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authordiego <diego@b3059339-0415-0410-9bf9-f77b7e298cf2>2003-02-10 00:00:00 +0000
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-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<HTML>
-
-<HEAD>
- <TITLE>FAQ - 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">
- <STYLE TYPE="text/css">
- dt {
- font-weight : bold;
- }
- </STYLE>
-</HEAD>
-
-<BODY>
-
-
-<H1><A NAME="faq">5. FAQ</A></H1>
-
-<UL>
- <LI><A HREF="#compilation">5.1 Compilation</A></LI>
- <LI><A HREF="#general">5.2 General questions</A></LI>
- <LI><A HREF="#playback">5.3 Playback problems</A></LI>
- <LI><A HREF="#driver">5.4 Video/audio driver problems (vo/ao)</A></LI>
- <LI><A HREF="#dvd">5.5 DVD playback</A></LI>
- <LI><A HREF="#features">5.6 Feature requests</A></LI>
- <LI><A HREF="#encoding">5.7 Encoding</A></LI>
-</UL>
-
-
-<H2><A NAME="compilation">5.1 Compilation</A></H2>
-
-<DL>
-
- <DT>Q: Compilation stops with an error message similar to this one:
- <PRE>
- In file included from mplayer.c:34:
- mw.h: In function `mplMainDraw':
- mw.h:209: Internal compiler error in print_rtl_and_abort, at flow.c:6458
- Please submit a full bug report,
- with preprocessed source if appropriate.
- </PRE>
- </DT>
- <DD>A: This is a known problem of gcc 3.0.4, upgrade to 3.1 to solve the
- problem. How to install gcc is described in the
- <A HREF="users_against_developers.html#gcc">gcc 2.96</A> section.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Configure ends with this text, and MPlayer won't compile!<BR>
- <CODE>"Your gcc does not support even i386 for '-march' and '-mcpu'."</CODE>
- </DT>
- <DD>A: Your gcc isn't installed correctly, check the <CODE>config.log</CODE>
- file for details.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: What does "No such file or directory" mean?</DT>
- <DD>A: Probably there is no such file or directory.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: What's the problem with gcc 2.96?</DT>
- <DD>A: <B>We strongly discourage the use of gcc 2.96!</B><BR>
- Read <A HREF="users_against_developers.html#gcc">this</A> document for
- details about why Red Hat released gcc 2.96 and what the problems are all
- about. If you still really really want to use it, be sure to get the latest
- release and give the <CODE>--disable-gcc-checking</CODE> option to
- configure. Remember that you are on your own from this point. Do <B>not</B>
- report bugs, do <B>not</B> ask for help on the mailing lists. We will
- <B>not</B> provide any support in case you run into problems.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Great, I have gcc 3.0.1 from Red Hat/Mandrake, then I'm fine!</DT>
- <DD>A: No, since there have been/are issues with these compilers as well.
- To check the status of current compilers' MPlayer support, see the
- <A HREF="documentation.html#installation">Installation</A> section.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I tried to compile MPlayer, but I got this output:
- <PRE>
- In file included from /usr/include/g++-v3/bits/std_cwchar.h:42,
- from /usr/include/g++-v3/bits/fpos.h:40,
- from /usr/include/g++-v3/bits/char_traits.h:40,
- from /usr/include/g++-v3/bits/std_string.h:41,
- from /usr/include/g++-v3/string:31,
- from libwin32.h:36,
- from DS_AudioDecoder.h:4,
- from DS_AudioDec.cpp:5:
- /usr/include/wchar.h: In function Long long int wcstoq(const wchar_t*,
- wchar_t**, int)':
- /usr/include/wchar.h:514: cannot convert `const wchar_t* __restrict' to
- `const
- </PRE>
- </DT>
- <DD>A: Upgrade your glibc to the latest release. On Mandrake, use 2.2.4-8mdk.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: ... gcc 2.96 ... (Yes, some people are STILL flaming about gcc 2.96!)</DT>
- <DD>A: Quoted from a
- <A HREF="http://www.mplayerhq.hu/pipermail/mplayer-users/2001-October/005351.html">mail</A>
- A'rpi sent to the
- <A HREF="http://mplayerhq.hu/pipermail/mplayer-users/">mplayer-users</A>
- list (the word 'ideg' is described below):
- <BLOCKQUOTE>
- <P>And we have idegs. And our idegcounter overflowed again and again.</P>
-
- <P>Unfortunately MPlayer is out of our control. It's used by lamers, Linux
- users who can't even use Windows, and never tried to compile a kernel. They
- installed (with default options) Mandrake or Red Hat or SuSE, and without
- RTFM'ing they send messages saying 'it doesn't work! help me! please! i'm
- new to Linux! help! oh! help me!'. We can't stop them, but at least we try
- to force them to RTFM and to read the messages of ./configure and MPlayer.</P>
-
- <P>And you clever guys come and flame us with gcc 2.96 and binary packages.
- Instead of helping users or making patches to help solve problems.</P>
-
- <P>Half of our spare/free time is spent by answering silly mails here and
- making newer tricks and checks to configure to avoid such mails.</P>
-
- <P>And there is a balance. On the one side are you, clever guys, saying we
- are very bad because we don't like buggy gcc 2.96, and on the other side
- there are the 'new to Linux' guys who are showing us gcc 2.96 is buggy.</P>
-
- <P>Conclusion: We can't be good. Half the people will always say we are bad.</P>
-
- <P>Maybe we should close the project, make it closed source, commercial, and
- provide install support for it. then we could leave current work, so
- development could go faster, and we could earn lots of money with it and buy
- a big house, etc etc. Do you really want it? It seems.</P>
- </BLOCKQUOTE>
- </DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: SDL output doesn't work or compile. The problem is ...</DT>
- <DD>A: It was tested to work with SDL 1.2.x and may run on SDL 1.1.7+.
- It does <B>not</B> work with any previous version. So if you choose to use
- such a version, you are on your own.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I am still having trouble compiling with SDL support. gcc says
- something about "undefined reference to `SDL_EnableKeyRepeat'". What
- now?</DT>
- <DD>A: Where did you install the SDL library? If you installed in /usr/local
- (the default) then edit the top level config.mak and add
- "-L/usr/local/lib" after "X_LIBS=". Now type make. You're done!</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: It doesn't compile, and it misses uint64_t inttypes.h and similar
- things ...</DT>
- <DD>A: Copy etc/inttypes.h to the MPlayer directory
- (<CODE>cp etc/inttypes.h .</CODE>) and try again ...</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I have Linux running on a Pentium III but <CODE>./configure</CODE>
- doesn't detect SSE ...</DT>
- <DD>A: Only kernel versions 2.4.x support SSE (or try 2.2.19 or newer, but
- be prepared for problems).</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I have a G200/G400, how do I compile/use the mga_vid driver?</DT>
- <DD>A: Read the <A HREF="video.html#mga_vid">mga_vid documentation</A>.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Are there rpm/deb/... packages of MPlayer?</DT>
- <DD>A: You can make a .deb package for yourself, check the
- <A HREF="documentation.html#debian">Debian packaging</A> section.
- There are links to official Red Hat RPM packages available on our
- <A HREF="http://www.mplayerhq.hu/homepage/dload.html">download page</A>.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: During 'make', MPlayer complains about X11 libraries. I don't
- understand, I DO have X installed!?</DT>
- <DD>A: ... but you don't have the X development package installed. Or not
- correctly. It's called XFree86-devel* under Red Hat, and xlibs-dev under
- Debian. Also check if the <CODE>/usr/X11</CODE> and <CODE>/usr/include/X11</CODE>
- symlinks exist (this can be a problem on Mandrake systems). They can be
- created with these commands:<BR>
- &nbsp;&nbsp;&nbsp;&nbsp;<CODE>$ ln -sf /usr/X11R6 /usr/X11</CODE><BR>
- &nbsp;&nbsp;&nbsp;&nbsp;<CODE>$ ln -sf /usr/X11R6/include/X11 /usr/include/X11</CODE><BR>
- Your distribution may differ from the
- <A HREF="http://www.pathname.com/fhs/">Filesystem Hierarchy Standard</A>.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I can't compile SVGAlib. I'm using kernel 2.3/2.4 ...</DT>
- <DD>A: You have to edit SVGAlib's Makefile.cfg and comment
- <CODE>BACKGROUND = y</CODE> out.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I compiled MPlayer with libdvdcss/libdivxdecore support, but when
- I try to start it, it says:<BR>
- <CODE>&gt; error while loading shared libraries: lib*.so.0: cannot load
- shared object file: No such file or directory</CODE><BR>
- I checked up on the file and it IS there in <CODE>/usr/local/lib</CODE> ...</DT>
- <DD>A: Add <CODE>/usr/local/lib</CODE> to <CODE>/etc/ld.so.conf</CODE> and run
- <CODE>ldconfig</CODE>.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Hmm, strange. When loading the mga_vid.o kernel module, I found this in
- the logs:<BR>
- <CODE>Warning: loading mga_vid.o will taint the kernel: no license</CODE></DT>
- <DD>A: The latest kernel modutils require a flag indicating the license
- (mainly to avoid kernel hackers debugging closed source drivers).
- Upgrade your kernel, modutils and MPlayer.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: When compiling MEncoder, it segfaults at linking!</DT>
- <DD>A: This is a linker problem. Upgrading binutils should help (2.11.92.*
- or newer should be good). Since it is not our fault, please do <B>not</B>
- report!</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: MPlayer dies with segmentation fault upon pthread check!</DT>
- <DD>A: chmod 644 /usr/lib/libc.so</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I'd like to compile MPlayer on Minix!</DT>
- <DD>A: Me too. :)</DD>
-
-</DL>
-
-
-<H2><A NAME="general">5.2 General questions</A></H2>
-
-<DL>
-
- <DT>Q: How do I create a proper patch for MPlayer?</DT>
- <DD>A: We made a <A HREF="tech/patches.txt">short document</A> describing
- all the necessary details. Please follow the instructions.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: How can I support MPlayer development?</DT>
- <DD>A: We are more than happy to accept your hardware and software
- <A HREF="http://www.mplayerhq.hu/homepage/donations.html">donations</A>.
- They help us in continuously improving MPlayer.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: How can I become an MPlayer developer?</DT>
- <DD>A: We always welcome coders and documenters. Read the
- <A HREF="tech/">technical documentation</A> to get a first grasp. Then you
- should subscribe to the
- <A HREF="http://mplayerhq.hu/mailman/listinfo/mplayer-dev-eng">mplayer-dev-eng</A>
- mailing list and start coding.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Can I run multiple instances of MPlayer?</DT>
- <DD>A: Yes. Some video out drivers like xv, dga or (x)mga are exclusive, some
- are exclusive in combination with certain graphics boards and drivers. You
- will not be able to run more than one instance of MPlayer with one of those
- video out drivers. To a lesser degree this also applies to audio drivers.
- Not all allow playback of multiple streams on the same device.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: There is a timer in the upper left corner. How can I get rid of it?</DT>
- <DD>A: Press <CODE>o</CODE> and try the <CODE>-osdlevel</CODE> option.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: The <CODE>-xy</CODE> or <CODE>-fs</CODE> option doesn't work with the
- x11 driver (<CODE>-vo x11</CODE>) ...</DT>
- <DD>A: It does, but you have to explicitly specify software scaling (very
- slow) with the <CODE>-zoom</CODE> option. You better use XF86VidMode
- support: You must specify the <CODE>-vm</CODE> and the <CODE>-fs</CODE>
- option, and you're done. Make sure you have the right modelines in your
- XF86Config file, and try to make the <A HREF="video.html#dga">DGA driver</A>
- and <A HREF="video.html#sdl">SDL's DGA driver</A> work for you.
- It's much faster. If SDL's DGA works, use that, it'll be even faster.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: What is the meaning of the numbers on the status line?</DT>
- <DD>A: Example:
- <CODE>A: 2.1 V: 2.2 A-V: -0.167 ct: 0.042 57/57 41% 0% 2.6% 0 4 49%</CODE>
- <UL>
- <LI>A: audio position in seconds</LI>
- <LI>V: video position in seconds</LI>
- <LI>A-V: audio-video difference in seconds (delay)</LI>
- <LI>ct: total A-V sync correction done</LI>
- <LI>frames played (counting from last seek)</LI>
- <LI>frames decoded (counting from last seek)</LI>
- <LI>video codec cpu usage in percent (for slices and DR this includes
- video_out)</LI>
- <LI>video_out cpu usage</LI>
- <LI>audio codec cpu usage in percent</LI>
- <LI>frames needed to drop to maintain A-V sync</LI>
- <LI>current level of image postprocessing (when using <CODE>-autoq</CODE>)</LI>
- <LI>current cache size used (around 50% is normal)</LI>
- </UL>
- Most of them are for debug purposes and will be removed at some point.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: What if I don't want them to appear?</DT>
- <DD>A: Use the <CODE>-quiet</CODE> option and read the man page.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Why is video_out cpu usage zero (0%) for some files?</DT>
- <DD>A1: It's not zero, but it's called from the codec and thus cannot be
- measured separately. You should try to play the file using
- <CODE>-vo null</CODE> and then <CODE>-vo ...</CODE> and check the
- difference to see the video_out speed.</DD>
- <DD>A2: You are using Direct Rendering,
- where the codec renders to the video memory itself. In this case, the
- decoding percentage contains the display percentage, too.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: There are error messages about file not found
- <CODE>/usr/lib/win32/</CODE> ...</DT>
- <DD>A: Download the Win32 codecs from our
- <A HREF="http://www.mplayerhq.hu/MPlayer/releases/codecs/">codecs page</A>
- (avifile's codec package has a different DLL set) and install it.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Are there any mailing lists on MPlayer?</DT>
- <DD>A: Yes. See the bottom of the info page on
- <A HREF="http://www.mplayerhq.hu/homepage/info.html">our homepage</A> to
- subscribe.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I've found a nasty bug when I tried to play my favorite video!
- Who should I inform?</DT>
- <DD>A: Please read the <A HREF="bugreports.html">bug reporting guidelines</A>
- and follow the instructions.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I have problems playing files with the ... codec. Can I use them?</DT>
- <DD>A: Check the
- <A HREF="http://www.mplayerhq.hu/DOCS/codecs-status.html">codec status</A>,
- if it doesn't contain your codec, read the
- <A HREF="codecs.html">codec documentation</A>, especially the
- <A HREF="codecs.html#importing">codec importing HOWTO</A> and contact us.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Umm, what is "IdegCounter"?</DT>
- <DD>A: A combination of a Hungarian and an English word. "Ideg" in Hungarian
- means the same as "nerve" in English, and is pronounced as something like
- "ydaegh". It was first used to measure the nervousness of A'rpi, after some
- (umm) "mysterious" disappearance of CVS code ;)</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: And what is "Faszom(C)ounter"?</DT>
- <DD>A: "Fasz" is a Hungarian word you don't want to know, the others are
- connected to the perverted minds of the MPlayer developers.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: LIRC doesn't work, because ...</DT>
- <DD>A: Are you sure you are using <CODE>mplayer</CODE> instead of
- <CODE>mplayer_lirc</CODE>? Note that it was <CODE>mplayer_lirc</CODE> for a
- long time, including the 0.60 release, but it was recently changed back to
- <CODE>mplayer</CODE>.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Subtitles are very nice, the most beautiful I've ever seen, but they
- slow down playing! I know it's unlikely ...</DT>
- <DD>A: After running <CODE>./configure</CODE>, edit <CODE>config.h</CODE> and
- replace <CODE>#undef FAST_OSD</CODE> with <CODE>#define FAST_OSD</CODE>.
- Then recompile.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: The onscreen display (OSD) is flickering!</DT>
- <DD>A: You use a vo driver with single buffering (x11,xv). With xv,
- use the <CODE>-double</CODE> option. Also try <CODE>-vop expand</CODE></DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: What exactly is this libavcodec thing?</DT>
- <DD>A: See the <A HREF="codecs.html#libavcodec">libavcodec section</A>.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: But configure tells me "Checking for libavcodec ... no"!</DT>
- <DD>A: You need to get libavcodec from FFmpeg's CVS. Read the instructions in
- the <A HREF="codecs.html#libavcodec">libavcodec section</A>.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Icewm's taskbar keeps covering the movie in fullscreen mode!</DT>
- <DD>A: This shouldn't happen anymore, if it still does use the
- <CODE>-fstype layer</CODE> option and report it to the
- <A HREF="http://mplayerhq.hu/pipermail/mplayer-users/">mplayer-users</A>
- mailing list.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I can't access the GUI menu. I press right click, but I can't access
- any menu items!</DT>
- <DD>A: Are you using FVWM? Try the following:<BR>
- Start -&gt; Settings -&gt; Configuration -&gt; Base Configuration<BR>
- Set "Use Applications position hints" to "Yes".</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: How can I run MPlayer in the background?</DT>
- <DD>A: Use: <CODE>mplayer &lt;options&gt; &lt;filename&gt; &lt; /dev/null &amp;</CODE></DD>
-
-</DL>
-
-
-<H2><A NAME="playback">5.3 Playback problems</A></H2>
-
-<DL>
-
- <DT>Q: I can play certain AVIs but I get no sound and this kind of error:
- <PRE>
- Detected audio codec: [divx] afm:4 (DivX audio (WMA))
- Requested audio codec family [divx] (afm=4) not available (enable it at
- compile time!)
- </PRE>
- </DT>
- <DD>A: Probably the audio uses a codec not natively supported by
- MPlayer. Install the Win32 codec package as described in the README
- or in the <A HREF="documentation.html#installation">Installation</A> section.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: ... works with avifile/aviplay but doesn't with MPlayer.</DT>
- <DD>A: MPlayer is not avifile.
- The only common thing between these players is the Win32 DLL loader.
- The codecs (DLL) set, synchronization, demultiplexing etc is totally
- different and shouldn't be compared.
- If something works with aviplay it doesn't mean that MPlayer will
- work and vice versa.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Audio goes out of sync playing an AVI file.</DT>
- <DD>A: Try the <CODE>-bps</CODE> or <CODE>-nobps</CODE> option. If it does not
- improve, read <A HREF="bugreports.html">this</A> and upload the file to FTP.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: MPlayer exits with some error when using l3codeca.acm.</DT>
- <DD>A: Check <CODE>ldd /usr/local/bin/mplayer</CODE> output. If it contains<BR>
- &nbsp;&nbsp;&nbsp;&nbsp;<CODE>libc.so.6 =&gt; /lib/libc.so.6 (0x4???????)</CODE><BR>
- where "?" is any number then it's OK, the error is not here. If it is:<BR>
- &nbsp;&nbsp;&nbsp;&nbsp;<CODE>libc.so.6 =&gt; /lib/libc.so.6 (0x00??????)</CODE><BR>
- then there is a problem with your kernel/libc. Maybe you are using some
- security patches (for example Solar Designer's OpenWall patch) which
- forces loading libraries to very low addresses.
- Because l3codeca.acm is a non-relocatable DLL, it must be loaded to
- 0x00400000, we can't change this. You should use a non-patched kernel,
- or use MPlayer's <CODE>-afm 1</CODE> option to disable using
- l3codeca.acm.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: My computer plays M$ DivX AVIs with resolutions ~ 640x300 and stereo
- mp3 sound too slow. When I use -nosound option, everything is OK (but
- quiet).</DT>
- <DD>A: Your machine is too slow or your soundcard driver is broken. Consult
- the documentation to see if you can improve performance.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: MPlayer dies with "MPlayer interrupted by signal 4 in module:
- decode_video".</DT>
- <DD>A: Try running MPlayer on the machine you compiled on. Or recompile
- with runtime CPU detection
- (<CODE>./configure --enable-runtime-cpudetection</CODE>). Don't
- use MPlayer on a CPU different from the one it was compiled on,
- without using the feature mentioned just now.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I have problems with [your window manager] and fullscreen
- xv/xmga/sdl/x11 modes ...</DT>
- <DD>A: Read the <A HREF="bugreports.html">bug reporting guidelines</A> and
- send us a proper bug report.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I got this playing MPEG files: Can't find codec for video format
- 0x10000001!</DT>
- <DD>A: You have an old version of codecs.conf at <CODE>~/.mplayer/</CODE>.
- Upgrade it from <CODE>/etc/</CODE>.<BR>
- <B>OR</B> you have the <CODE>vc=</CODE> option or something similar in your
- config file(s).</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: When starting MPlayer under KDE I just get a black screen and nothing
- happens. After about one minute the video starts playing.</DT>
- <DD>A: The KDE arts sound daemon is blocking the sound device. Either wait
- until the video starts or disable the arts-daemon in kontrol center. If you
- want to use arts sound, specify audio output via our native arts audio
- driver (<CODE>-ao arts</CODE>). If it fails or isn't compiled in, try SDL
- (<CODE>-ao sdl</CODE>) and make sure your SDL can handle arts sound. Yet
- another option is to start MPlayer with artsdsp.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I have an AVI that produces a gray screen when played with
- <CODE>-vc odivx</CODE> and a green one with <CODE>-vc divx4</CODE>.</DT>
- <DD>A: It's not a DivX file, but an M$ MPEG4v3. Update your codecs.conf.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: When I play this movie I get video-audio desync and/or MPlayer crashes
- with the following message:<BR>
- <CODE>DEMUXER: Too many (945 in 8390980 bytes) video packets in the buffer!</CODE></DT>
- <DD>A: This can have multiple reasons.
- <UL>
- <LI>Your CPU <B>and/or</B> video card <B>and/or</B> bus is too slow.
- MPlayer displays a message if this is the case (and the dropped
- frames counter goes up fast).</LI>
- <LI>If it is an AVI, maybe it has bad interleaving. Try the
- <CODE>-ni</CODE> option.</LI>
- <LI>Your sound driver is buggy, or you use ALSA 0.5 with <CODE>-ao oss</CODE>.
- See the <A HREF="sound.html">sound card section</A>.</LI>
- <LI>The AVI has a bad header, try the <CODE>-nobps</CODE> option, and/or
- <CODE>-mc 0</CODE>.</LI>
- </UL></DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I have an MJPEG file which works with other players but displays only a
- black image in MPlayer.</DT>
- <DD>A: Disable the Windows DLL in <CODE>codecs.conf</CODE>, or use the
- <CODE>-vc ffmjpeg</CODE> option (compile MPlayer with libavcodec for this
- to work).</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: When I try to grab from my tuner, it works, but colors are strange.
- It's OK with other applications.</DT>
- <DD>A: Your card probably misreports its colorspace capacity. Try with YUY2
- instead of default YV12 (see the <A HREF="documentation.html#tv">TV input
- documentation</A>).</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: When I start playing, I get this message but everything seems fine:<BR>
- <CODE>Linux RTC init: ioctl (rtc_pie_on): Permission denied</CODE></DT>
- <DD>A: You need root privileges or a
- specially set up kernel to use the new timing code. For details see the
- <A HREF="documentation.html#rtc">RTC section</A> of the documentation.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I have A/V sync problems. Some of my AVIs play fine, but some play with
- double speed!</DT>
- <DD>A: You have a buggy sound card/driver. Most likely it's fixed at 44100Hz,
- and you try to play a file which has 22050Hz audio. Try the resample audio
- plugin.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: All the WMV (or other..) files I play create a green/gray window and
- there is only sound! MPlayer prints:<BR>
- <CODE>Detected video codec: [null] drv:0 (NULL codec (no decoding))</CODE></DT>
- <DD>A: Update your <CODE>codecs.conf</CODE>.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I get very strange percentage values (way too big) while playing files
- on my notebook.</DT>
- <DD>A: It's an effect of the power management / power saving system of your
- notebook (BIOS, not kernel). Plug the external power connector in
- <B>before</B> you power on your notebook. You can also try whether
- <A HREF="http://www.brodo.de/cpufreq/">cpufreq</A> (a SpeedStep interface
- for Linux) helps you.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: The audio/video gets totally out of sync when I run MPlayer as root on
- my notebook. It works normal when i run it as a user.</DT>
- <DD>A: This is again a power management effect (see above). Plug the external
- power connector in <B>before</B> you power on your notebook or use the
- <CODE>-nortc</CODE> option.</DD>
-
-</DL>
-
-
-<H2><A NAME="driver">5.4 Video/audio driver problems (vo/ao)</A></H2>
-
-<DL>
-
- <DT>Q: I have no sound when playing a video and get error messages similar to
- this one:
- <PRE>
- AO: [oss] 44100Hz 2ch Signed 16-bit (Little-Endian)
- audio_setup: Can't open audio device /dev/dsp: Device or resource busy
- couldn't open/init audio device -&gt; NOSOUND
- Audio: no sound!!!
- Start playing...
- </PRE>
- </DT>
- <DD>A: Are you running KDE or GNOME with the ARTS or ESD sound daemon? Try
- disabling the sound daemon or use the <CODE>-ao arts</CODE> or
- <CODE>-ao esd</CODE> option to make MPlayer use ARTS or ESD.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: What about the DGA driver? I can't find it!</DT>
- <DD>A: <CODE>./configure</CODE> autodetects your DGA driver. If
- <CODE>-vo help</CODE> doesn't show DGA, then there's a problem with your X
- installation. Try <CODE>./configure --enable-dga</CODE> and read the
- <A HREF="video.html#dga">documentation</A>. Alternatively, try SDL's DGA
- driver with the <CODE>-vo sdl:dga</CODE> option.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: OK, <CODE>-vo help</CODE> shows DGA driver, but it complains about
- permissions. Help me!</DT>
- <DD>A: It works only if running as root! It's a DGA limitation.
- You should become root (<CODE>su -</CODE>), and try again.
- Another solution is making MPlayer SUID root, but it's
- <B>not recommended!</B><BR>
- &nbsp;&nbsp;&nbsp;&nbsp;<CODE>chown root /usr/local/bin/mplayer</CODE><BR>
- &nbsp;&nbsp;&nbsp;&nbsp;<CODE>chmod 755 /usr/local/bin/mplayer</CODE><BR>
- &nbsp;&nbsp;&nbsp;&nbsp;<CODE>chmod +s /usr/local/bin/mplayer</CODE><BR>
- <BLOCKQUOTE>
- <B>Warning: security risk</B><BR>
- This is a <B>big</B> security risk! <B>Never</B> do this on a server or
- on a computer that you do not control completely because other users can
- gain root privileges through SUID root MPlayer. <B>You have been
- warned.</B>
- </BLOCKQUOTE>
- </DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: When using Xvideo, my Voodoo 3/Banshee says:<BR>
- <CODE>X Error of failed request: BadAccess (attempt to access private
- resource denied)<BR>
- &nbsp;&nbsp;Major opcode of failed request: 147 (MIT-SHM)<BR>
- &nbsp;&nbsp;Minor opcode of failed request: 1 (X_ShmAttach)<BR>
- &nbsp;&nbsp;Serial number of failed request: 26<BR>
- &nbsp;&nbsp;Current serial number in output stream:27</CODE></DT>
- <DD>A: The "tdfx" driver in XFree86 4.0.2/4.0.3 had this bug. This was solved
- by <A HREF="http://www.xfree86.org/cvs/changes_4_1.html">bugfix #621 of the
- XFree86 4.1.0 CVS log</A>. So upgrade to XFree86 4.1.0 or later.
- Alternatively, either download (at least) DRI version 0.6 from the
- <A HREF="http://dri.sourceforge.net">DRI homepage</A>, or use CVS DRI.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: OpenGL (<CODE>-vo gl</CODE>) output doesn't work (hang/black window/X11
- errors/...).</DT>
- <DD>A: Your OpenGL driver doesn't support dynamic texture changes
- (glTexSubImage). It's known not to work with nVidia's binary mess.
- It's known to work with Utah-GLX/DRI and Matrox G400 cards. Also with
- DRI and Radeon cards. It won't work with DRI and other cards.
- it will not work with 3DFX cards because of the 256x256 texture size limit.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I have an nVidia TNT/TNT2 card, and I have a band with strange colors,
- right under the movie! Whose fault is this?</DT>
- <DD>A: This is a bug of nVidia's binary X driver. These bugs appear ONLY with
- the TNT/TNT2 cards, and we can't do anything about it. To fix the problem,
- upgrade to the latest nVidia binary driver version. If still bad, complain
- to nVidia!</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I have an nVidia XYZ card, and when I click on the GUI's display window
- to toggle displaying the GUI panel, a black square appears where I clicked.
- I have the newest driver.</DT>
- <DD>A: Yes, nVidia corrected a previous bug (above), and introduced a new one.
- Let's congratulate them. UPDATE: According to
- <A HREF="users_against_developers.html#nvidia">nVidia</A>, this has already
- been fixed.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: When I use the GUI with SDL video output, a second video window is
- created.</DT>
- <DD>A: Known, don't use SDL for the GUI yet.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Oh the world is cruel ...! SDL has only <CODE>x11</CODE> target, but
- not <CODE>xv</CODE>!</DT>
- <DD>A: Try that <CODE>x11</CODE> target again. Now try
- <CODE>-vo x11 -fs -zoom</CODE>. See the difference? No?! OK, here comes the
- enlightenment: SDL's <CODE>x11</CODE> target uses xv when available, you
- don't have to worry about it ... Note: you can force/disable Xv via SDL
- using <CODE>-forcexv</CODE> and <CODE>-noxv</CODE></DD>
-
-</DL>
-
-
-<H2><A NAME="dvd">5.5 DVD playback</A></H2>
-
-<DL>
-
- <DT>Q: What about DVD navigation?</DT>
- <DD>A: Support for dvdnav in MPlayer is currently broken, normal playback
- does work, though. If you want to have fancy menus, you will have to use
- another player like <A HREF="http://xine.sourceforge.net">xine</A> or
- <A HREF="http://www.dtek.chalmers.se/groups/dvd/">Ogle</A>. If you care
- about DVD navigation, send a <A HREF="tech/patches.txt">patch</A>.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: While playing a DVD, I encountered this error:<BR>
- <CODE>mplayer: ifo_read.c:1143: ifoRead_C_ADT_internal: Assertion
- nfo_length / sizeof(cell_adr_t) &gt;= c_adt-&gt;nr_of_vobs' failed.</CODE></DT>
- <DD>A: This is a known libdvdread 0.9.1/0.9.2 bug. Use <B>libmpdvdkit2</B>,
- which is present in MPlayer source, and used by default.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Can I compile libdvdread and libdvdcss on my sweet SPARC under
- Solaris?</DT>
- <DD>A: Who knows ... It's said to work, so please test it and send feedback.
- Refer to the documentation of libdvdread and its homepage as well. We're not
- the authors of libdvdread. Use <B>libmpdvdkit2</B>, which is present in
- MPlayer source, and used by default.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: What about subtitles? Can MPlayer display them?</DT>
- <DD>A: Yes. See the <A HREF="cd-dvd.html#dvd">DVD chapter</A> of the
- documentation.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: How can I set the region code of my DVD-drive? I don't have
- Windows!</DT>
- <DD>A: Use the
- <A HREF="http://www.linuxtv.org/download/dvd/dvd_disc_20000215.tar.gz">regionset tool</A>.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Do I need to be (setuid) root/setuid fibmap_mplayer to be able to play
- a DVD?</DT>
- <DD>A: No, only for old-style DVD support. However you must have
- the proper rights on the DVD device entry (in <CODE>/dev/</CODE>).</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Where can I get libdvdread and libdvdcss packages?</DT>
- <DD>A: You don't need to. Use <B>libmpdvdkit2</B>, which is present in the
- MPlayer source, and used by default. You can get the mentioned packages
- from the
- <A HREF="http://www.dtek.chalmers.se/groups/dvd/">Ogle site</A>.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Is it possible to play/encode only selected chapters?</DT>
- <DD>A: Yes, try the <CODE>-chapter</CODE> option.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: My DVD playback is sluggish!</DT>
- <DD>A: Use the <CODE>-cache</CODE> option (described in the man page)
- and try enabling DMA for the DVD drive with the hdparm tool (described in
- the <A HREF="cd-dvd.html#cd">CD chapter</A> of the documentation).</DD>
-
-</DL>
-
-
-<H2><A NAME="features">5.6 Feature requests</A></H2>
-
-<DL>
-
- <DT>Q: If MPlayer is paused and I try to seek or press any key at all,
- MPlayer ceases to be paused. I would like to be able to seek in the
- paused movie.</DT>
- <DD>A: This is very tricky to implement without losing A/V synchronization.
- All attempts have failed so far, but patches are welcome.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: I'd like to seek +/- 1 frames instead of 10 seconds.</DT>
- <DD>A: This won't be done. It was, but then it messed up A/V sync. Feel free
- to implement it, and send a patch. Don't ask for it.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: Where is the Windows version?</DT>
- <DD>A: It's not released, and won't be. Look around the Windows scene (open
- source ASF parsers, open source ASF encoders, etc) and you'll know why. We
- don't want to go to jail. BTW you can compile it yourself, under
- <A HREF="documentation.html#cygwin">Cygwin</A>.</DD>
- <DD>&nbsp;</DD>
-
- <DT>Q: How can I make MPlayer remember the options I use for this
- particular file?</DT>
- <DD>A: Create a file named <CODE>movie.avi.conf</CODE> with the
- file-specific options in it and put it in <CODE>~/.mplayer</CODE> or in
- the same directory as the file.</DD>
- <DD>&nbsp;</DD>