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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML>
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<HEAD>
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<TITLE>Formats - MPlayer - The Movie Player for Linux</TITLE>
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<LINK REL="stylesheet" TYPE="text/css" HREF="default.css">
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<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
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</HEAD>
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2002-06-12 23:53:28 +00:00
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<BODY>
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<H2><A NAME="formats">2.1 Supported formats</A></H2>
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<P>It is important to clarify a common mistake. When people see a file with a
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<B>.AVI</B> extension, they immediately conclude that it is not an MPEG file.
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That is not true. At least not entirely. Contrary to popular belief such a
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file <B>can</B> contain MPEG1 video.</P>
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<P>You see, a <B>codec</B> is not the same as a <B>file format</B>.<BR>
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Examples of video <B>codecs</B> are: MPEG1, MPEG2, DivX, Indeo5, 3ivx.<BR>
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Examples of file <B>formats</B> are: MPG, AVI, ASF.</P>
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<P>In theory, you can put an OpenDivX video and MP3 audio into an <B>MPG</B>
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format file. However, most players will not play it, since they expect MPEG1
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video and MP2 audio (unlike <B>AVI</B>, <B>MPG</B> does not have the
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necessary fields to describe its video and audio streams). Or you might put
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MPEG1 video into an AVI file.
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<A HREF="http://ffmpeg.sourceforge.net">FFmpeg</A> and
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<A HREF="encoding.html">MEncoder</A> can create these files.</P>
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2002-08-20 00:33:04 +00:00
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<H3><A NAME="video_formats">2.1.1 Video formats</A></H3>
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<H4><A NAME="mpeg">2.1.1.1 MPEG files</A></H4>
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<P>MPEG files come in different guises:</P>
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<UL>
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<LI>MPG: This is the most <B>basic</B> form of the MPEG file formats. It
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contains MPEG1 video, and MP2 (MPEG-1 layer 2) or rarely MP1 audio.</LI>
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<LI>DAT: This is the very same format as MPG with a different extension. It
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is used on <B>Video CD</B>s. Due to the way VCDs are created and Linux is
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designed, DAT files cannot be played nor copied from VCDs as regular files.
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You have to use the <CODE>-vcd</CODE> option to play the Video CD.</LI>
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<LI>VOB: This is the MPEG file format on <B>DVD</B>s. It is the same as MPG,
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plus the capability to contain subtitles or non-MPEG (AC3) audio. It
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contains encoded MPEG2 video and usually AC3 audio, but DTS, MP2 and
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uncompressed LPCM are allowed, too.<BR> <B>Read the <A
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HREF="cd-dvd.html#dvd">DVD section</A>!</B></LI>
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</UL>
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<P>Series of frames form independent groups in MPEG files. This means that you
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can cut/join an MPEG file with standard file tools (like <CODE>dd</CODE>,
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<CODE>cut</CODE>), and it remains completely functional.</P>
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<P>One important feature of MPGs is that they have a field to describe the
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aspect ratio of the video stream within. For example SVCDs have 480x480
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resolution video, and in the header that field is set to 4:3, so that it is
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played at 640x480. AVI files do not have this field, so they have to be
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rescaled during encoding or played with the <CODE>-aspect</CODE> option.</P>
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<H4><A NAME="avi">2.1.1.2 AVI files</A></H4>
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<P>Designed by Microsoft, <B>AVI (Audio Video Interleaved)</B> is a widespread
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multipurpose format currently used mostly for DivX and DivX4 video. It has
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many known drawbacks and shortcomings (for example in streaming). It
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supports one video stream and 0 to 99 audio streams. File size is limited to
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2GB, but there exists an extension allowing bigger files called
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<B>OpenDMS</B>. Microsoft currently strongly discourages its use and
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encourages ASF/WMV. Not that anybody cares.</P>
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<P>There is a hack that allows AVI files to contain an Ogg Vorbis audio
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stream, but makes them incompatible with standard AVI. MPlayer
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supports playing these files. Seeking is also implemented but severely
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hampered by badly encoded files with confusing headers. Unfortunately the
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only encoder currently capable of creating these files, NanDub, has this
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problem.</P>
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<P><B>Note:</B> DV cameras create raw DV streams that DV grabbing utilities
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convert to two different types of AVI files. The AVI will then contain either
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separate audio and video streams that MPlayer can play or the raw DV
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stream for which support is under development.</P>
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<P>There are two kinds of AVI files:</P>
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<UL>
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<LI><B>Interleaved:</B> Audio and video content is interleaved. This is the
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standard usage. Recommended and mostly used. Some tools create
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interleaved AVIs with bad sync. MPlayer detects these as
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interleaved, and this climaxes in loss of A/V sync, probably at seeking.
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These files should be played as non-interleaved (with the <CODE>-ni</CODE>
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option).</LI>
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<LI><B>Non-interleaved:</B> First comes the whole video stream, then the whole
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audio stream. It thus needs a lot of seeking, making playing from network or
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CD-Rom difficult.</LI>
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</UL>
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<P>MPlayer supports two kinds of timings for AVI files:</P>
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<UL>
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<LI><B>bps-based</B>: It is based on the bitrate/samplerate of the video/audio stream. This
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method is used by most players, including <A HREF="http://avifile.sourceforge.net">avifile</A>
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and Windows Media Player.
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Files with broken headers, and files created with VBR audio but not with a
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VBR-compliant encoder will result in A/V desync with this method (mostly at
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seeking).</LI>
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<LI><B>interleaving-based</B>: It does not use the bitrate value of the header, instead
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it uses the relative position of interleaved audio and video chunks, making
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badly encoded files with VBR audio playable.</LI>
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</UL>
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<P>Any audio and video codec is allowed, but note that VBR audio is not well
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supported by most players. The file format makes it possible to use VBR
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audio, but most players expect CBR audio, thus they fail with VBR. VBR is
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uncommon and the Microsoft AVI specs only describe CBR audio. Most AVI
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encoders/multiplexers create bad files when using VBR audio. There are only
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two known exceptions: NanDub and <A HREF="encoding.html">MEncoder</A>.</P>
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<H4><A NAME="asf">2.1.1.3 ASF/WMV files</A></H4>
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<P>ASF (active streaming format) comes from Microsoft. They developed two
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variants of ASF, v1.0 and v2.0. v1.0 is used by their media tools (Windows
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Media Player and Windows Media Encoder) and is very secret. v2.0 is published
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and patented :). Of course they differ, there is no compatibility at all (it
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is just another legal game). MPlayer supports only v1.0, as nobody has
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ever seen v2.0 files :). Note that ASF files nowadays come with the extension
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.WMA or .WMV.</P>
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<H4><A NAME="mov">2.1.1.4 QuickTime/MOV files</A></H4>
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<P>These formats were designed by Apple and can contain any codec, CBR or VBR.
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They usually have a .QT or .MOV extension. Ever since the MPEG4 group chose
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QuickTime as the recommended file format for MPEG4, their MOV files come with
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an
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.MPG or .MP4 extension (Interestingly the video and audio streams in these
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files are real MPG and AAC files. You can even extract them with the
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<CODE>-dumpvideo</CODE> and <CODE>-dumpaudio</CODE> options.).</P>
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<P><B>Note:</B> Most new QuickTime files use <B>Sorenson</B> video and QDesign
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Music audio. See our <A HREF="codecs.html#sorenson">Sorenson</A> codec
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section.</P>
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2002-08-20 00:33:04 +00:00
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<H4><A NAME="vivo">2.1.1.5 VIVO files</A></H4>
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<P>MPlayer happily demuxes VIVO file formats. The biggest disadvantage
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of the format is that it has no index block, nor a fixed packet size or sync
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bytes and most files lack even keyframes, so forget seeking!</P>
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<P>The video codec of VIVO/1.0 files is standard <B>h.263</B>. The video codec
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of VIVO/2.0 files is a modified, nonstandard <B>h.263v2</B>. The audio is the
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same, it may be <B>g.723</B> (standard), or <B>Vivo Siren</B>.</P>
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<P>See the <A HREF="codecs.html#vivo_video">VIVO video codec</A> and
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<A HREF="codecs.html#vivo_audio">VIVO audio codec</A> sections for installation
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instructions.</P>
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2002-08-20 00:33:04 +00:00
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<H4><A NAME="fli">2.1.1.6 FLI files</A></H4>
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<P><B>FLI</B> is a very old file format used by Autodesk Animator, but it is a
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common file format for short animations on the net. MPlayer demuxes
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and decodes FLI movies and is even able to seek within them (useful when
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looping with the <CODE>-loop</CODE> option). FLI files do not have keyframes,
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so the picture will be messy for a short time after seeking.</P>
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2002-08-20 00:33:04 +00:00
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<H4><A NAME="real">2.1.1.7 RealMedia (RM) files</A></H4>
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<P>Yes, MPlayer can read (demux) RealMedia (.rm) files. Seeking works,
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but you have to explicitly specify the <CODE>-forceidx</CODE> option
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(the format supports keyframes). Here are the lists of the supported
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<A HREF="codecs.html#realvideo">RealVideo</A>
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and <A HREF="codecs.html#realaudio">RealAudio</A> codecs.</P>
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<H4><A NAME="nuppelvideo">2.1.1.8 NuppelVideo files</A></H4>
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<P><A HREF="http://mars.tuwien.ac.at/~roman/nuppelvideo">NuppelVideo</A>
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is a TV grabber tool (AFAIK:). MPlayer can read its .NUV files (only
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NuppelVideo 5.0). Those files can contain uncompressed YV12, YV12+RTJpeg
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compressed, YV12 RTJpeg+lzo compressed, and YV12+lzo compressed frames.
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MPlayer decodes them all (and also <B>encodes</B> them with
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MEncoder to DivX/etc!). Seeking works.</P>
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<H4><A NAME="yuv4mpeg">2.1.1.9 yuv4mpeg files</A></H4>
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<P><A HREF="http://mjpeg.sourceforge.net">yuv4mpeg / yuv4mpeg2</A> is a file
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format used by the <A HREF="http://mjpeg.sf.net">mjpegtools programs</A>.
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You can grab, produce, filter or encode video in this format using these
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tools. The file format is really a sequence of uncompressed YUV 4:2:0
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images.</P>
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<H4><A NAME="film">2.1.1.10 FILM files</A></H4>
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<P>This format is used on old Sega Saturn CD-Rom games.</P>
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2002-08-20 00:33:04 +00:00
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<H4><A NAME="roq">2.1.1.11 RoQ files</A></H4>
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2002-02-08 13:56:36 +00:00
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<P>RoQ files are multimedia files used in some ID games such as Quake III and
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Return to Castle Wolfenstein.</P>
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2002-02-03 11:00:39 +00:00
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2002-10-18 17:57:05 +00:00
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<H4><A NAME="ogg">2.1.1.12 OGG/OGM files</A></H4>
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<P>This is a new file format from <A HREF="http://www.xiph.org">Xiphophorus</A>.
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It can contain any video or audio codec, CBR or VBR. You will need to
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have <CODE>libogg</CODE> and <CODE>libvorbis</CODE> installed
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2002-10-20 12:20:39 +00:00
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before compiling MPlayer to be able to play it.</P>
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2002-04-27 09:27:31 +00:00
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2002-10-20 11:34:06 +00:00
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<H4><A NAME="sdp">2.1.1.13 SDP files</A></H4>
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<P><A HREF="ftp://ftp.rfc-editor.org/in-notes/rfc2327.txt">SDP</A>
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is an IETF standard format for describing video and/or audio RTP streams.
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(The "<A HREF="http://www.live.com/mplayer/">LIVE.COM Streaming Media</A>"
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libraries are required.)</P>
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2002-11-13 05:13:51 +00:00
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<H4><A NAME="pva">2.1.1.14 PVA files</A></H4>
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<P>PVA is an MPEG-like format used by DVB TV boards' software (e.g.: MultiDec,
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WinTV) under Windows.</P>
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<P>The PVA specifications can be downloaded from the following address:
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<A HREF="http://www.technotrend.de/download/av_format_v1.pdf">http://www.technotrend.de/download/av_format_v1.pdf</A></P>
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2003-01-28 00:12:23 +00:00
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<H4><A NAME="gif">2.1.1.15 GIF files</A></H4>
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2003-01-28 01:33:58 +00:00
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<P>The <B>GIF</B> format is a common format for web graphics. There are two
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versions of the GIF spec, GIF87a and GIF89a. The main difference is that
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GIF89a allows for animation. MPlayer supports both formats through use
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of libungif or another libgif-compatible library. Non-animated GIFs will
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be displayed as single frame videos. (Use the <CODE>-loop</CODE> and
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2003-01-28 00:12:23 +00:00
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<CODE>-fixed-vo</CODE> options to display these longer.)</P>
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2003-01-28 01:33:58 +00:00
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<P>MPlayer currently does not support seeking in GIF files. GIF files do
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not necessarily have a fixed frame size, nor a fixed framerate. Rather,
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each frame is of independent size and is supposed to be positioned in a
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certain place on a field of fixed-size. The framerate is controlled by
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an optional block before each frame that specifies the next frame's delay
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2003-01-28 00:12:23 +00:00
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in centiseconds.</P>
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<P>Standard GIF files contain 24-bit RGB frames with at most an 8-bit
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2003-01-28 01:33:58 +00:00
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indexed pallete. These frames are usually LZW-compressed, although
|
2003-01-28 00:12:23 +00:00
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some GIF encoders produce uncompressed frames to avoid patent issues
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with LZW compression.</P>
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2003-01-28 01:33:58 +00:00
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<P>If your distribution does not come with libungif, download a copy from the
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<A HREF="http://prtr-13.ucsc.edu/~badger/software/libungif/index.shtml">libungif homepage</A>.
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For detailed technical information, have a look at the
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<A HREF="http://www.w3.org/Graphics/GIF/spec-gif89a.txt">GIF89a specification</A>.</P>
|
2003-01-28 00:12:23 +00:00
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2002-08-20 00:33:04 +00:00
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<H3><A NAME="audio_formats">2.1.2 Audio formats</A></H3>
|
2001-11-06 17:04:56 +00:00
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|
2002-10-20 12:20:39 +00:00
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<P>MPlayer is a <B>Movie</B> and not a <B>Media</B> player, although
|
2002-03-28 17:30:46 +00:00
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it can play some audio file formats (they are listed in the sections below).
|
2002-10-20 12:20:39 +00:00
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|
This is not a recommended usage of MPlayer, you better use
|
2002-03-28 17:30:46 +00:00
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<A HREF="http://www.xmms.org">xmms</A>.</P>
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|
2002-08-20 00:33:04 +00:00
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<H4><A NAME="mp3">2.1.2.1 MP3 files</A></H4>
|
2002-03-27 00:54:45 +00:00
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|
2002-10-20 12:20:39 +00:00
|
|
|
<P>You may have problems playing certain MP3 files that MPlayer will
|
2002-08-10 20:26:43 +00:00
|
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|
misdetect as MPEGs and play incorrectly or not at all. This cannot be fixed
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|
|
without dropping support for certain broken MPEG files and thus will remain
|
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|
like this for the foreseeable future. The <CODE>-demuxer</CODE> flag
|
2002-08-20 00:36:58 +00:00
|
|
|
described in the man page may help you in these cases.</P>
|
2001-11-06 17:04:56 +00:00
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|
2002-03-28 17:30:46 +00:00
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|
2002-08-20 00:33:04 +00:00
|
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|
<H4><A NAME="wav">2.1.2.2 WAV files</A></H4>
|
2002-03-28 17:30:46 +00:00
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|
2002-10-22 20:45:51 +00:00
|
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|
<H4><A NAME="ogg_vorbis">2.1.2.3 OGG/OGM files (Vorbis)</A></H4>
|
2002-03-28 17:30:46 +00:00
|
|
|
|
2002-04-27 09:27:31 +00:00
|
|
|
<P>Requires properly installed <CODE>libogg</CODE> and
|
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|
|
<CODE>libvorbis</CODE>.</P>
|
2002-03-28 17:30:46 +00:00
|
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|
2002-08-20 00:33:04 +00:00
|
|
|
<H4><A NAME="wma">2.1.2.4 WMA/ASF files</A></H4>
|
2002-03-28 17:30:46 +00:00
|
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|
2002-08-20 00:33:04 +00:00
|
|
|
<H4><A NAME="mp4">2.1.2.5 MP4 files</A></H4>
|
2002-03-28 17:30:46 +00:00
|
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|
2002-11-13 05:13:51 +00:00
|
|
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|
|
<H4><A NAME="cdda">2.1.2.6 CD audio</A></H4>
|
|
|
|
|
|
|
|
|
|
<P>MPlayer can use <B>cdparanoia</B> (lib) to play CDDA (Audio CD).
|
|
|
|
|
The scope of this section does not contain enumerating cdparanoia's
|
|
|
|
|
features.</P>
|
|
|
|
|
|
|
|
|
|
<P>See the man page's <CODE>-cdda</CODE> option which can be used to
|
|
|
|
|
pass options to cdparanoia.</P>
|
|
|
|
|
|
2003-01-07 00:02:02 +00:00
|
|
|
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|
|
|
|
<H4><A NAME="xmms">2.1.2.7 XMMS</A></H4>
|
|
|
|
|
|
|
|
|
|
<P>MPlayer can use XMMS input plugins to play many file formats. There are
|
|
|
|
|
plugins for SNES game tunes, SID tunes (from Commodore 64), many Amiga
|
|
|
|
|
formats, .xm, .it, VQF, musepack, Bonk, shorten and many others. You can find
|
|
|
|
|
them at the
|
|
|
|
|
<A HREF="http://www.xmms.org/plugins_input.html">XMMS input plugin page</A>.</P>
|
|
|
|
|
|
|
|
|
|
<P>For this feature you need to have XMMS and compile MPlayer with
|
|
|
|
|
<CODE>./configure --enable-xmms</CODE>. If that does not work, you might need
|
|
|
|
|
to set the XMMS plugin and library path explicitly by way of the
|
|
|
|
|
<CODE>--with-xmmsplugindir</CODE> and <CODE>--withxmmslibdir</CODE>
|
|
|
|
|
switches.</P>
|
|
|
|
|
|
2001-11-06 17:04:56 +00:00
|
|
|
</BODY>
|
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</HTML>
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