyph.nonexistent.invalid>2011-02-15 12:08:16 +0200
commit685bbb5734014ac6efece02d7df757fb4a942cbb (patch)
tree4fc8e140a2bebb64c3773d41ac4b8712f12baf10 /DOCS
parent0321f6ce3c9d3bf8ea8d1c5df3ba81a5844748bf (diff)
downloadmpv-685bbb5734014ac6efece02d7df757fb4a942cbb.tar.bz2
mpv-685bbb5734014ac6efece02d7df757fb4a942cbb.tar.xz
DOCS/xml/en: remove various outdated documentation
The XML documentation was badly outdated, with various obsolete, useless and and sometimes actively harmful advice. Delete a lot of the obsolete stuff, without spending much effort to replace it for now. In the FAQ section I removed some questions completely; in other cases I only removed the answer if I thought the entry might be worth keeping but the answer would need to be updated.
Diffstat (limited to 'DOCS')
-rw-r--r--DOCS/xml/en/bugreports.xml260
-rw-r--r--DOCS/xml/en/documentation.xml106
-rw-r--r--DOCS/xml/en/encoding-guide.xml5545
-rw-r--r--DOCS/xml/en/faq.xml647
-rw-r--r--DOCS/xml/en/install.xml413
-rw-r--r--DOCS/xml/en/mencoder.xml771
-rw-r--r--DOCS/xml/en/ports.xml833
-rw-r--r--DOCS/xml/en/usage.xml119
-rw-r--r--DOCS/xml/en/video.xml2301
9 files changed, 43 insertions, 10952 deletions
diff --git a/DOCS/xml/en/bugreports.xml b/DOCS/xml/en/bugreports.xml
index 786c2516ef..dbcffcb88a 100644
--- a/DOCS/xml/en/bugreports.xml
+++ b/DOCS/xml/en/bugreports.xml
@@ -41,13 +41,7 @@ send that one with another mail.
<title>How to fix bugs</title>
<para>
-If you feel have the necessary skills you are invited to have a go at fixing the
-bug yourself. Or maybe you already did that? Please read
-<ulink url="../../tech/patches.txt">this short document</ulink> to find out how
-to get your code included in <application>MPlayer</application>. The people on
-the
-<ulink url="http://lists.mplayerhq.hu/mailman/listinfo/mplayer-dev-eng">MPlayer-dev-eng</ulink>
-mailing list will assist you if you have questions.
+OUTDATED CONTENT REMOVED
</para>
</sect1>
@@ -59,84 +53,7 @@ mailing list will assist you if you have questions.
<title>How to do regression testing using Subversion</title>
<para>
-A problem that can happen sometimes is 'it used to work before, now it
-doesn't anymore...'.
-Here is a step by step procedure to try to pinpoint when the problem
-occurred. This is <emphasis role="bold">not</emphasis> for casual users.
-</para>
-
-<para>
-First, you'd need to fetch MPlayer's source tree from Subversion.
-Instructions can be found in the
-<ulink url="http://www.mplayerhq.hu/design7/dload.html#svn">Subversion section of the download page</ulink>.
-</para>
-
-<para>
-You will have now in the mplayer/ directory an image of the Subversion tree, on
-the client side.
-Now update this image to the date you want:
-<screen>
-cd mplayer/
-svn update -r {"2004-08-23"}
-</screen>
-The date format is YYYY-MM-DD HH:MM:SS.
-Using this date format ensure that you will be able to extract patches
-according to the date at which they were committed, as in the
-<ulink url="http://lists.mplayerhq.hu/pipermail/mplayer-cvslog/">MPlayer-cvslog archive</ulink>.
-</para>
-
-<para>
-Now proceed as for a normal update:
-<screen>
-./configure
-make
-</screen>
-</para>
-
-<para>
-If any non-programmer reads this, the fastest method to get at the point
-where the problem occurred is to use a binary search &mdash; that is,
-search the date of the breakage by repeatedly dividing the search
-interval in half.
-For example, if the problem occurred in 2003, start at mid-year, then ask
-"Is the problem already here?".
-If yes, go back to the first of April; if not, go to the first of October,
-and so on.
-</para>
-
-<para>
-If you have lot of free hard disk space (a full compile currently takes
-100 MB, and around 300-350 MB if debugging symbols are enabled), copy the
-oldest known working version before updating it; this will save time if
-you need to go back.
-(It is usually necessary to run 'make distclean' before recompiling an
-earlier version, so if you do not make a backup copy of your original
-source tree, you will have to recompile everything in it when you come
-back to the present.)
-Alternatively you may use <ulink url="http://ccache.samba.org/">ccache</ulink>
-to speed up compilation.
-</para>
-
-<para>
-When you have found the day where the problem happened, continue the search
-using the mplayer-cvslog archive (sorted by date) and a more precise svn
-update including hour, minute and second:
-<screen>
-svn update -r {"2004-08-23 15:17:25"}
-</screen>
-This will allow you to easily find the exact patch that did it.
-</para>
-
-<para>
-If you find the patch that is the cause of the problem, you have almost won;
-report about it to the
-<ulink url="http://bugzilla.mplayerhq.hu/">MPlayer Bugzilla</ulink> or
-subscribe to
-<ulink url="http://lists.mplayerhq.hu/mailman/listinfo/mplayer-users">MPlayer-users</ulink>
-and post it there.
-There is a chance that the author will jump in to suggest a fix.
-You may also look hard at the patch until it is coerced to reveal where
-the bug is :-).
+OUTDATED CONTENT REMOVED
</para>
</sect1>
@@ -148,49 +65,7 @@ the bug is :-).
<title>How to report bugs</title>
<para>
-First of all please try the latest Subversion version of
-<application>MPlayer</application>
-as your bug might already be fixed there. Development moves extremely fast,
-most problems in official releases are reported within days or even hours,
-so please use <emphasis role="bold">only Subversion</emphasis> to report bugs.
-This includes binary packages of <application>MPlayer</application>.
-Subversion instructions can be found at the bottom of
-<ulink url="http://www.mplayerhq.hu/dload.html">this page</ulink> or in
-the README. If this did not help please refer to the rest of the documentation.
-If your problem is not known or not solvable by our instructions,
-then please report the bug.
-</para>
-
-<para>
-Please do not send bug reports privately to individual developers. This is
-community work and thus there might be several people interested in it.
-Sometimes other users already experienced your troubles and know how to
-circumvent a problem even if it is a bug in <application>MPlayer</application>
-code.
-</para>
-
-<para>
-Please describe your problem in as much detail as possible. Do a little
-detective work to narrow down the circumstances under which the problem occurs.
-Does the bug only show up in certain situations? Is it specific to certain
-files or file types? Does it occur with only one codec or is it codec
-independent? Can you reproduce it with all output drivers? The more information
-you provide the better are our chances at fixing your problem. Please do not
-forget to also include the valuable information requested below, we will be
-unable to properly diagnose your problem otherwise.
-</para>
-
-<para>
-An excellent and well written guide to asking questions in public forums is
-<ulink url="http://www.catb.org/~esr/faqs/smart-questions.html">How To Ask Questions The Smart Way</ulink>
-by <ulink url="http://www.catb.org/~esr/">Eric S. Raymond</ulink>.
-There is another called
-<ulink url="http://www.chiark.greenend.org.uk/~sgtatham/bugs.html">How to Report Bugs Effectively</ulink>
-by <ulink url="http://www.chiark.greenend.org.uk/~sgtatham/">Simon Tatham</ulink>.
-If you follow these guidelines you should be able to get help. But please
-understand that we all follow the mailing lists voluntarily in our free time. We
-are very busy and cannot guarantee that you will get a solution for your problem
-or even an answer.
+OUTDATED CONTENT REMOVED
</para>
</sect1>
@@ -202,15 +77,7 @@ or even an answer.
<title>Where to report bugs</title>
<para>
-Subscribe to the MPlayer-users mailing list:
-<ulink url="http://lists.mplayerhq.hu/mailman/listinfo/mplayer-users"/>
-and send your bug report to
-<ulink url="mailto:mplayer-users@mplayerhq.hu"/> where you can discuss it.
-</para>
-
-<para>
-If you prefer, you can use our brand-new
-<ulink url="http://bugzilla.mplayerhq.hu/">Bugzilla</ulink> instead.
+OUTDATED CONTENT REMOVED
</para>
<para>
@@ -235,12 +102,7 @@ to subscribe to actually receive your answer.
<title>What to report</title>
<para>
-You may need to include log, configuration or sample files in your bug report.
-If some of them are quite big then it is better to upload them to our
-<ulink url="ftp://upload.mplayerhq.hu/MPlayer/incoming/">FTP server</ulink> in a
-compressed format (gzip and bzip2 preferred) and include only the path and file
-name in your bug report. Our mailing lists have a message size limit of 80k, if
-you have something bigger you have to compress or upload it.
+OUTDATED CONTENT REMOVED
</para>
<!-- ********** -->
@@ -249,57 +111,7 @@ you have something bigger you have to compress or upload it.
<title>System Information</title>
<para>
-<itemizedlist>
-<listitem><para>
- Your Linux distribution or operating system and version e.g.:
- <itemizedlist>
- <listitem><para>Red Hat 7.1</para></listitem>
- <listitem><para>Slackware 7.0 + devel packs from 7.1 ...</para></listitem>
- </itemizedlist>
-</para></listitem>
-<listitem><para>
- kernel version:
- <screen>uname -a</screen>
-</para></listitem>
-<listitem><para>
- libc version:
- <screen>ls -l /lib/libc[.-]*</screen>
-</para></listitem>
-<listitem><para>
- gcc and ld versions:
- <screen>
-gcc -v
-ld -v<!--
- --></screen>
-</para></listitem>
-<listitem><para>
- binutils version:
- <screen>as --version</screen>
-</para></listitem>
-<listitem><para>
- If you have problems with fullscreen mode:
- <itemizedlist>
- <listitem><para>Window manager type and version</para></listitem>
- </itemizedlist>
-</para></listitem>
-<listitem><para>
- If you have problems with XVIDIX:
- <itemizedlist>
- <listitem><para>
- X colour depth:
- <screen>xdpyinfo | grep "depth of root"</screen>
- </para></listitem>
- </itemizedlist>
-</para></listitem>
-<listitem><para>
- If only the GUI is buggy:
- <itemizedlist>
- <listitem><para>GTK version</para></listitem>
- <listitem><para>GLIB version</para></listitem>
- <listitem><para>GUI situation in which the bug occurs</para></listitem>
- </itemizedlist>
-</para></listitem>
-</itemizedlist>
+OUTDATED CONTENT REMOVED
</para>
</sect2>
@@ -309,39 +121,7 @@ ld -v<!--
<title>Hardware and drivers</title>
<para>
-<itemizedlist>
-<listitem><para>
- CPU info (this works on Linux only):
- <screen>cat /proc/cpuinfo</screen>
-</para></listitem>
-<listitem><para>
- Video card manufacturer and model, e.g.:
- <itemizedlist>
- <listitem><para>ASUS V3800U chip: nVidia TNT2 Ultra pro 32MB SDRAM</para></listitem>
- <listitem><para>Matrox G400 DH 32MB SGRAM</para></listitem>
- </itemizedlist>
-</para></listitem>
-<listitem><para>
- Video driver type &amp; version, e.g.:
- <itemizedlist>
- <listitem><para>X built-in driver</para></listitem>
- <listitem><para>nVidia 0.9.623</para></listitem>
- <listitem><para>Utah-GLX CVS 2001-02-17</para></listitem>
- <listitem><para>DRI from X 4.0.3</para></listitem>
- </itemizedlist>
-</para></listitem>
-<listitem><para>
- Sound card type &amp; driver, e.g.:
- <itemizedlist>
- <listitem><para>Creative SBLive! Gold with OSS driver from oss.creative.com</para></listitem>
- <listitem><para>Creative SB16 with kernel OSS drivers</para></listitem>
- <listitem><para>GUS PnP with ALSA OSS emulation</para></listitem>
- </itemizedlist>
-</para></listitem>
-<listitem><para>
- If in doubt include <command>lspci -vv</command> output on Linux systems.
-</para></listitem>
-</itemizedlist>
+OUTDATED CONTENT REMOVED
</para>
</sect2>
@@ -472,30 +252,4 @@ gdb mplayer --core=core -batch --command=command_file &gt; mplayer.bug
</sect2>
</sect1>
-
-<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
-
-
-<sect1 id="bugreports_advusers">
-<title>I know what I am doing...</title>
-
-<para>
-If you created a proper bug report following the steps above and you are
-confident it is a bug in <application>MPlayer</application>, not a compiler
-problem or broken file, you have already read the documentation and you could
-not find a solution, your sound drivers are OK, then you might want to
-subscribe to the MPlayer-advusers list and send your bug report there to get
-a better and faster answer.
-</para>
-
-<para>
-Please be advised that if you post newbie questions or questions answered in the
-manual there, you will be ignored or flamed instead of getting an appropriate
-answer. So do not flame us and subscribe to -advusers only if you really know
-what you are doing and feel like being an advanced
-<application>MPlayer</application> user or developer. If you meet these
-criteria it should not be difficult to find out how to subscribe...
-</para>
-</sect1>
-
</appendix>
diff --git a/DOCS/xml/en/documentation.xml b/DOCS/xml/en/documentation.xml
index 8d4a5e38a4..2d6e16c4c2 100644
--- a/DOCS/xml/en/documentation.xml
+++ b/DOCS/xml/en/documentation.xml
@@ -3,7 +3,7 @@
<bookinfo id="toc">
<title><application>MPlayer</application> - The Movie Player</title>
-<subtitle><ulink url="http://www.mplayerhq.hu"></ulink></subtitle>
+<subtitle><ulink url="http://www.mplayer2.org/"></ulink></subtitle>
<date>March 24, 2003</date>
<copyright>
<year>2000</year>
@@ -17,6 +17,7 @@
<year>2008</year>
<year>2009</year>
<year>2010</year>
+ <year>2011</year>
<holder>MPlayer team</holder>
</copyright>
<legalnotice>
@@ -45,116 +46,17 @@ If you are a first-time installer: be sure to read everything from here to
the end of the Installation section, and follow the links you will find. If
you have any other questions, return to the <link linkend="toc">Table of
Contents</link> and search for the topic, read the <xref linkend="faq"/>,
-or try grepping through the files. Most questions should be answered somewhere
-here and the rest has probably already been asked on our
-<ulink url="http://www.mplayerhq.hu/design7/mailing_lists.html">mailing lists</ulink>.
-Check the
-<ulink url="https://lists.mplayerhq.hu/mailman/listinfo">archives</ulink>, there
-is a lot of valuable information to be found there.
+or try grepping through the files.
</para>
</preface>
<chapter id="intro">
<title>Introduction</title>
-
-<para>
-<application>MPlayer</application> is a movie player for Linux (runs on
-many other Unices, and non-x86 CPUs, see <xref linkend="ports"/>).
-It plays most MPEG, VOB, AVI, Ogg/OGM, VIVO, ASF/WMA/WMV, QT/MOV/MP4, FLI, RM,
-NuppelVideo, yuv4mpeg, FILM, RoQ, PVA, Matroska files, supported by
-many native, XAnim, RealPlayer, and Win32 DLL codecs. You can watch
-Video CD, SVCD, DVD, 3ivx, RealMedia, Sorenson, Theora,
-and MPEG-4 (DivX) movies, too. Another big
-feature of <application>MPlayer</application> is the wide range of
-supported output drivers. It works with X11, Xv, DGA, OpenGL, SVGAlib,
-fbdev, AAlib, libcaca, DirectFB, but you can use GGI and SDL (and this way all
-their drivers) and some low level card-specific drivers (for Matrox, 3Dfx and
-Radeon, Mach64, Permedia3) too! Most of them support software or hardware
-scaling, so you can enjoy movies in fullscreen.
-<application>MPlayer</application> supports displaying through some
-hardware MPEG decoder boards, such as the <link linkend="dvb">DVB</link> and
-<link linkend="dxr3">DXR3/Hollywood+</link>. And what about the nice big
-antialiased shaded subtitles (14 supported types)
-with European/ISO 8859-1,2 (Hungarian, English, Czech, etc), Cyrillic, Korean
-fonts, and the onscreen display (OSD)?
-</para>
-
+OUTDATED CONTENT REMOVED
<para>
-The player is rock solid playing damaged MPEG files (useful for some VCDs),
-and it plays bad AVI files which are unplayable with the famous
-<application>Windows Media Player</application>.
-Even AVI files without index chunk are playable, and you can
-temporarily rebuild their indexes with the <option>-idx</option> option, or
-permanently with <application>MEncoder</application>, thus enabling
-seeking! As you see, stability and quality are the most important things,
-but the speed is also amazing. There is also a powerful filter system for
-video and audio manipulation.
</para>
-<para>
-<application>MEncoder</application> (<application>MPlayer</application>'s Movie
-Encoder) is a simple movie encoder, designed to encode
-<application>MPlayer</application>-playable movies
-AVI/ASF/OGG/DVD/VCD/VOB/MPG/MOV/VIV/FLI/RM/NUV/NET/PVA
-to other <application>MPlayer</application>-playable formats (see below).
-It can encode with various codecs, like MPEG-4 (DivX4)
-(one or two passes), <systemitem class="library">libavcodec</systemitem>,
-PCM/MP3/VBR MP3 audio.
-</para>
-
-<itemizedlist>
-<title><application>MEncoder</application> features</title>
-<listitem><para>
- Encoding from the wide range of file formats and decoders of
- <application>MPlayer</application>
-</para></listitem>
-<listitem><para>
- Encoding to all the codecs of FFmpeg's
- <systemitem class="library">libavcodec</systemitem>
-</para></listitem>
-<listitem><para>
- Video encoding from V4L compatible TV tuners
-</para></listitem>
-<listitem><para>
- Encoding/multiplexing to interleaved AVI files with proper index
-</para></listitem>
-<listitem><para>
- Creating files from external audio stream
-</para></listitem>
-<listitem><para>
- 1, 2 or 3 pass encoding
-</para></listitem>
-<listitem><para>
- VBR MP3 audio
-</para></listitem>
-<listitem><para>
- PCM audio
-</para></listitem>
-<listitem><para>
- Stream copying
-</para></listitem>
-<listitem><para>
- Input A/V synchronizing (pts-based, can be disabled with
- <option>-mc 0</option> option)
-</para></listitem>
-<listitem><para>
- fps correction with <option>-ofps</option> option (useful when encoding
- 30000/1001 fps VOB to 24000/1001 fps AVI)
-</para></listitem>
-<listitem><para>
- Using our very powerful filter system (crop, expand, flip, postprocess,
- rotate, scale, RGB/YUV conversion)
-</para></listitem>
-<listitem><para>
- Can encode DVD/VOBsub and text subtitles
- into the output file
-</para></listitem>
-<listitem><para>
- Can rip DVD subtitles to VOBsub format
-</para></listitem>
-</itemizedlist>
-
<!-- FIXME: the license should be in bookinfo -->
<para>
<application>MPlayer</application> and <application>MEncoder</application>
diff --git a/DOCS/xml/en/encoding-guide.xml b/DOCS/xml/en/encoding-guide.xml
index 9309df9df7..d458f31b1c 100644
--- a/DOCS/xml/en/encoding-guide.xml
+++ b/DOCS/xml/en/encoding-guide.xml
@@ -3,5550 +3,7 @@
<chapter id="encoding-guide">
<title>Encoding with <application>MEncoder</application></title>
-<sect1 id="menc-feat-dvd-mpeg4">
-<title>Making a high quality MPEG-4 ("DivX")
- rip of a DVD movie</title>
-
-<para>
-One frequently asked question is "How do I make the highest quality rip
-for a given size?". Another question is "How do I make the highest
-quality DVD rip possible? I do not care about file size, I just want the best
-quality."
-</para>
-
-<para>
-The latter question is perhaps at least somewhat wrongly posed. After all, if
-you do not care about file size, why not simply copy the entire MPEG-2 video
-stream from the the DVD? Sure, your AVI will end up being 5GB, give
-or take, but if you want the best quality and do not care about size,
-this is certainly your best option.
-</para>
-
-<para>
-In fact, the reason you want to transcode a DVD into MPEG-4 is
-specifically because you <emphasis role="bold">do</emphasis> care about
-file size.
-</para>
-
-<para>
-It is difficult to offer a cookbook recipe on how to create a very high
-quality DVD rip. There are several factors to consider, and you should
-understand these details or else you are likely to end up disappointed
-with your results. Below we will investigate some of these issues, and
-then have a look at an example. We assume you are using
-<systemitem class="library">libavcodec</systemitem> to encode the video,
-although the theory applies to other codecs as well.
-</para>
-
-<para>
-If this seems to be too much for you, you should probably use one of the
-many fine frontends that are listed in the
-<ulink url="http://www.mplayerhq.hu/design7/projects.html#mencoder_frontends">MEncoder section</ulink>
-of our related projects page.
-That way, you should be able to achieve high quality rips without too much
-thinking, because most of those tools are designed to take clever decisions
-for you.
-</para>
-
-<!-- ********** -->
-
-<sect2 id="menc-feat-dvd-mpeg4-preparing-encode">
-<title>Preparing to encode: Identifying source material and framerate</title>
-
-<para>
-Before you even think about encoding a movie, you need to take
-several preliminary steps.
-</para>
-
-<para>
-The first and most important step before you encode should be
-determining what type of content you are dealing with.
-If your source material comes from DVD or broadcast/cable/satellite
-TV, it will be stored in one of two formats: NTSC for North
-America and Japan, PAL for Europe, etc.
-It is important to realize, however, that this is just the formatting for
-presentation on a television, and often does
-<emphasis role="bold">not</emphasis> correspond to the
-original format of the movie.
-Experience shows that NTSC material is a lot more difficult to encode,
-because there more elements to identify in the source.
-In order to produce a suitable encode, you need to know the original
-format.
-Failure to take this into account will result in various flaws in your
-encode, including ugly combing (interlacing) artifacts and duplicated
-or even lost frames.
-Besides being ugly, the artifacts also harm coding efficiency:
-You will get worse quality per unit bitrate.
-</para>
-
-
-<sect3 id="menc-feat-dvd-mpeg4-preparing-encode-fps">
-<title>Identifying source framerate</title>
-
-<para>
-Here is a list of common types of source material, where you are
-likely to find them, and their properties:
-</para>
-
-<itemizedlist>
-<listitem><para>
- <emphasis role="bold">Standard Film</emphasis>: Produced for
- theatrical display at 24fps.
-</para></listitem>
-<listitem><para>
- <emphasis role="bold">PAL video</emphasis>: Recorded with a PAL
- video camera at 50 fields per second.
- A field consists of just the odd- or even-numbered lines of a
- frame.
- Television was designed to refresh these in alternation as a
- cheap form of analog compression.
- The human eye supposedly compensates for this, but once you
- understand interlacing you will learn to see it on TV too and
- never enjoy TV again.
- Two fields do <emphasis role="bold">not</emphasis> make a
- complete frame, because they are captured 1/50 of a second apart
- in time, and thus they do not line up unless there is no motion.
-</para></listitem>
-<listitem><para>
- <emphasis role="bold">NTSC Video</emphasis>: Recorded with an
- NTSC video camera at 60000/1001 fields per second, or 60 fields per
- second in the pre-color era.
- Otherwise similar to PAL.
-</para></listitem>
-<listitem><para>
- <emphasis role="bold">Animation</emphasis>: Usually drawn at
- 24fps, but also comes in mixed-framerate varieties.
-</para></listitem>
-<listitem><para>
- <emphasis role="bold">Computer Graphics (CG)</emphasis>: Can be
- any framerate, but some are more common than others; 24 and
- 30 frames per second are typical for NTSC, and 25fps is typical
- for PAL.
-</para></listitem>
-<listitem><para>
- <emphasis role="bold">Old Film</emphasis>: Various lower
- framerates.
-</para></listitem>
-</itemizedlist>
-</sect3>
-
-
-<sect3 id="menc-feat-dvd-mpeg4-preparing-encode-material">
-<title>Identifying source material</title>
-
-<para>
-Movies consisting of frames are referred to as progressive,
-while those consisting of independent fields are called
-either interlaced or video - though this latter term is
-ambiguous.
-</para>
-
-<para>
-To further complicate matters, some movies will be a mix of
-several of the above.
-</para>
-
-<para>
-The most important distinction to make between all of these
-formats is that some are frame-based, while others are
-field-based.
-<emphasis role="bold">Whenever</emphasis> a movie is prepared
-for display on television (including DVD), it is converted to a
-field-based format.
-The various methods by which this can be done are collectively
-referred to as "telecine", of which the infamous NTSC
-"3:2 pulldown" is one variety.
-Unless the original material was also field-based (and the same
-fieldrate), you are getting the movie in a format other than the
-original.
-</para>
-
-<itemizedlist>
-<title>There are several common types of pulldown:</title>
-<listitem><para>
- <emphasis role="bold">PAL 2:2 pulldown</emphasis>: The nicest of
- them all.
- Each frame is shown for the duration of two fields, by extracting the
- even and odd lines and showing them in alternation.
- If the original material is 24fps, this process speeds up the
- movie by 4%.
-</para></listitem>
-<listitem><para>
- <emphasis role="bold">PAL 2:2:2:2:2:2:2:2:2:2:2:3 pulldown</emphasis>:
- Every 12th frame is shown for the duration of three fields, instead of
- just two.
- This avoids the 4% speedup issue, but makes the process much
- more difficult to reverse.
- It is usually seen in musical productions where adjusting the
- speed by 4% would seriously damage the musical score.
-</para></listitem>
-<listitem><para>
- <emphasis role="bold">NTSC 3:2 telecine</emphasis>: Frames are
- shown alternately for the duration of 3 fields or 2 fields.
- This gives a fieldrate 2.5 times the original framerate.
- The result is also slowed down very slightly from 60 fields per
- second to 60000/1001 fields per second to maintain NTSC fieldrate.
-</para></listitem>
-<listitem><para>
- <emphasis role="bold">NTSC 2:2 pulldown</emphasis>: Used for
- showing 30fps material on NTSC.
- Nice, just like 2:2 PAL pulldown.
-</para></listitem>
-</itemizedlist>
-
-<para>
-There are also methods for converting between NTSC and PAL video,
-but such topics are beyond the scope of this guide.
-If you encounter such a movie and want to encode it, your best
-bet is to find a copy in the original format.
-Conversion between these two formats is highly destructive and
-cannot be reversed cleanly, so your encode will greatly suffer
-if it is made from a converted source.
-</para>
-
-<para>
-When video is stored on DVD, consecutive pairs of fields are
-grouped as a frame, even though they are not intended to be shown
-at the same moment in time.
-The MPEG-2 standard used on DVD and digital TV provides a
-way both to encode the original progressive frames and to store
-the number of fields for which a frame should be shown in the
-header of that frame.
-If this method has been used, the movie will often be described
-as "soft-telecined", since the process only directs the
-DVD player to apply pulldown to the movie rather than altering
-the movie itself.
-This case is highly preferable since it can easily be reversed
-(actually ignored) by the encoder, and since it preserves maximal
-quality.
-However, many DVD and broadcast production studios do not use
-proper encoding techniques but instead produce movies with
-"hard telecine", where fields are actually duplicated in the
-encoded MPEG-2.
-</para>
-
-<para>
-The procedures for dealing with these cases will be covered
-<link linkend="menc-feat-telecine">later in this guide</link>.
-For now, we leave you with some guides to identifying which type
-of material you are dealing with:
-</para>
-
-<itemizedlist>
-<title>NTSC regions:</title>
-<listitem><para>
- If <application>MPlayer</application> prints that the framerate
- has changed to 24000/1001 when watching your movie, and never changes
- back, it is almost certainly progressive content that has been
- "soft telecined".
-</para></listitem>
-<listitem><para>
- If <application>MPlayer</application> shows the framerate
- switching back and forth between 24000/1001 and 30000/1001, and you see
- "combing" at times, then there are several possibilities.
- The 24000/1001 fps segments are almost certainly progressive
- content, "soft telecined", but the 30000/1001 fps parts could be
- either hard-telecined 24000/1001 fps content or 60000/1001 fields per second
- NTSC video.
- Use the same guidelines as the following two cases to determine which.
-</para></listitem>
-<listitem><para>
- If <application>MPlayer</application> never shows the framerate
- changing, and every single frame with motion appears combed, your
- movie is NTSC video at 60000/1001 fields per second.
-</para></listitem>
-<listitem><para>
- If <application>MPlayer</application> never shows the framerate
- changing, and two frames out of every five appear combed, your
- movie is "hard telecined" 24000/1001fps content.
-</para></listitem>
-</itemizedlist>
-
-<itemizedlist>
-<title>PAL regions:</title>
-<listitem><para>
- If you never see any combing, your movie is 2:2 pulldown.
-</para></listitem>
-<listitem><para>
- If you see combing alternating in and out every half second,
- then your movie is 2:2:2:2:2:2:2:2:2:2:2:3 pulldown.
-</para></listitem>
-<listitem><para>
- If you always see combing during motion, then your movie is PAL
- video at 50 fields per second.
-</para></listitem>
-</itemizedlist>
-
-<note><title>Hint:</title>
-<para>
- <application>MPlayer</application> can slow down movie playback
- with the -speed option or play it frame-by-frame.
- Try using <option>-speed</option> 0.2 to watch the movie very
- slowly or press the "<keycap>.</keycap>" key repeatedly to play one frame at
- a time and identify the pattern, if you cannot see it at full speed.
-</para>
-</note>
-</sect3>
-</sect2>
-
-<!-- ********** -->
-
-<sect2 id="menc-feat-dvd-mpeg4-2pass">
-<title>Constant quantizer vs. multipass</title>
-
-<para>
-It is possible to encode your movie at a wide range of qualities.
-With modern video encoders and a bit of pre-codec compression
-(downscaling and denoising), it is possible to achieve very good
-quality at 700 MB, for a 90-110 minute widescreen movie.
-Furthermore, all but the longest movies can be encoded with near-perfect
-quality at 1400 MB.
-</para>
-
-<para>
-There are three approaches to encoding the video: constant bitrate
-(CBR), constant quantizer, and multipass (ABR, or average bitrate).
-</para>
-
-<para>
-The complexity of the frames of a movie, and thus the number of bits
-required to compress them, can vary greatly from one scene to another.
-Modern video encoders can adjust to these needs as they go and vary
-the bitrate.
-In simple modes such as CBR, however, the encoders do not know the
-bitrate needs of future scenes and so cannot exceed the requested
-average bitrate for long stretches of time.
-More advanced modes, such as multipass encode, can take into account
-the statistics from previous passes; this fixes the problem mentioned
-above.
-</para>
-
-<note><title>Note:</title>
-<para>
-Most codecs which support ABR encode only support two pass encode
-while some others such as <systemitem class="library">x264</systemitem>,
-<systemitem class="library">Xvid</systemitem>
-and <systemitem class="library">libavcodec</systemitem> support
-multipass, which slightly improves quality at each pass,
-yet this improvement is no longer measurable nor noticeable after the
-4th or so pass.
-Therefore, in this section, two pass and multipass will be used
-interchangeably.
-</para>
-</note>
-
-<para>
-In each of these modes, the video codec (such as
-<systemitem class="library">libavcodec</systemitem>)
-breaks the video frame into 16x16 pixel macroblocks and then applies a
-quantizer to each macroblock. The lower the quantizer, the better the
-quality and higher the bitrate.
-The method the movie encoder uses to determine
-which quantizer to use for a given macroblock varies and is highly
-tunable. (This is an extreme over-simplification of the actual
-process, but the basic concept is useful to understand.)
-</para>
-
-<para>
-When you specify a constant bitrate, the video codec will encode the video,
-discarding
-detail as much as necessary and as little as possible in order to remain
-lower than the given bitrate. If you truly do not care about file size,
-you could as well use CBR and specify a bitrate of infinity. (In
-practice, this means a value high enough so that it poses no limit, like
-10000Kbit.) With no real restriction on bitrate, the result is that
-the codec will use the lowest
-possible quantizer for each macroblock (as specified by
-<option>vqmin</option> for