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diff --git a/DOCS/en/codecs.html b/DOCS/en/codecs.html new file mode 100644 index 0000000000..a163bfa651 --- /dev/null +++ b/DOCS/en/codecs.html @@ -0,0 +1,539 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> +<HTML> + +<HEAD> + <TITLE>Codecs - MPlayer - The Movie Player for Linux</TITLE> + <LINK REL="stylesheet" TYPE="text/css" HREF="default.css"> + <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> +</HEAD> + +<BODY> + + +<H2><A NAME="codecs">2.2 Supported codecs</A></H2> + + +<H3><A NAME="video_codecs">2.2.1 Video codecs</A></H3> + +<P>See the + <A HREF="http://www.mplayerhq.hu/DOCS/codecs-status.html">codec status table</A> + for the complete, daily generated list. Quite a few codecs are available for + download from our homepage. Grab them from our + <A HREF="http://www.mplayerhq.hu/MPlayer/releases/codecs/">codecs page</A>.</P> + +<P>The most important ones above all:</P> +<UL> + <LI><B>MPEG1</B> (<B>VCD</B>) and <B>MPEG2</B> (<B>DVD</B>) video</LI> + <LI>native decoders for <B>DivX ;-)</B>, <B>OpenDivX</B>, <B>DivX4</B>, <B> + DivX5</B>, <B>M$ MPEG4</B> v1, v2 and other MPEG4 variants</LI> + <LI>native decoder for <B>Windows Media Video 7/8</B> (<B>WMV1/WMV2</B>), and + Win32 DLL decoder for <B>Windows Media Video 9</B> (<B>WMV3</B>), both + used in .wmv files</LI> + <LI>native <B>Sorenson 1 (SVQ1)</B> decoder</LI> + <LI>Win32/QT <B>Sorenson 3 (SVQ3)</B> decoder</LI> + <LI><B>3ivx</B> v1, v2 decoder</LI> + <LI>Cinepak and <B>Intel Indeo</B> codecs (3.1, 3.2, 4.1, 5.0)</LI> + <LI><B>MJPEG</B>, AVID, VCR2, ASV2 and other hardware formats</LI> + <LI>VIVO 1.0, 2.0, I263 and other <B>h263</B>(+) variants</LI> + <LI>FLI/FLC</LI> + <LI><B>RealVideo 1.0</B> codec from libavcodec, and <B>RealVideo 2.0</B>, + <B>3.0</B> and <B>4.0</B> codecs using RealPlayer libraries</LI> + <LI>native decoder for HuffYUV</LI> + <LI>various old simple RLE-like formats</LI> +</UL> + +<P>If you have a Win32 codec not listed here which is not supported yet, please + read the <A HREF="#importing">codec importing HOWTO</A> and help us add support + for it.</P> + + +<H4><A NAME="divx">2.2.1.1 DivX4/DivX5</A></H4> + +<P>This section contains information about the DivX4 and DivX5 codecs of + <A HREF="http://www.projectmayo.com">Project Mayo</A>. Their first available + alpha version was OpenDivX 4.0 alpha 47 and 48. Support for this was included + in MPlayer in the past, and built by default. We also used its + postprocessing code to optionally enhance visual quality of MPEG1/2 movies. + Now we use our own, for all file types.</P> + +<P>The new generation of this codec is called DivX4 and can even decode + movies made with the infamous DivX codec! In addition it is much faster than + the native Win32 DivX DLLs but slower than libavcodec. Hence its usage as a + decoder is <B>DISCOURAGED</B>. However, it is useful for encoding. One + disadvantage of this codec is that it is not available under an Open Source + license.</P> + +<P>DivX4Linux works in two modes:</P> + +<DL> + <DT><CODE>-vc odivx</CODE></DT> + <DD>Uses the codec in OpenDivX fashion. In this case it + produces YV12 images in its own buffer, and MPlayer does colorspace + conversion via libvo. (<B>Fast, recommended!</B>)</DD> + + <DT><CODE>-vc divx4</CODE></DT> + <DD>Uses the colorspace conversion of the codec. + In this mode you can use YUY2/UYVY, too. (<B>SLOW</B>)</DD> +</DL> + +<P>The <CODE>-vc odivx</CODE> method is usually faster, due to the fact that it + transfers image data in YV12 (planar YUV 4:2:0) format, thus requiring much + less bandwidth on the bus. For packed YUV modes (YUY2, UYVY) use the + <CODE>-vc divx4</CODE> method. For RGB modes the speed is the same, differing + at best according to your current color depth.</P> + +<P><B>Note:</B> If your <CODE>-vo</CODE> driver supports direct rendering, then + <CODE>-vc divx4</CODE> may be faster or even the fastest solution.</P> + +<P>The Divx4/5 binary codec library can be downloaded from + <A HREF="http://avifile.sourceforge.net">avifile</A> or + <A HREF="http://www.divx.com">divx.com</A>. + Unpack it, run <CODE>./install.sh</CODE> as root and do not forget adding + <CODE>/usr/local/lib</CODE> to your <CODE>/etc/ld.so.conf</CODE> and running + <CODE>ldconfig</CODE>.</P> + +<P>Get the CVS version of the OLD OpenDivx core library like this:</P> + +<OL> + <LI><CODE>cvs -d:pserver:anonymous@cvs.projectmayo.com:/cvsroot login</CODE></LI> + <LI><CODE>cvs -d:pserver:anonymous@cvs.projectmayo.com:/cvsroot co divxcore</CODE></LI> + <LI>This core library is split into a decore and encore library that have to + be compiled separately. For the decore Library, simply type + <PRE> + cd divxcore/decore/build/linux + make + cp libdivxdecore.so /usr/local/lib + ln -s /usr/local/lib/libdivxdecore.so /usr/local/lib/libdivxdecore.so.0 + cp ../../src/decore.h /usr/local/include + </PRE> + </LI> + <LI>Alas, for the encore library there is no Linux Makefile available, and the + MMX optimized code only works on Windows. You can still compile it, though, + by using this + <A HREF="ftp://ftp.mplayerhq.hu/MPlayer/contrib/divx-mf/Makefile">Makefile</A>. + <PRE> + cd ../../../encore/build + mkdir linux + cd linux + cp path/Makefile . + make + cp libdivxencore.so /usr/local/lib + ln -s /usr/local/lib/libdivxdecore.so /usr/local/lib/libdivxdecore.so.0 + cp ../../src/encore.h /usr/local/include + </PRE> + </LI> +</OL> + +<P>MPlayer autodetects DivX4/DivX5 if it is properly installed, just + compile as usual. If it does not detect it, you did not install or configure + it correctly.</P> + + +<H4><A NAME="libavcodec">2.2.1.2 FFmpeg DivX/libavcodec</A></H4> + +<P><A HREF="http://ffmpeg.sourceforge.net">FFmpeg</A> contains an + <B>open source</B> codec package, which is capable of decoding streams + encoded with + H263/MJPEG/RV10/DivX3/DivX4/DivX5/MP41/MP42/WMV1/WMV2/HuffYUV + video, or WMA (Windows Media Audio) audio codecs. Not only some of + them can be encoded with, but it also offers higher speed than the Win32 + codecs or the DivX.com DivX4/5 library!</P> + +<P>It contains a lot of nice codecs, especially important are the MPEG4 + variants: + DivX3, DivX4, DivX5, Windows Media Video 7 (WMV1). Also a very + interesting one is the WMA decoder.</P> + +<P>If you use an MPlayer release you have libavcodec right in the + package, just build as usual. If you use MPlayer from CVS you have to + extract libavcodec from the FFmpeg CVS tree as FFmpeg releases <B>don't</B> + work with MPlayer. In order to achieve this do:</P> + +<OL> + <LI><CODE>cvs -d:pserver:anonymous@cvs.ffmpeg.sourceforge.net:/cvsroot/ffmpeg login</CODE></LI> + <LI><CODE>cvs -d:pserver:anonymous@cvs.ffmpeg.sourceforge.net:/cvsroot/ffmpeg co ffmpeg</CODE></LI> + <LI>Move the <CODE>libavcodec</CODE> directory from the FFmpeg sources to the + root of the MPlayer CVS tree. It should look like this: + <P> <CODE>main/libavcodec</CODE></P> + Symlinking is <B>not</B> enough, you have to copy or move it!</LI> + <LI>Compile. Configure should detect problems before compilation.</LI> +</OL> + +<P><B>Note:</B> MPlayer from CVS does contain a libavcodec + subdirectory, but it does <B>not</B> contain the source for libavcodec! + You must follow the steps above to obtain the source for this library.</P> + +<P>With FFmpeg and my Matrox G400, I can view even the highest resolution DivX + movies without dropped frames on my K6/2 500.</P> + + +<H4><A NAME="xanim">2.2.1.3 XAnim codecs</A></H4> + +<H4>FOREWORD</H4> +<P> + Be advised that the XAnim binary codecs are packaged with a piece of text + claiming to be a legally binding software license which, besides other + restrictions, forbids the user to use the codecs in conjunction with any + program other than XAnim. However, the XAnim author has yet to bring legal + action against anyone for codec-related issues. +</P> + +<H4>INSTALLATION AND USAGE</H4> +<P>MPlayer is capable of employing the XAnim codecs for decoding. Follow + the instructions to enable them:</P> + +<OL> + <LI>Download the codecs you wish to use from the + <A HREF="http://xanim.va.pubnix.com">XAnim site</A>. The <B>3ivx</B> codec + is not there, but at the <A HREF="http://www.3ivx.com">3ivx site</A>.</LI> + <LI><B>OR</B> download the codecs pack from our + <A HREF="http://www.mplayerhq.hu/MPlayer/releases/codecs/">codecs page</A>. + </LI> + <LI>Use the <CODE>--with-xanimlibdir</CODE> option to tell configure where + to find the XAnim codecs. By default, it looks for them at + <CODE>/usr/local/lib/xanim/mods, /usr/lib/xanim/mods and /usr/lib/xanim</CODE>. + Alternatively you can set the environment variable <I>XANIM_MOD_DIR</I> to + the directory of the XAnim codecs.</LI> + <LI>Rename/symlink the files, cutting out the architecture stuff, so they will + have filenames like these: <CODE>vid_cvid.xa, vid_h263.xa, vid_iv50.xa</CODE>.</LI> +</OL> + +<P>XAnim is video codec family <CODE>xanim</CODE>, so you may want to use the <CODE>-vfm xanim</CODE> + option to tell MPlayer to use them if possible.</P> + +<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> + + +<H4><A NAME="vivo_video">2.2.1.4 VIVO video</A></H4> + +<P>MPlayer can play Vivo (1.0 and 2.0) videos. The most suitable codec + for 1.0 files is FFmpeg's H263 decoder, you can use it with the <CODE>-vc + ffh263</CODE> option. For 2.0 files, use the Win32 DLL through the + <CODE>-vc vivo</CODE> option. If you do not supply command line options + MPlayer selects the best codec automatically.</P> + + +<H4><A NAME="mpeg">2.2.1.5 MPEG 1/2 video</A></H4> + +<P>MPEG1 and MPEG2 are decoded by the multiplatform native <B>libmpeg2</B> + library, whose source code is included in MPlayer. We handle buggy + MPEG 1/2 video files by catching <CODE>Signal 11 (Segmentation fault)</CODE>, + and quickly reinitializing the codec, continuing exactly from where the + failure occurred. This recovery technique has no measurable speed penalty.</P> + + +<H4><A NAME="ms_video1">2.2.1.6 MS Video1</A></H4> + +<P>This is a very old and very bad codec from Microsoft. In the past it was + decoded with the <CODE>msvidc32.dll</CODE> Win32 codec, now we have our own + open source implementation (by <A HREF="mailto:melanson@pcisys.net">Mike + Melanson</A>).</P> + + +<H4><A NAME="cinepak">2.2.1.7 Cinepak CVID</A></H4> + +<P>MPlayer uses its own open source, multiplatform Cinepak decoder (by + <A HREF="mailto:timf@csse.monash.edu.au">Dr. Tim Ferguson</A>), by default. + It supports YUV outputs, so that hardware scaling is possible if the video + output driver permits it.</P> + + +<H4><A NAME="realvideo">2.2.1.8 RealVideo</A></H4> + +MPlayer supports decoding all versions of RealVideo: + +<UL> + <LI>RealVideo 1.0 (fourcc RV10) - en/decoding supported by <B>libavcodec</B></LI> + <LI>RealVideo 2.0, 3.0, 4.0 (fourcc RV20, RV30, RV40) - decoding supported by <B>RealPlayer libraries</B></LI> +</UL> + +<P>It is recommended to download and install RealPlayer8 or RealONE, because + MPlayer can use their libraries to decode files with RealVideo 2.0 - + 4.0 video. The MPlayer configure script should detect the + RealPlayer libraries in the standard locations of a full installation. If it + does not, tell configure where to look with the + <CODE>--with-reallibdir</CODE> option.</P> + +<P><B>Note:</B> RealPlayer libraries currently <B>only work with Linux, FreeBSD, + NetBSD and Cygwin on the x86 and Alpha platforms.</B></P> + + +<H4><A NAME="xvid">2.2.1.9 XViD</A></H4> + +<P><A HREF="http://www.xvid.org/"><B>XViD</B></A> is a forked development of + the OpenDivX codec. It happened when ProjectMayo changed OpenDivX to closed + source DivX4 (now DivX5), and the non-ProjectMayo people working on OpenDivX + got angry, then started XViD. So both projects have the same origin.</P> + +<H4>ADVANTAGES</H4> + +<UL> + <LI>open source</LI> + <LI>its API is compatible with DivX4 so adding support for it is easy</LI> + <LI>2-pass encoding support</LI> + <LI>nice encoding quality, higher speed than DivX4 (you can optimize it for + your box while compiling)</LI> +</UL> + +<H4>DISADVANTAGES</H4> + +<UL> + <LI>currently it does not properly <B>decode</B> all DivX/DivX4 files (no + problem as <A HREF="#libavcodec">libavcodec</A> can play them)</LI> + <LI>you have to choose between DivX4 <B>or</B> XViD support at compiletime</LI> + <LI>under development</LI> +</UL> + +<H4>INSTALLING XVID CVS</H4> + +<P>XViD is currently available only from CVS. Here are the + download and installation instructions:</P> + +<OL> + <LI><CODE>cvs -z3 -d:pserver:anonymous@cvs.xvid.org:/xvid login</CODE></LI> + <LI><CODE>cvs -z3 -d:pserver:anonymous@cvs.xvid.org:/xvid co xvidcore</CODE></LI> + <LI><CODE>cd xvidcore/build/generic</CODE></LI> + <LI>Edit the Makefile for your architecture (probably + <CODE>Makefile.linuxx86</CODE>) to fit your needs.</LI> + <LI><CODE>make -f Makefile.linuxx86</CODE></LI> + <LI>Copy the <CODE>divx4.h</CODE> and <CODE>xvid.h</CODE> header files from + <CODE>xvidcore/src/</CODE> to <CODE>/usr/local/include/</CODE>.</LI> + <LI>Get <CODE>encore2.h</CODE> and <CODE>decore.h</CODE> from the DivX4Linux + package, and copy them to <CODE>/usr/local/include/</CODE>.</LI> + <LI>Recompile MPlayer with <CODE>--with-xvidcore=/path/to/libxvidcore.a</CODE>.</LI> +</OL> + + +<H4><A NAME="sorenson">2.2.1.10 Sorenson</A></H4> + +<P><B>Sorenson</B> is a video codec family developed by Sorenson Media and + licensed to Apple who distribute it with their QuickTime Player. We are + currently able to decode all versions of Sorenson video files with the + following decoders:</P> + +<UL> + <LI>Sorenson 1 (fourcc <I>SVQ1</I>) - decoding supported by <B>native + codecs</B><BR> + Actually there are two (nearly equal) decoders for SVQ1: one is built in + MPlayer, the other is in libavcodec. You can invoke each of them with the + <CODE>-vc svq1</CODE> and <CODE>-vc ffsvq1</CODE> options respectively. + Some files may work with one of them, and not with the other, so test + both decoders. The decoder was written (reverse engineered) by the + <A HREF="http://www.xinehq.de">xine</A> authors.</LI> + <LI>Sorenson 3 (fourcc <I>SVQ3</I>) - decoding supported by <B>Win32 + QuickTime libraries</B></LI> +</UL> + +<H4>COMPILING MPLAYER WITH QUICKTIME LIBRARIES SUPPORT</H4> + +<P><B>NOTE:</B> currently only 32bit Intel platforms are supported.</P> + +<OL> + <LI>download MPlayer CVS</LI> + <LI>compile MPlayer with:<BR> + <CODE>$ ./configure --enable-qtx-codecs</CODE></LI> + <LI>download QuickTime DLL pack from + <A HREF="http://www.mplayerhq.hu/MPlayer/releases/codecs/">http://www.mplayerhq.hu/MPlayer/releases/codecs/</A></LI> + <LI>extract QuickTime DLL pack to your Win32 codecs directory (default: + <CODE>/usr/lib/win32</CODE>)</LI> +</OL> + + +<H3><A NAME="audio_codecs">2.2.2 Audio codecs</A></H3> + +<P>The most important audio codecs above all:<BR></P> + +<UL> + <LI>MPEG layer 2 (MP2), and layer 3 (MP3) audio (<B>native</B> code, with + MMX/SSE/3DNow! optimization)</LI> + <LI>MPEG layer 1 audio (<B>native</B> code, with libavcodec)</LI> + <LI>Windows Media Audio v1, v2 (<B>native</B> code, with libavcodec)</LI> + <LI>Windows Media Audio 9 (WMAv3) (using DMO DLL)</LI> + <LI>AC3 Dolby audio (<B>native</B> code, with MMX/SSE/3DNow! + optimization)</LI> + <LI>AC3 passing through soundcard hardware</LI> + <LI>Ogg Vorbis audio codec (<B>native</B> library)</LI> + <LI>RealAudio: DNET (low bitrate AC3), Cook, Sipro and ATRAC3</LI> + <LI>QuickTime: Qualcomm and QDesign audio codecs</LI> + <LI>VIVO audio (g723, Vivo Siren)</LI> + <LI>Voxware audio (using DirectShow DLL)</LI> + <LI>alaw and ulaw, various gsm, adpcm and pcm formats and other simple old + audio codecs</LI> +</UL> + + +<H4><A NAME="software_ac3">2.2.2.1 Software AC3 decoding</A></H4> + +<P>This is the default decoder used for files with AC3 audio.</P> + +<P>The AC3 decoder can create audio output mixes for 2, 4, or 6 speakers. When + configured for 6 speakers, this decoder provides separate output of all the + AC3 channels to the sound driver, allowing for full "surround sound" + experience without the external AC3 decoder required to use the hwac3 + codec.</P> + +<P>Use the <CODE>-channels</CODE> option to select the number of output + channels. Use <CODE>-channels 2</CODE> for a stereo downmix. For a 4 + channel downmix (Left Front, Right Front, Left Surround and Right Surround + outputs), use <CODE>-channels 4</CODE>. In this case, any center channel will + be mixed equally to the front channels. <CODE>-channels 6</CODE> will output + all the AC3 channels as they are encoded - in the order Left, Right, Left + Surround, Right Surround, Center and LFE.</P> + +<P>The default number of output channels is 2.</P> + +<P>To use more than 2 output channels, you will need to use OSS, and have a + sound card that supports the appropriate number of output channels via the + SNDCTL_DSP_CHANNELS ioctl. An example of a suitable driver is emu10k1 (used + by Soundblaster Live! cards) from August 2001 or newer (ALSA CVS is also + supposed to work).</P> + + +<H4><A NAME="hardware_ac3">2.2.2.2 Hardware AC3 decoding</A></H4> + +<P>You need an AC3 capable sound card, with digital out (SP/DIF). The card's + driver must properly support the AFMT_AC3 format (C-Media does). Connect + your AC3 decoder to the SP/DIF output, and use the <CODE>-ac hwac3</CODE> + option. It is experimental but known to work with C-Media cards, + Soundblaster Live! using ALSA (but not OSS) drivers and DXR3/Hollywood+ MPEG + decoder cards.</P> + + +<H4><A NAME="libmad">2.2.2.3 libmad support</A></H4> + +<P><A HREF="http://mad.sourceforge.net">libmad</A> is a multiplatform MPEG + audio decoding library. It does not handle broken files well, and it + sometimes has problems with seeking.</P> + +<P>To enable support, compile with the <CODE>--enable-mad</CODE> configure + option.</P> + + +<H4><A NAME="vivo_audio">2.2.2.4 VIVO audio</A></H4> + +<P>The audio codec used in VIVO files depends on whether it is a VIVO/1.0 or + VIVO/2.0 file. VIVO/1.0 files have <B>g.723</B> audio, and VIVO/2.0 files + have <B>Vivo Siren</B> audio. Both are supported.</P> + +<H4><A NAME="realaudio">2.2.2.5 RealAudio</A></H4> + +MPlayer supports decoding nearly all versions of RealAudio: + +<UL> + <LI>RealAudio DNET - decoding supported by <B>liba52</B></LI> + <LI>RealAudio Cook/Sipro/ATRAC3 - decoding supported by <B>RealPlayer + libraries</B></LI> +</UL> + +<P>On how to install RealPlayer libraries, see the + <A HREF="#realvideo">RealVideo</A> section.</P> + + +<H4><A NAME="qdesign">2.2.2.6 QDesign codecs</A></H4> + +<P>QDesign audio streams (fourcc: <I>QDMC</I>, <I>QDM2</I>) are found in MOV/QT + files. Both versions of this codec can be decoded with QuickTime libraries. + For installation instructions please see the <A HREF="#sorenson">Sorenson + video codec</A> section.</P> + + +<H4><A NAME="qclp">2.2.2.7 Qualcomm codec</A></H4> + +<P>Qualcomm audio stream (fourcc: <I>Qclp</I>) is found in MOV/QT files. + It can be decoded with QuickTime libraries. For installation instructions + please see the <A HREF="#sorenson">Sorenson video codec</A> section.</P> + + +<H3><A NAME="importing">2.2.3 Win32 codec importing HOWTO</A></H3> + + +<H4><A NAME="importing_vfw">2.2.3.1 VFW codecs</A></H4> + +<P>VFW (Video for Windows) is the old Video API for Windows. Its codecs have + the .DLL or (rarely) .DRV extension. + If MPlayer fails at playing your AVI with this kind of message:</P> + +<P> <CODE>UNKNOWN video codec: HFYU (0x55594648)</CODE></P> + +<P>It means your AVI is encoded with a codec which has the HFYU fourcc (HFYU = + HuffYUV codec, DIV3 = DivX Low Motion, etc...). Now that you know this, you + have to find out which DLL Windows loads in order to play this file. In our + case, the <CODE>system.ini</CODE> contains this information in a line that + reads:</P> + +<P> <CODE>VIDC.HFYU=huffyuv.dll</CODE></P> + +<P>So you need the <CODE>huffyuv.dll</CODE> file. Note that the audio codecs are + specified by the MSACM prefix:</P> + +<P> <CODE>msacm.l3acm=L3codeca.acm</CODE></P> + + +<P>This is the MP3 codec. Now that you have all the necessary information + (fourcc, codec file, sample AVI), submit your codec support request by mail, + and upload these files to the FTP site:</P> + +<P> <CODE>ftp://ftp.mplayerhq.hu/MPlayer/incoming/[codecname]/</CODE></P> + +<P><B>Note:</B> On Windows NT/2000/XP search for this info in the registry, e.g. search for + "VIDC.HFYU". To find out how to do this, look at the old DirectShow method below.</P> + +<H4><A NAME="importing_directshow">2.2.3.2 DirectShow codecs</A></H4> + +<P>DirectShow is the newer Video API, which is even worse than its predecessor. + Things are harder with DirectShow, since</P> + +<UL> + <LI><CODE>system.ini</CODE> does not contain the needed information, instead it + is stored in the registry and</LI> + <LI>we need the GUID of the codec.</LI> +</UL> + +<P><B>New Method:</B> Using Microsoft GraphEdit (fast)</P> + +<OL> + <LI>Get GraphEdit from either DirectX SDK or + <A HREF="http://doom9.org">Doom9</A>.</LI> + <LI>Start <CODE>graphedit.exe</CODE>.</LI> + <LI>From the menu select Graph -> Insert Filters.</LI> + <LI>Expand item <CODE>DirectShow Filters</CODE>.</LI> + <LI>Select the right codec name and expand item.</LI> + <LI>In the entry <CODE>DisplayName</CODE> look at the text in winged brackets + after the backslash and write it down (five dash-delimited blocks, the + GUID).</LI> + <LI>The codec binary is the file specified in the <CODE>Filename</CODE> + entry.</LI> +</OL> + +<P><B>Note:</B> If there is no <CODE>Filename</CODE> entry and <CODE>DisplayName</CODE> + contains something like <CODE>device:dmo</CODE>, then it is a DMO-Codec.</P> + +<P><B>Old Method:</B> Take a deep breath and start searching the registry...</P> + +<OL> + <LI>Start <CODE>regedit</CODE>.</LI> + <LI>Press <CODE>Ctrl-f</CODE>, disable the first two checkboxes, and enable + the third. Type in the fourcc of the codec (e.g. TM20).</LI> + <LI>You should see a field which contains the path and the filename + (e.g. <CODE>C:\WINDOWS\SYSTEM\TM20DEC.AX</CODE>).</LI> + <LI>Now that you have the file, we need the GUID. Try searching again, but + 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).</LI> + <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.</LI> +</OL> + +<P><B>Note:</B> If searching fails, try enabling all the checkboxes. You may have + false hits, but you may get lucky...</P> + +<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> + +<P> <CODE>ftp://ftp.mplayerhq.hu/MPlayer/incoming/[codecname]/</CODE></P> + +</BODY> +</HTML> |