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803 lines
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803 lines
35 KiB
HTML
<!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>FAQ - 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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<STYLE TYPE="text/css">
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dt {
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font-weight : bold;
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}
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</STYLE>
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</HEAD>
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<BODY>
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<H1><A NAME="faq">5. FAQ</A></H1>
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<UL>
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<LI><A HREF="#development">5.1 Development</A></LI>
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<LI><A HREF="#compilation">5.2 Compilation</A></LI>
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<LI><A HREF="#general">5.3 General questions</A></LI>
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<LI><A HREF="#playback">5.4 Playback problems</A></LI>
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<LI><A HREF="#driver">5.5 Video/audio driver problems (vo/ao)</A></LI>
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<LI><A HREF="#dvd">5.6 DVD playback</A></LI>
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<LI><A HREF="#features">5.7 Feature requests</A></LI>
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<LI><A HREF="#encoding">5.8 Encoding</A></LI>
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</UL>
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<H2><A NAME="development">5.1 Development</A></H2>
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<DL>
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<DT>Q: How do I create a proper patch for MPlayer?</DT>
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<DD>A: Send a <B>unified</B> diff (<CODE>diff -u</CODE>) of your changes
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against the CVS version of MPlayer to the
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<A HREF="http://mplayerhq.hu/mailman/listinfo/mplayer-dev-eng">mplayer-dev-eng</A>
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mailing list. We wrote a <A HREF="../tech/patches.txt">short document</A>
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that has more details. Please follow those instructions.</DD>
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<DD> </DD>
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<DT>Q: How can I support MPlayer development?</DT>
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<DD>A: We are more than happy to accept your hardware and software
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<A HREF="http://www.mplayerhq.hu/homepage/donations.html">donations</A>.
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They help us in continuously improving MPlayer.</DD>
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<DD> </DD>
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<DT>Q: How can I become an MPlayer developer?</DT>
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<DD>A: We always welcome coders and documenters. Read the
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<A HREF="../tech/">technical documentation</A> to get a first grasp. Then you
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should subscribe to the
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<A HREF="http://mplayerhq.hu/mailman/listinfo/mplayer-dev-eng">mplayer-dev-eng</A>
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mailing list and start coding.</DD>
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<DD> </DD>
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<DT>Q: Why don't you use autoconf/automake?</DT>
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<DD>A: We have a modular, handwritten build system. It does a reasonably good
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job, so why change? Besides, we dislike the auto* tools, just like
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<A HREF="http://freshmeat.net/articles/view/889/">other people</A>.</DD>
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<DD> </DD>
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</DL>
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<H2><A NAME="compilation">5.2 Compilation</A></H2>
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<DL>
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<DT>Q: Are there binary (RPM/deb) packages of MPlayer?</DT>
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<DD>A: See the
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<A HREF="documentation.html#debian">Debian</A> and
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<A HREF="documentation.html#rpm">RPM</A> section for details.</DD>
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<DD> </DD>
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<DT>Q: Compilation stops with an error message similar to this one:
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<PRE>
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In file included from mplayer.c:34:
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mw.h: In function `mplMainDraw':
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mw.h:209: Internal compiler error in print_rtl_and_abort, at flow.c:6458
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Please submit a full bug report,
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with preprocessed source if appropriate.
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</PRE>
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</DT>
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<DD>A: This is a known problem of gcc 3.0.4, upgrade to 3.1 to solve the
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problem. How to install gcc is described in the
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<A HREF="users_against_developers.html#gcc">gcc 2.96</A> section.</DD>
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<DD> </DD>
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<DT>Q: Configure ends with this text, and MPlayer won't compile!<BR>
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<CODE>"Your gcc does not support even i386 for '-march' and '-mcpu'."</CODE>
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</DT>
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<DD>A: Your gcc isn't installed correctly, check the <CODE>config.log</CODE>
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file for details.</DD>
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<DD> </DD>
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<DT>Q: What's the problem with gcc 2.96?</DT>
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<DD>A: <B>We strongly discourage the use of gcc 2.96!</B><BR>
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Read <A HREF="users_against_developers.html#gcc">this</A> document for
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details about why Red Hat released gcc 2.96 and what the problems are all
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about. If you still really really want to use it, be sure to get the latest
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release and give the <CODE>--disable-gcc-checking</CODE> option to
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configure. Remember that you are on your own from this point. Do <B>not</B>
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report bugs, do <B>not</B> ask for help on the mailing lists. We will
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<B>not</B> provide any support in case you run into problems.</DD>
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<DD> </DD>
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<DT>Q: Great, I have gcc 3.0.1 from Red Hat/Mandrake, then I'm fine!</DT>
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<DD>A: No, since there have been/are issues with these compilers as well.
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To check the status of current compilers' MPlayer support, see the
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<A HREF="documentation.html#installation">Installation</A> section.</DD>
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<DD> </DD>
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<DT>Q: I tried to compile MPlayer, but I got this output:
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<PRE>
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In file included from /usr/include/g++-v3/bits/std_cwchar.h:42,
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from /usr/include/g++-v3/bits/fpos.h:40,
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from /usr/include/g++-v3/bits/char_traits.h:40,
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from /usr/include/g++-v3/bits/std_string.h:41,
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from /usr/include/g++-v3/string:31,
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from libwin32.h:36,
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from DS_AudioDecoder.h:4,
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from DS_AudioDec.cpp:5:
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/usr/include/wchar.h: In function Long long int wcstoq(const wchar_t*,
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wchar_t**, int)':
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/usr/include/wchar.h:514: cannot convert `const wchar_t* __restrict' to
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`const
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</PRE>
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</DT>
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<DD>A: Upgrade your glibc to the latest release. On Mandrake, use 2.2.4-8mdk.</DD>
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<DD> </DD>
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<DT>Q: ... gcc 2.96 ... (Yes, some people are STILL flaming about gcc 2.96!)</DT>
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<DD>A: Quoted from a
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<A HREF="http://www.mplayerhq.hu/pipermail/mplayer-users/2001-October/005351.html">mail</A>
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A'rpi sent to the
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<A HREF="http://mplayerhq.hu/pipermail/mplayer-users/">mplayer-users</A>
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list (the word 'ideg' is described below):
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<BLOCKQUOTE>
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<P>And we have idegs. And our idegcounter overflowed again and again.</P>
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<P>Unfortunately MPlayer is out of our control. It's used by lamers, Linux
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users who can't even use Windows, and never tried to compile a kernel. They
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installed (with default options) Mandrake or Red Hat or SuSE, and without
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RTFM'ing they send messages saying 'it doesn't work! help me! please! i'm
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new to Linux! help! oh! help me!'. We can't stop them, but at least we try
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to force them to RTFM and to read the messages of ./configure and MPlayer.</P>
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<P>And you clever guys come and flame us with gcc 2.96 and binary packages.
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Instead of helping users or making patches to help solve problems.</P>
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<P>Half of our spare/free time is spent by answering silly mails here and
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making newer tricks and checks to configure to avoid such mails.</P>
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<P>And there is a balance. On the one side are you, clever guys, saying we
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are very bad because we don't like buggy gcc 2.96, and on the other side
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there are the 'new to Linux' guys who are showing us gcc 2.96 is buggy.</P>
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<P>Conclusion: We can't be good. Half the people will always say we are bad.</P>
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<P>Maybe we should close the project, make it closed source, commercial, and
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provide install support for it. then we could leave current work, so
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development could go faster, and we could earn lots of money with it and buy
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a big house, etc etc. Do you really want it? It seems.</P>
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</BLOCKQUOTE>
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</DD>
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<DD> </DD>
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<DT>Q: SDL output doesn't work or compile. The problem is ...</DT>
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<DD>A: It was tested to work with SDL 1.2.x and may run on SDL 1.1.7+.
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It does <B>not</B> work with any previous version. So if you choose to use
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such a version, you are on your own.</DD>
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<DD> </DD>
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<DT>Q: I am still having trouble compiling with SDL support. gcc says
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something about "undefined reference to `SDL_EnableKeyRepeat'". What
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now?</DT>
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<DD>A: Where did you install the SDL library? If you installed in /usr/local
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(the default) then edit the top level config.mak and add
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"-L/usr/local/lib" after "X_LIBS=". Now type make. You're done!</DD>
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<DD> </DD>
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<DT>Q: It doesn't compile, and it misses uint64_t inttypes.h and similar
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things ...</DT>
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<DD>A: Copy etc/inttypes.h to the MPlayer directory
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(<CODE>cp etc/inttypes.h .</CODE>) and try again ...</DD>
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<DD> </DD>
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<DT>Q: I have Linux running on a Pentium III but <CODE>./configure</CODE>
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doesn't detect SSE ...</DT>
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<DD>A: Only kernel versions 2.4.x support SSE (or try 2.2.19 or newer, but
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be prepared for problems).</DD>
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<DD> </DD>
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<DT>Q: I have a Matrox G200/G400/G450/G550, how do I compile and use the
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mga_vid kernel driver?</DT>
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<DD>A: Read the <A HREF="video.html#mga_vid">mga_vid</A> section.</DD>
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<DD> </DD>
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<DT>Q: Hmm, strange. When loading the mga_vid.o kernel module, I found this in
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the logs:<BR>
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<CODE>Warning: loading mga_vid.o will taint the kernel: no license</CODE></DT>
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<DD>A: The latest kernel modutils require a flag indicating the license
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(mainly to avoid kernel hackers debugging closed source drivers).
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Upgrade your kernel, modutils and MPlayer.</DD>
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<DD> </DD>
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<DT>Q: During 'make', MPlayer complains about X11 libraries. I don't
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understand, I DO have X installed!?</DT>
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<DD>A: ... but you don't have the X development package installed. Or not
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correctly. It's called XFree86-devel* under Red Hat, and xlibs-dev under
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Debian. Also check if the <CODE>/usr/X11</CODE> and <CODE>/usr/include/X11</CODE>
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symlinks exist (this can be a problem on Mandrake systems). They can be
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created with these commands:<BR>
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<CODE>$ ln -sf /usr/X11R6 /usr/X11</CODE><BR>
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<CODE>$ ln -sf /usr/X11R6/include/X11 /usr/include/X11</CODE><BR>
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Your distribution may differ from the
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<A HREF="http://www.pathname.com/fhs/">Filesystem Hierarchy Standard</A>.</DD>
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<DD> </DD>
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<DT>Q: I can't compile SVGAlib. I'm using kernel 2.3/2.4 ...</DT>
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<DD>A: You have to edit SVGAlib's Makefile.cfg and comment
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<CODE>BACKGROUND = y</CODE> out.</DD>
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<DD> </DD>
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<DT>Q: I compiled MPlayer with libdvdcss/libdivxdecore support, but when
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I try to start it, it says:<BR>
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<CODE>> error while loading shared libraries: lib*.so.0: cannot load
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shared object file: No such file or directory</CODE><BR>
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I checked up on the file and it IS there in <CODE>/usr/local/lib</CODE> ...</DT>
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<DD>A: Add <CODE>/usr/local/lib</CODE> to <CODE>/etc/ld.so.conf</CODE> and run
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<CODE>ldconfig</CODE>.</DD>
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<DD> </DD>
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<DT>Q: When compiling MEncoder, it segfaults at linking!</DT>
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<DD>A: This is a linker problem. Upgrading binutils should help (2.11.92.*
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or newer should be good). Since it is not our fault, please do <B>not</B>
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report!</DD>
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<DD> </DD>
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<DT>Q: MPlayer dies with segmentation fault upon pthread check!</DT>
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<DD>A: chmod 644 /usr/lib/libc.so</DD>
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<DD> </DD>
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<DT>Q: I'd like to compile MPlayer on Minix!</DT>
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<DD>A: Me too. :)</DD>
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<DD> </DD>
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</DL>
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<H2><A NAME="general">5.3 General questions</A></H2>
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<DL>
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<DT>Q: Are there any mailing lists on MPlayer?</DT>
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<DD>A: Yes. See the
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<A HREF="documentation.html#mailing_lists">mailing lists</A> section.</DD>
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<DD> </DD>
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<DT>Q: I've found a nasty bug when I tried to play my favorite video!
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Who should I inform?</DT>
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<DD>A: Please read the <A HREF="bugreports.html">bug reporting guidelines</A>
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and follow the instructions.</DD>
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<DD> </DD>
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<DT>Q: I have problems playing files with the ... codec. Can I use them?</DT>
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<DD>A: Check the
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<A HREF="http://www.mplayerhq.hu/DOCS/codecs-status.html">codec status</A>,
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if it doesn't contain your codec, read the
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<A HREF="codecs.html">codec documentation</A>, especially the
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<A HREF="codecs.html#importing">codec importing HOWTO</A> and contact us.</DD>
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<DD> </DD>
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<DT>Q: When I start playing, I get this message but everything seems fine:<BR>
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<CODE>Linux RTC init: ioctl (rtc_pie_on): Permission denied</CODE></DT>
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<DD>A: You need root privileges or a
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specially set up kernel to use the new timing code. For details see the
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<A HREF="documentation.html#rtc">RTC section</A> of the documentation.</DD>
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<DD> </DD>
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<DT>Q: There is a timer in the upper left corner. How can I get rid of it?</DT>
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<DD>A: Press <CODE>o</CODE> and try the <CODE>-osdlevel</CODE> option.</DD>
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<DD> </DD>
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<DT>Q: The <CODE>-xy</CODE> or <CODE>-fs</CODE> option doesn't work with the
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x11 driver (<CODE>-vo x11</CODE>) ...</DT>
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<DD>A: It does, but you have to explicitly specify software scaling (very
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slow) with the <CODE>-zoom</CODE> option. You better use XF86VidMode
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support: You must specify the <CODE>-vm</CODE> and the <CODE>-fs</CODE>
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option, and you're done. Make sure you have the right modelines in your
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XF86Config file, and try to make the <A HREF="video.html#dga">DGA driver</A>
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and <A HREF="video.html#sdl">SDL's DGA driver</A> work for you.
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It's much faster. If SDL's DGA works, use that, it'll be even faster.</DD>
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<DD> </DD>
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<DT>Q: What is the meaning of the numbers on the status line?</DT>
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<DD>A: Example:
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<CODE>A: 2.1 V: 2.2 A-V: -0.167 ct: 0.042 57/57 41% 0% 2.6% 0 4 49%</CODE>
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<UL>
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<LI>A: audio position in seconds</LI>
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<LI>V: video position in seconds</LI>
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<LI>A-V: audio-video difference in seconds (delay)</LI>
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<LI>ct: total A-V sync correction done</LI>
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<LI>frames played (counting from last seek)</LI>
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<LI>frames decoded (counting from last seek)</LI>
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<LI>video codec cpu usage in percent (for slices and DR this includes
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video_out)</LI>
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<LI>video_out cpu usage</LI>
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<LI>audio codec cpu usage in percent</LI>
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<LI>frames needed to drop to maintain A-V sync</LI>
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<LI>current level of image postprocessing (when using <CODE>-autoq</CODE>)</LI>
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<LI>current cache size used (around 50% is normal)</LI>
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</UL>
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Most of them are for debug purposes and will be removed at some point.</DD>
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<DD> </DD>
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<DT>Q: What if I don't want them to appear?</DT>
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<DD>A: Use the <CODE>-quiet</CODE> or <CODE>-really-quiet</CODE> option as
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described in the man page.</DD>
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<DD> </DD>
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<DT>Q: Why is video_out cpu usage zero (0%) for some files?</DT>
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<DD>A1: It's not zero, but it's called from the codec and thus cannot be
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measured separately. You should try to play the file using
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<CODE>-vo null</CODE> and then <CODE>-vo ...</CODE> and check the
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difference to see the video_out speed.</DD>
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<DD>A2: You are using Direct Rendering,
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where the codec renders to the video memory itself. In this case, the
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decoding percentage contains the display percentage, too.</DD>
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<DD> </DD>
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<DT>Q: There are error messages about file not found
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<CODE>/usr/local/lib/codecs/...</CODE></DT>
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<DD>A: Download the Win32 codecs from our
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<A HREF="http://www.mplayerhq.hu/MPlayer/releases/codecs/">codecs page</A>
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(avifile's codec package has a different DLL set) and install it.</DD>
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<DD> </DD>
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<DT>Q: Can I run multiple instances of MPlayer?</DT>
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<DD>A: Yes. Some video out drivers like xv, dga or (x)mga are exclusive, some
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are exclusive in combination with certain graphics boards and drivers. You
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will not be able to run more than one instance of MPlayer with one of those
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video out drivers. To a lesser degree this also applies to audio drivers.
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Not all allow playback of multiple streams on the same device.</DD>
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<DD> </DD>
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<DT>Q: Umm, what is "IdegCounter"?</DT>
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<DD>A: A combination of a Hungarian and an English word. "Ideg" in Hungarian
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means the same as "nerve" in English, and is pronounced as something like
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"ydaegh". It was first used to measure the nervousness of A'rpi, after some
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(umm) "mysterious" disappearance of CVS code ;)</DD>
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<DD> </DD>
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<DT>Q: And what is "Faszom(C)ounter"?</DT>
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<DD>A: "Fasz" is a Hungarian word you don't want to know, the others are
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connected to the perverted minds of the MPlayer developers.</DD>
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<DD> </DD>
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<DT>Q: LIRC doesn't work, because ...</DT>
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<DD>A: Are you sure you are using <CODE>mplayer</CODE> instead of
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<CODE>mplayer_lirc</CODE>? Note that it was <CODE>mplayer_lirc</CODE> for a
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long time, including the 0.60 release, but it was recently changed back to
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<CODE>mplayer</CODE>.</DD>
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<DD> </DD>
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<DT>Q: Subtitles are very nice, the most beautiful I've ever seen, but they
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slow down playing! I know it's unlikely ...</DT>
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<DD>A: After running <CODE>./configure</CODE>, edit <CODE>config.h</CODE> and
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replace <CODE>#undef FAST_OSD</CODE> with <CODE>#define FAST_OSD</CODE>.
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Then recompile.</DD>
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<DD> </DD>
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<DT>Q: The onscreen display (OSD) is flickering!</DT>
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<DD>A: You use a vo driver with single buffering (x11,xv). With xv,
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use the <CODE>-double</CODE> option. Also try <CODE>-vf expand</CODE>.</DD>
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<DD> </DD>
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<DT>Q: What exactly is this libavcodec thing?</DT>
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<DD>A: See the <A HREF="codecs.html#libavcodec">libavcodec section</A>.</DD>
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<DD> </DD>
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<DT>Q: But configure tells me "Checking for libavcodec ... no"!</DT>
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<DD>A: You need to get libavcodec from FFmpeg's CVS. Read the instructions in
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the <A HREF="codecs.html#libavcodec">libavcodec section</A>.</DD>
|
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<DD> </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> </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 -> Settings -> Configuration -> Base Configuration<BR>
|
|
Set "Use Applications position hints" to "Yes".</DD>
|
|
<DD> </DD>
|
|
|
|
<DT>Q: How can I run MPlayer in the background?</DT>
|
|
<DD>A: Use: <CODE>mplayer <options> <filename> < /dev/null &</CODE></DD>
|
|
<DD> </DD>
|
|
|
|
</DL>
|
|
|
|
|
|
<H2><A NAME="playback">5.4 Playback problems</A></H2>
|
|
|
|
<DL>
|
|
|
|
<DT>Q: I cannot pinpoint the cause of some strange playback problem.</DT>
|
|
<DD>A: Do you have a stray <CODE>codecs.conf</CODE> file in
|
|
<CODE>~/.mplayer/</CODE>, <CODE>/etc/</CODE>, <CODE>/usr/local/etc/</CODE>
|
|
or a similar location? Remove it, outdated <CODE>codecs.conf</CODE> files
|
|
can cause obscure problems. MPlayer will use its builtin one instead.</DD>
|
|
<DD> </DD>
|
|
|
|
<DT>Q: ... works with xine/avifile/... but doesn't with MPlayer.</DT>
|
|
<DD>A: MPlayer is not xine/avifile/... Although these players have some code
|
|
in common, the codecs (DLL) set, synchronization, demultiplexing etc is
|
|
different and should not be compared. If you have a file MPlayer fails to
|
|
play correctly but works in another player, please read the
|
|
<A HREF="bugreports.html">bug reporting guidelines</A> and upload the file
|
|
to our FTP server.</DD>
|
|
<DD> </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 the <A HREF="bugreports.html">bug reporting guidelines</A> and
|
|
upload the file to our FTP server.</DD>
|
|
<DD> </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>
|
|
<CODE>libc.so.6 => /lib/libc.so.6 (0x4???????)</CODE><BR>
|
|
where "?" is any number then it's OK, the error is not here. If it is:<BR>
|
|
<CODE>libc.so.6 => /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> </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> </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> </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> </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> </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> </DD>
|
|
|
|
<DT>Q: I have an MJPEG file which works with other players but displays only a
|
|
black image in MPlayer.</DT>
|
|
<DD>A: Use another codec to play the file, try <CODE>-vc ffmjpeg</CODE>.</DD>
|
|
<DD> </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</A>
|
|
section).</DD>
|
|
<DD> </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> </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> </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>
|
|
<DD> </DD>
|
|
|
|
<DT>Q: While playing a movie it suddenly gets jerky and I get
|
|
the following message:<BR>
|
|
<CODE>Badly interleaved AVI file detected - switching to -ni
|
|
mode...</CODE>
|
|
<DD>A: Badly interleaved files and <CODE>-cache</CODE> don't work well
|
|
together. Try <CODE>-nocache</CODE>.</DD>
|
|
<DD> </DD>
|
|
|
|
</DL>
|
|
|
|
|
|
<H2><A NAME="driver">5.5 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 -> 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> </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">DGA</A> section. Alternatively, try SDL's DGA
|
|
driver with the <CODE>-vo sdl:dga</CODE> option.</DD>
|
|
<DD> </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>
|
|
<CODE>chown root /usr/local/bin/mplayer</CODE><BR>
|
|
<CODE>chmod 755 /usr/local/bin/mplayer</CODE><BR>
|
|
<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> </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>
|
|
Major opcode of failed request: 147 (MIT-SHM)<BR>
|
|
Minor opcode of failed request: 1 (X_ShmAttach)<BR>
|
|
Serial number of failed request: 26<BR>
|
|
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> </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> </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> </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> </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>
|
|
<DD> </DD>
|
|
|
|
</DL>
|
|
|
|
|
|
<H2><A NAME="dvd">5.6 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> </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) >= c_adt->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> </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> </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>.</DD>
|
|
<DD> </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> </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> </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> </DD>
|
|
|
|
<DT>Q: Is it possible to play/encode only selected chapters?</DT>
|
|
<DD>A: Yes, try the <CODE>-chapter</CODE> option.</DD>
|
|
<DD> </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>).</DD>
|
|
<DD> </DD>
|
|
|
|
</DL>
|
|
|
|
|
|
<H2><A NAME="features">5.7 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> </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> </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> </DD>
|
|
|
|
</DL>
|
|
|
|
|
|
<H2><A NAME="encoding">5.8 Encoding</A></H2>
|
|
|
|
<DL>
|
|
|
|
<DT>Q: How can I encode?</DT>
|
|
<DD>A: Read the <A HREF="encoding.html">MEncoder</A> section.</DD>
|
|
<DD> </DD>
|
|
|
|
<DT>Q: How can I create VCDs?</DT>
|
|
<DD>A: Try the <CODE>mencvcd</CODE> script from the <CODE>TOOLS</CODE>
|
|
subdirectory. With it you can encode DVDs or other movies to VCD or SVCD
|
|
format and even burn them directly to CD.</DD>
|
|
<DD> </DD>
|
|
|
|
<DT>Q: How can I join two video files?</DT>
|
|
<DD>A: This has been discussed to no end on mplayer-users. Go search the
|
|
<A HREF="http://mplayerhq.hu/cgi-bin/htsearch?restrict=/mplayer-users/">archives</A>
|
|
for a complete answer. This is a complicated topic and your mileage may
|
|
vary a lot depending on the kind of files you want to merge. MPEGs can be
|
|
concatenated into a single file with luck. For AVIs there are two tools,
|
|
<A HREF="http://fixounet.free.fr/avidemux/">avidemux</A>
|
|
and avimerge (part of the
|
|
<A HREF="http://www.theorie.physik.uni-goettingen.de/~ostreich/transcode/">transcode</A>
|
|
tool set), available that might do the job. You can also try MEncoder if
|
|
you have two files sharing the same dimensions and codec. Try<BR>
|
|
<CODE>cat file1 file2 > file3</CODE><BR>
|
|
<CODE>mencoder -ovc copy -oac copy -o out.avi -forceidx file3.avi</CODE></DD>
|
|
<DD> </DD>
|
|
|
|
<DT>Q: My tuner works, I can hear the sound and watch the video with MPlayer,
|
|
but MEncoder doesn't encode audio!</DT>
|
|
<DD>A: TV audio encoding for Linux is currently unimplemented, we're working
|
|
on it. At the moment it works only on BSD.</DD>
|
|
<DD> </DD>
|
|
|
|
<DT>Q: I can't encode DVD subtitles into the AVI!</DT>
|
|
<DD>A: You have to specify the <CODE>-sid</CODE> option correctly!</DD>
|
|
<DD> </DD>
|
|
|
|
<DT>Q: MEncoder segfaults on startup!</DT>
|
|
<DD>A: Upgrade DivX4Linux.</DD>
|
|
<DD> </DD>
|
|
|
|
<DT>Q: How can I encode only selected chapters from a DVD?</DT>
|
|
<DD>A: Use the <CODE>-chapter</CODE> option correctly, like:
|
|
<CODE>-chapter 5-7</CODE></DD>
|
|
<DD> </DD>
|
|
|
|
<DT>Q: I'm trying to work with 2GB+ files on a VFAT file system. Does it work?</DT>
|
|
<DD>A: No, VFAT doesn't support 2GB+ files.</DD>
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<DD> </DD>
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<DT>Q: Why is the recommended bitrate printed by MEncoder negative?</DT>
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<DD>A: Because the bitrate you encoded the audio with is too large to fit the
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movie on any CD. Check if you have libmp3lame installed properly.</DD>
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<DD> </DD>
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<DT>Q: I can't encode ASF files to AVI/DivX because it uses 1000 fps?</DT>
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<DD>A: Because ASF uses variable frame rate but AVI uses a fixed one, you
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have to set it by hand using <CODE>-ofps</CODE>.</DD>
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<DD> </DD>
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<DT>Q: How can I put subtitles in the output file?</DT>
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<DD>A: Just pass the <CODE>-sub <filename> option</CODE> (or
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<CODE>-sid</CODE>, <CODE>-vobsub</CODE>, respectively) to MEncoder.</DD>
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<DD> </DD>
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</DL>
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</HTML>
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