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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@6173 b3059339-0415-0410-9bf9-f77b7e298cf2
406 lines
17 KiB
HTML
406 lines
17 KiB
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{font-family : Verdana, Arial, Helvetica, sans-serif;
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font-size : 14px;}
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</HEAD>
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<BODY BGCOLOR=WHITE>
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<FONT CLASS="text">
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<P><B><A NAME=2.2>2.2. Supported codecs</A></B></P>
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<P><B><A NAME=2.2.1>2.2.1. Video codecs</A></B></P>
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<P>See <A HREF="http://www.mplayerhq.hu/DOCS/codecs-status.html">http://www.mplayerhq.hu/DOCS/codecs-status.html</A> for the complete,
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daily generated list!!!</P>
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<P>The most important ones above all:</P>
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<UL>
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<LI>MPEG1 (VCD) and MPEG2 (DVD) video</LI>
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<LI>DivX ;-), OpenDivX (DivX4), DivX 5.01, 3ivX, M$ MPEG4 v2 and other MPEG4 variants</LI>
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<LI>Windows Media Video 7 (WMV1) and 8 (WMV2) used in .wmv files</LI>
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<LI>Cinepak and Intel Indeo codecs (3.1,3.2,4.1,5.0)</LI>
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<LI>MJPEG, AVID, VCR2, ASV2 and other hardware formats</LI>
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<LI>VIVO 1.0, 2.0, I263 and other h263(+) variants</LI>
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<LI>FLI/FLC</LI>
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<LI>RealVideo 1.0</LI>
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<LI>Various old simple RLE-like formats</LI>
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</UL>
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<P>If you have a Win32 codec not listed here which is not supported yet, please read the
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<A HREF="#2.2.3">codec importing HOWTO</A> and help us add support
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for it!</P>
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<P><B><A NAME=2.2.1.1>2.2.1.1. DivX4/DivX5</A></B></P>
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<P>This section contains information about the DivX4 codec of
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<A HREF="http://www.projectmayo.com">Project Mayo</A>. Their first available alpha version was OpenDivX 4.0
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alpha 47 and 48. Support for this was/is included in <B>MPlayer</B>, and built by
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default. Earlier, we used its postprocessing code to optionally enhance visual
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quality of MPEG1/2 movies. Now we use our own.</P>
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<P>The new generation of this codec is called DivX4Linux and can even decode
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movies made with the infamous DivX codec! In addition it is much faster than the
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native Win32 DivX DLLs but slower than libavcodec.
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Hence its usage as a decoder is <B>DISCOURAGED</B>. However, it is useful for
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encoding. One disadvantage of this codec is that it is currently closed source.</P>
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<P>The codec can be downloaded from one of the following URLs:</P>
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<P> <A HREF="http://avifile.sourceforge.net">http://avifile.sourceforge.net</A><BR>
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<A HREF="http://divx.com">http://divx.com</A></P>
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<P>Unpack it, and run <CODE>./install.sh</CODE> as root.</P>
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<P>Note: Do NOT forget adding <CODE>/usr/local/lib</CODE> to your
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<CODE>/etc/ld.so.conf</CODE> and running <CODE>ldconfig</CODE>!</P>
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<P><B>MPlayer</B> autodetects DivX4/DivX5 if it is properly installed, just
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compile as usual. If it does not detect it, you did not install or configure
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it correctly.</P>
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<P>DivX4Linux conflicts with the old OpenDivX because their APIs are similar but
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incompatible. Therefore you can only have one of them compiled into <B>MPlayer</B>
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at a time.</P>
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<P>DivX4Linux offers an OpenDivX compatibility mode such that you may choose from
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the following options when using this codec:</P>
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<TABLE BORDER=0>
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<TR><TD> </TD><TD VALIGN=top><CODE>-vc odivx</CODE></TD><TD> </TD>
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<TD><FONT CLASS="text">Uses the codec in OpenDivX fashion. In this case it
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produces YV12 images in its own buffer, and <B>MPlayer</B> does colorspace
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conversion via libvo. (<B>RECOMMENDED!</B>)</FONT></TD></TR>
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<TR><TD></TD><TD VALIGN=top><CODE>-vc divx4</CODE></TD><TD></TD>
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<TD><FONT CLASS="text">Uses the colorspace conversion of the codec.
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In this mode you can use YUY2/UYVY, too.</FONT></TD></TR>
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</TABLE>
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<P>The <CODE>-vc odivx</CODE> method is usually faster, due to the fact that it transfers
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image data in YV12 (planar YUV 4:2:0) format, thus requiring much less
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bandwidth on the bus. For packed YUV modes (YUY2, UYVY) use the <CODE>-vc divx4</CODE>
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method. For RGB modes the speed is the same, differing at best
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according to your current color depth.</P>
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<P>NOTE: If your -vo driver supports direct rendering, then <CODE>-vc divx4</CODE> may be
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faster, or even the fastest solution.</P>
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<P>Note: <B>OLD</B> OpenDivX supports postprocessing via the
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<CODE>-oldpp</CODE> option, but the range of values is strange:</P>
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<TABLE BORDER=0>
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<TR><TD> </TD><TD><FONT CLASS="text">0</FONT></TD><TD> </TD>
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<TD><FONT CLASS="text">no postprocessing</FONT></TD></TR>
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<TR><TD></TD><TD><FONT CLASS="text">10 .. 20</FONT></TD>
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<TD></TD><TD><FONT CLASS="text">normal postprocessing (like level 2 with divxds)</FONT></TD></TR>
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<TR><TD></TD><TD><FONT CLASS="text">30 .. 60</FONT></TD>
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<TD></TD><TD><FONT CLASS="text">hard postprocessing, CPU intensive (like level 4 with divxds)</FONT></TD></TR>
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</TABLE>
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<P><B><A NAME=2.2.1.2>2.2.1.2. FFmpeg DivX/libavcodec</A></B></P>
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<P>Beginning with version 0.4.2,
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<A HREF="http://ffmpeg.sourceforge.net">FFmpeg</A> contains an
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<B>open source</B> DivX codec, which is compatible with the traditional DivX.
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<B>MPlayer</B> supports this codec, making it possible to <B>watch
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DivX/DivX4/DivX5/MP42 movies on non-x86 platforms</B>. Furthermore it offers higher
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decoding speed than the Win32 codecs or the original
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DivX4 library!</P>
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<P>It also contains a lot of nice codecs, such as RealVideo 1.0, MJPEG, h263,
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h263+, etc.</P>
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<P>If you use an <B>MPlayer</B> release you have libavcodec right in the package,
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just build as usual. If you use <B>MPlayer</B> from CVS you have to extract
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libavcodec from the FFmpeg CVS tree as FFmpeg 0.4.5 does <B>not</B> work with
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<B>MPlayer</B>. In order to achieve this do:</P>
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<OL>
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<LI><CODE>cvs -d:pserver:anonymous@cvs.ffmpeg.sourceforge.net:/cvsroot/ffmpeg login</CODE></LI>
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<LI><CODE>cvs -d:pserver:anonymous@cvs.ffmpeg.sourceforge.net:/cvsroot/ffmpeg co ffmpeg</CODE></LI>
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<LI>Move the <CODE>libavcodec</CODE> directory from the FFmpeg sources to the
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root of the <B>MPlayer</B> CVS tree. It should look like this:
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<P> <CODE>main/libavcodec</CODE></P>
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Symlinking is <B>not</B> enough, you have to copy/move it!!!</LI>
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<LI>Compile. Configure should detect problems before compilation.</LI>
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</OL>
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<P><B>NOTE:</B> MPlayer from CVS does contain a libavcodec
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subdirectory, but it does NOT contain the source for libavcodec!
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You must follow the steps above to obtain the source for this library.</P>
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<P>The codec also <B>supports postprocessing!</B></P>
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<P>With FFmpeg and my Matrox G400, I can view even the highest resolution DivX
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movies without dropped frames on my K6/2 500.</P>
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<P><B><A NAME=2.2.1.3>2.2.1.3. XAnim codecs</A></B></P>
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<P>Foreword:<BR>
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Be advised that the XAnim binary codecs are packaged with a piece of text
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claiming to be a legally binding software license which, besides other
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restrictions, forbids the user to use the codecs in conjunction with any
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program other than XAnim. However, the XAnim author has yet to bring legal
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action against anyone for codec-related issues.
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</P>
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<P><B>MPlayer</B> is capable of employing the XAnim codecs for decoding. Follow
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the instructions to enable them:</P>
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<UL>
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<LI>Download the codecs you wish to use from the
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<A HREF="http://xanim.va.pubnix.com">XAnim site</A>. The <B>3ivx</B> codec
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is not there, but at the <A HREF="http://www.3ivx.com">3ivx site</A>.</LI>
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<LI>Use the <CODE>--with-xanimlibdir</CODE> option to tell configure where
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to find the XAnim codecs. By default, it looks for them at
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<CODE>/usr/local/lib/xanim/mods, /usr/lib/xanim/mods and /usr/lib/xanim</CODE>.
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Alternatively you can set the environment variable <I>XANIM_MOD_DIR</I> to
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the directory of the XAnim codecs.</LI>
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<LI>Rename/symlink the files, cutting out the architecture stuff, so they will
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have filenames like these: <CODE>vid_cvid.xa, vid_h263.xa, vid_iv50.xa</CODE>
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</UL>
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<P>XAnim is video codec family number 10, so you may want to use the <CODE>-vfm 10</CODE>
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option to tell <B>MPlayer</B> to use them if possible.</P>
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<P>Tested codecs include: <B>Indeo 3.2</B>, <B>4.1</B>, <B>5.0</B>, <B>CVID</B>, <B>3ivX</B>, <B>h263</B>.</P>
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<P><B><A NAME=2.2.1.4>2.2.1.4. VIVO video</A></B></P>
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<P><B>MPlayer</B> can play Vivo (1.0 and 2.0) videos. The most suitable codec
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for 1.0 files is FFmpeg's H263 decoder, you can use it with the <CODE>-vc
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ffh263</CODE> option (default) (requires up-to-date libavcodec). For 2.0 files, use
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the <CODE>ivvideo.dll</CODE> Win32 DLL file (from <A
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HREF="http://www.mplayerhq.hu/MPlayer/samples/drivers32/ivvideo.dll">here</A>),
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and install it under <CODE>/usr/lib/win32</CODE> or wherever you store the
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Win32 codecs. This latter codec does not support YV12 nor YUY2 only BGR modes,
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restricting it to the X11 and OpenGL outputs. Hopefully ffh263 will support
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VIVO 2.0 files in the future.</P>
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<P><B><A NAME=2.2.1.5>2.2.1.5. MPEG 1/2 video</A></B></P>
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<P>MPEG1 and MPEG2 are decoded by the multiplatform native <B>libmpeg2</B> library,
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whose source code is included in <B>MPlayer</B>.
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We handle buggy MPEG 1/2 video files by catching sig11 (segmentation fault),
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and quickly reinitializing the codec, continuing exactly from where the failure
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occurred.
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This recovery technique has no measurable speed penalty.</P>
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<P><B><A NAME=2.2.1.6>2.2.1.6. MS Video1</A></B></P>
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<P>This is a very old and very bad codec from Microsoft. In the past it was
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decoded with the <CODE>msvidc32.dll</CODE> Win32 codec, now we have our own
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open source implementation (by <A HREF="mailto:melanson@pcisys.net">Mike
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Melanson</A>).</P>
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<P><B><A NAME=2.2.1.7>2.2.1.7. Cinepak CVID</A></B></P>
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<P><B>MPlayer</B> uses its own open source, multiplatform Cinepak decoder by
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default. It supports YUV outputs, so that hardware scaling is possible if the
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video output driver permits it.</P>
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<P><B><A NAME=2.2.1.8>2.2.1.8. RealVideo</A></B></P>
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<P>Currently <B>only</B> the RealVideo 1.0 (fourcc RV10) codec is supported through
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FFmpeg. Sadly, new RealMedia files come with the newer and closed source RV20 and
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RV30 codecs instead. Their future support is unlikely :(</P>
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<P><B><A NAME=2.2.1.9>2.2.1.9. XViD</A></B></P>
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<P><B>XViD</B> is another development from the OpenDivX group (their first
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development was DivX4).</P>
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<P><B>Advantages:</B></P>
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<UL>
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<LI>open source</LI>
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<LI>its API is compatible with DivX4 so adding support for
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it is easy</LI>
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<LI>2-pass encoding support</LI>
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<LI>nice encoding quality, higher speed than DivX4 (you can optimize it for
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your box while compiling)</LI>
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</UL>
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<P><B>Disadvantages:</B></P>
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<UL>
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<LI>currently it does not properly <B>decode</B> all DivX/DivX4 files (no problem as libavcodec can play them)</LI>
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<LI>you have to choose between DivX4 <B>OR</B> XViD support at
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compiletime</LI>
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<LI>under development</LI>
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</UL>
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<P><B>Installation:</B> It is currently available only from CVS. Here are the
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download and installation instructions:</P>
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<OL>
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<LI><CODE>cvs -z3 -d:pserver:anonymous@cvs.xvid.org:/xvid login</CODE></LI>
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<LI><CODE>cvs -z3 -d:pserver:anonymous@cvs.xvid.org:/xvid co xvidcore</CODE></LI>
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<LI><CODE>cd xvidcore/build/generic</CODE></LI>
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<LI>Edit <CODE>Makefile.linux</CODE> to fit your needs.</LI>
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<LI><CODE>make -f Makefile.linux</CODE></LI>
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<LI>Get <CODE>encore2.h</CODE> and <CODE>decore.h</CODE> from the DivX4Linux
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package, and copy them to <CODE>/usr/local/include/</CODE>.</LI>
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<LI>Recompile <B>MPlayer</B> with <CODE>--with-xvidcore=/path/to/libcore.a</CODE>.</LI>
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</OL>
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<P><B><A NAME=2.2.2>2.2.2. Audio codecs</A></B></P>
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<P>The most important audio codecs above all:<BR></P>
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<UL>
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<LI>MPEG layer 2, and layer 3 (MP3) audio (<B>native</B> code, with MMX/SSE/3DNow! optimization)</LI>
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<LI>MPEG layer 1 audio (<B>native</B> code, with libavcodec)</LI>
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<LI>AC3 Dolby audio (<B>native</B> code, with MMX/SSE/3DNow! optimization)</LI>
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<LI>Ogg Vorbis audio codec (<B>native</B> library)</LI>
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<LI>Voxware audio (using DirectShow DLL)</LI>
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<LI>alaw, msgsm, pcm and other simple old audio formats</LI>
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<LI>VIVO audio (g723, Vivo Siren)</LI>
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<LI>RealAudio: DNET (low bitrate AC3)</LI>
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</UL>
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<P><B><A NAME=2.2.2.1>2.2.2.1. Software AC3 decoding</A></B></P>
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<P>This is the default decoder used for files with AC3 audio.</P>
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<P>The AC3 decoder can create audio output mixes for 2, 4, or 6
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speakers. When configured for 6 speakers, this decoder provides
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separate output of all the AC3 channels to the sound driver,
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allowing for full "surround sound" experience without the external AC3
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decoder required to use the hwac3 codec.</P>
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<P>Use the <CODE>-channels</CODE> option to select the number of output channels.
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Use <CODE>-channels 2</CODE> for a stereo downmix. For a 4 channel downmix (Left
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Front, Right Front, Left Surround and Right Surround outputs), use
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<CODE>-channels 4</CODE>. In this case, any center channel will be mixed
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equally to the front channels. <CODE>-channels 6</CODE> will output all the AC3
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channels as they are encoded - in the order Left, Right, Left Surround, Right
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Surround, Center and LFE.</P>
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<P>The default number of output channels is 2.</P>
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<P>To use more than 2 output channels, you will need to use OSS, and have a sound
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card that supports the appropriate number of output channels via the
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SNDCTL_DSP_CHANNELS ioctl. An example of a suitable driver is emu10k1 (used by
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Soundblaster Live! cards) from August 2001 or newer (ALSA CVS is also supposed to
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work).</P>
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<P><B><A NAME=2.2.2.2>2.2.2.2. Hardware AC3 decoding</A></B></P>
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<P>You need an AC3 capable sound card, with digital out (SP/DIF). The
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card's driver must properly support the AFMT_AC3 format (C-Media does).
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Connect your AC3 decoder to the SP/DIF output, and use the <CODE>-ac hwac3</CODE>
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option. It is experimental but known to work with C-Media cards and Soundblaster
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Live! + ALSA (but not OSS) drivers.</P>
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<P><B><A NAME=2.2.2.3>2.2.2.3. libmad support</A></B></P>
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<P><A HREF="http://mad.sourceforge.net">libmad</A> is a multiplatform MPEG audio
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decoding library. It does not handle broken files well, and it sometimes has
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problems with seeking.</P>
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<P>To enable support, compile with the <CODE>--enable-mad</CODE> configure
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option.</P>
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<P><B><A NAME=2.2.2.4>2.2.2.4. VIVO audio</A></B></P>
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<P>The audio codec used in VIVO files depends on whether it is a VIVO/1.0 or
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VIVO/2.0 file. VIVO/1.0 files have <B>g.723</B> audio, and VIVO/2.0 files
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have <B>Vivo Siren</B> audio. Both are supported. You can grab the g.723/Siren
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Win32 DLL from
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<A HREF="http://www.mplayerhq.hu/MPlayer/samples/drivers32/vivog723.acm">here</A>,
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then copy it into the <CODE>/usr/lib/win32</CODE> directory.</P>
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<P><B><A NAME=2.2.2.5>2.2.2.5. RealAudio</A></B></P>
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<P>Currently the only supported one is the DNET codec. Actually it is a
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low-bitrate version of the well known AC3 codec. It can be found in both
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old and new RealMedia movies.</P>
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<P><B><A NAME=2.2.3>2.2.3. Win32 codec importing HOWTO</A></B></P>
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<P><B><A NAME=2.2.3.1>2.2.3.1. VFW codecs</A></B></P>
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<P>VFW (Video for Windows) is the old Video API for Windows. Its codecs have
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the .DLL or (rarely) .DRV extension.
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If <B>MPlayer</B> fails at playing your AVI with this kind of message:</P>
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<P> <CODE>UNKNOWN video codec: HFYU (0x55594648)</CODE></P>
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<P>It means your AVI is encoded with a codec which has the HFYU fourcc (HFYU =
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HuffYUV codec, DIV3 = DivX Low Motion, etc...). Now that you know this, you
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have to find out which DLL Windows loads in order to play this file. In our
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case, the <CODE>system.ini</CODE> contains this information in a line that reads:</P>
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<P> <CODE>VIDC.HFYU=huffyuv.dll</CODE></P>
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<P>So you need the <CODE>huffyuv.dll</CODE> file. Note that the audio codecs are
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specified by the MSACM prefix:</P>
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<P> <CODE>msacm.l3acm=L3codeca.acm</CODE></P>
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<P>This is the MP3 codec.
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Now that you have all the necessary information (fourcc, codec file, sample AVI),
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submit your codec support request by mail, and upload these files to the FTP site:</P>
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<P> <CODE>ftp://ftp.mplayerhq.hu/MPlayer/incoming/[codecname]/</CODE></P>
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<P><B><A NAME=2.2.3.2>2.2.3.2. DirectShow codecs</A></B></P>
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<P>DirectShow is the newer Video API, which is even worse than its predecessor.
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Things are harder with DirectShow, since</P>
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<UL>
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<LI><CODE>system.ini</CODE> does not contain the needed information, instead it
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is stored in the registry and
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<LI>we need the GUID of the codec.
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</UL>
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<P>Take a deep breath and start searching the registry...</P>
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<UL>
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<LI>Start <CODE>regedit</CODE>.
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<LI>Press <CODE>Ctrl-f</CODE>, disable the first two checkboxes, and enable the
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third. Type in the fourcc of the codec (e.g. TM20).
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<LI>You should see a field which contains the path and the filename
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|
(e.g. <CODE>C:\WINDOWS\SYSTEM\TM20DEC.AX</CODE>).
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<LI>Now that you have the file, we need the GUID. Try searching again, but
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now search for the codec's name, not the fourcc. Its name can be acquired
|
|
when Media Player is playing the file, by checking File->Properties->Advanced.
|
|
If not, you are out of luck. Try guessing (e.g. search for TrueMotion).
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<LI>If the GUID is found you should see a FriendlyName and a CLSID
|
|
field. Write down the 16 byte CLSID, this is the GUID we need.
|
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</UL>
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<P>NOTE: If searching fails, try enabling all the checkboxes. You may have
|
|
false hits, but you may get lucky...</P>
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<P>Now that you have all the necessary information (fourcc, GUID, codec file,
|
|
sample AVI), submit your codec support request by mail, and upload these files
|
|
to the FTP site:</P>
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<P> <CODE>ftp://ftp.mplayerhq.hu/MPlayer/incoming/[codecname]/</CODE></P>
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</HTML>
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