mirror of
https://github.com/mpv-player/mpv
synced 2024-12-13 10:26:00 +00:00
73be96ada5
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@15836 b3059339-0415-0410-9bf9-f77b7e298cf2
1514 lines
52 KiB
XML
1514 lines
52 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision$ -->
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<chapter id="faq" xreflabel="FAQ">
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<title>Frequently Asked Questions</title>
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<qandaset defaultlabel="qanda">
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<qandadiv id="faq-development">
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<title>Development</title>
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<qandaentry>
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<question><para>
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How do I create a proper patch for <application>MPlayer</application>?
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</para></question>
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<answer><para>
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We made a <ulink url="../../tech/patches.txt">short document</ulink>
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describing all the necessary details. Please follow the instructions.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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How do I translate <application>MPlayer</application> to a new language?
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</para></question>
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<answer><para>
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Read the <ulink url="../../tech/translations.txt">translation HOWTO</ulink>,
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it should explain everything. You can get further help on the
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<ulink url="http://mplayerhq.hu/mailman/listinfo/mplayer-docs">MPlayer-docs</ulink>
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mailing list.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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How can I support <application>MPlayer</application> development?
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</para></question>
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<answer><para>
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We are more than happy to accept your hardware and software
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<ulink url="http://www.mplayerhq.hu/homepage/donations.html">donations</ulink>.
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They help us in continuously improving <application>MPlayer</application>.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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How can I become an <application>MPlayer</application> developer?
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</para></question>
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<answer><para>
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We always welcome coders and documenters. Read the
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<ulink url="../../tech/">technical documentation</ulink>
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to get a first grasp. Then you should subscribe to the
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<ulink url="http://mplayerhq.hu/mailman/listinfo/mplayer-dev-eng">MPlayer-dev-eng</ulink>
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mailing list and start coding. If you want to help out with the documentation,
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join the
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<ulink url="http://mplayerhq.hu/mailman/listinfo/mplayer-docs">MPlayer-docs</ulink>
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mailing list.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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Why don't you use autoconf/automake?
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</para></question>
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<answer><para>
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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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<ulink url="http://freshmeat.net/articles/view/889/">other people</ulink>.
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</para></answer>
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</qandaentry>
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</qandadiv>
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<qandadiv id="faq-compilation">
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<title>Compilation</title>
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<qandaentry>
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<question><para>
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Compilation fails with an error and <application>gcc</application> bails out
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with some cryptic message containing the phrase
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<systemitem>internal compiler error</systemitem> or
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<systemitem>unable to find a register to spill</systemitem>.
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</para></question>
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<answer><para>
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You have stumbled over a bug in <application>gcc</application>. Please
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<ulink url="http://gcc.gnu.org/bugs.html">report it to the gcc team</ulink>
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but not to us. For some reason <application>MPlayer</application> seems to
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trigger compiler bugs frequently. Nevertheless we cannot fix them and do not
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add workarounds for compiler bugs to our sources. To avoid this problem,
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either stick with a compiler version that is known to be reliable and
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stable, or upgrade frequently.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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Are there binary (RPM/deb) packages of <application>MPlayer</application>?
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</para></question>
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<answer><para>
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See the <link linkend="debian">Debian</link> and <link linkend="rpm">RPM</link>
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section for details.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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How can I build a 32 bit <application>MPlayer</application> on 64 bit Athlon?
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</para></question>
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<answer><para>
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Try the following configure options:
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<screen>
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./configure --target=athlon_xp --cc="gcc -m32" --as="as --32" --with-extralibdir=/usr/lib
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</screen>
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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Compilation stops with an error message similar to this one:
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<screen>
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cfft.c: In function`passf2':
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cfft.c:556: unable to find a register to spill in class `FLOAT_REGS'
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cfft.c:556: this is the insn:
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(insn 235 233 246 (set (subreg:SF (reg/v:DI 29 rmm0 [110]) 0)
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(minus:SF (mem:SF (plus:SI (mult:SI (reg:SI 1 edx [112])
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(const_int 8 [0x8]))
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(reg/v/f:SI 3 ebx [62])) [4 S4 A32])
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(reg:SF 8 st(0) [132]))) 533 {*fop_sf_1_nosse} (insn_list
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232 (nil)) (expr_list:REG_DEAD (reg:SF 8 st(0) [132])
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(nil)))
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cfft.c:556: confused by earlier errors, bailing out
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</screen>
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</para></question>
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<answer><para>
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This is a known problem of <application>gcc</application> 3.2, upgrade
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to 3.3 to solve the problem. How to install gcc is described in the
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<link linkend="gcc-296">gcc 2.96</link> section. Alternatively you can use
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an external FAAD library as described in the
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<link linkend="aac">AAC</link> section.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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Compilation stops with an error message similar to this one:
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<screen>
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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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</screen>
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</para></question>
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<answer><para>
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This is a known problem of <application>gcc</application> 3.0.4, upgrade
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to 3.1 to solve the problem. How to install gcc is described in the
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<link linkend="gcc-296">gcc 2.96</link> section.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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Configure ends with this text, and <application>MPlayer</application> won't compile!
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<screen>Your gcc does not support even i386 for '-march' and '-mcpu'</screen>
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</para></question>
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<answer><para>
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Your gcc isn't installed correctly, check the <filename>configure.log</filename>
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file for details.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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What's the problem with gcc 2.96?
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</para></question>
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<answer><para>
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<emphasis role="bold">We strongly discourage the use of gcc 2.96!</emphasis>
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Read <link linkend="gcc-296">this</link> document for details about why Red Hat
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released gcc 2.96 and what the problems are all about. If you still really really
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want to use it, be sure to get the latest release and give the
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<option>--disable-gcc-checking</option> option to configure. Remember that you
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are on your own from this point. Do <emphasis role="bold">not</emphasis> report
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bugs, do <emphasis role="bold">not</emphasis> ask for help on the mailing lists.
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We will <emphasis role="bold">not</emphasis> provide any support in case you run
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into problems.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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Great, I have gcc 3.0.1 from Red Hat/Mandrake, then I'm fine!
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</para></question>
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<answer><para>
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No, since there have been/are issues with these compilers as well.
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To check the status of current compilers' <application>MPlayer</application>
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support, see the <link linkend="install">Installation</link> section.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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.. gcc 2.96 ... (Yes, some people are STILL flaming about gcc 2.96!)
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</para></question>
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<answer><para>
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Quoted from a <ulink url="http://www.mplayerhq.hu/pipermail/mplayer-users/2001-October/005351.html">mail</ulink>
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A'rpi sent to the <ulink url="http://mplayerhq.hu/pipermail/mplayer-users/">MPlayer-users</ulink>
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list (the word 'ideg' is described below):
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<blockquote>
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<para>
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And we have idegs. And our idegcounter overflowed again and again.
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</para>
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<para>
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Unfortunately <application>MPlayer</application> is out of our control.
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It's used by lamers, Linux users who can't even use Windows, and never
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tried to compile a kernel. They installed (with default options) Mandrake
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or Red Hat or SuSE, and without RTFM'ing they send messages saying
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'it doesn't work! help me! please! i'm new to Linux! help! oh! help me!'.
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We can't stop them, but at least we try to force them to RTFM and to read
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the messages of ./configure and <application>MPlayer</application>.
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</para>
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<para>
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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.
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</para>
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<para>
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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.
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</para>
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<para>
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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.
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</para>
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<para>
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Conclusion: We can't be good. Half the people will always say we are bad.
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</para>
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<para>
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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 development
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could go faster, and we could earn lots of money with it and buy a big house,
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etc etc. Do you really want it? It seems.
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</para>
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</blockquote>
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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SDL output doesn't work or compile. The problem is ...
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</para></question>
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<answer><para>
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It was tested to work with SDL 1.2.x and may run on SDL 1.1.7+. It does
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<emphasis role="bold">not</emphasis> work with any previous version. So
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if you choose to use such a version, you are on your own.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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I am still having trouble compiling with SDL support. gcc says something
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about <screen>undefined reference to SDL_EnableKeyRepeat</screen>. What now?
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</para></question>
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<answer><para>
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Where did you install the SDL library? If you installed in
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<filename class="directory">/usr/local</filename> (the default) then edit the
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top level <filename>config.mak</filename> and add
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<systemitem>-L/usr/local/lib</systemitem> after <systemitem>X_LIBS=</systemitem>.
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Now type <command>make</command>. You're done!
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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I have a Matrox G200/G400/G450/G550, how do I compile/use the mga_vid driver?
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</para></question>
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<answer><para>
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Read the <link linkend="mga_vid">mga_vid</link> section.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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During 'make', <application>MPlayer</application> complains about X11 libraries.
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I don't understand, I DO have X installed!?
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</para></question>
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<answer><para>
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... but you don't have the X development package installed. Or not correctly.
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It's called <filename>XFree86-devel*</filename> under Red Hat, and
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<filename>xlibs-dev</filename> under Debian Woody,
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<filename>libx11-dev</filename> under Debian Sarge. Also check if the
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<filename class="directory">/usr/X11</filename> and
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<filename class="directory">/usr/include/X11</filename> symlinks exist (this
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can be a problem on Mandrake systems). They can be created with these commands:
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<screen>
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# ln -sf /usr/X11R6 /usr/X11
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# ln -sf /usr/X11R6/include/X11 /usr/include/X11
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</screen>
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Your distribution may differ from the
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<ulink url="http://www.pathname.com/fhs/">Filesystem Hierarchy Standard</ulink>.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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I can't compile SVGAlib. I'm using kernel 2.3/2.4 ...
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</para></question>
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<answer><para>
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You have to edit SVGAlib's <filename>Makefile.cfg</filename> and comment
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<systemitem>BACKGROUND = y</systemitem> out.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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I compiled <application>MPlayer</application> with libdvdcss/libdivxdecore support,
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but when I try to start it, it says:
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<screen>
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error while loading shared libraries: lib*.so.0: cannot load shared object file: No such file or directory
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</screen>
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I checked up on the file and it IS there in <filename class="directory">/usr/local/lib</filename> ...
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</para></question>
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<answer><para>
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Add <filename class="directory">/usr/local/lib</filename> to <filename>/etc/ld.so.conf</filename>
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and run <command>ldconfig</command>.
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</para></answer>
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</qandaentry>
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<qandaentry>
|
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<question><para>
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When compiling <application>MEncoder</application>, it segfaults at linking!
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</para></question>
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<answer><para>
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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
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<emphasis role="bold">not</emphasis> report!
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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<application>MPlayer</application> dies with segmentation fault upon pthread check!
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</para></question>
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<answer><para>
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<command>chmod 644 /usr/lib/libc.so</command>
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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I'd like to compile <application>MPlayer</application> on Minix!
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</para></question>
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<answer><para>
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Me too. :)
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</para></answer>
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</qandaentry>
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</qandadiv>
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<qandadiv id="faq-general">
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<title>General questions</title>
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<qandaentry>
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<question><para>
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Are there any mailing lists on <application>MPlayer</application>?
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</para></question>
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<answer><para>
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Yes. See the <link linkend="mailinglists">mailing lists</link>
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section.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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I've found a nasty bug when I tried to play my favorite video! Who should I inform?
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</para></question>
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<answer><para>
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Please read the
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<link linkend="bugreports">bug reporting guidelines</link>
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and follow the instructions.
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</para></answer>
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</qandaentry>
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<qandaentry>
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<question><para>
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I have problems playing files with the ... codec. Can I use them?
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|
</para></question>
|
|
<answer><para>
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Check the <ulink url="../../codecs-status.html">codec status</ulink>,
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if it doesn't contain your codec, read the <link linkend="codecs">codec documentation</link>,
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especially the <link linkend="codec-importing">codec importing HOWTO</link> and contact us.
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</para></answer>
|
|
</qandaentry>
|
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|
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<qandaentry>
|
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<question><para>
|
|
When I start playing, I get this message but everything seems fine:
|
|
<screen>Linux RTC init: ioctl (rtc_pie_on): Permission denied</screen>
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|
</para></question>
|
|
<answer><para>
|
|
You need root privileges or a specially set up kernel to use the new timing
|
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code. For details see the <link linkend="rtc">RTC</link> section of the documentation.
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|
</para></answer>
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|
</qandaentry>
|
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|
|
<qandaentry>
|
|
<question><para>
|
|
How can I make a screenshot?
|
|
</para></question>
|
|
<answer><para>
|
|
You have to use a video output driver that does not employ an overlay to be
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able to take a screenshot. Under X11, <option>-vo x11</option> will do, under
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Windows <option>-vo directx:noaccel</option> works.
|
|
</para></answer>
|
|
</qandaentry>
|
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|
|
<qandaentry>
|
|
<question><para>
|
|
There is a timer in the upper left corner. How can I get rid of it?
|
|
</para></question>
|
|
<answer><para>
|
|
Press <keycap>o</keycap> and try the <option>-osdlevel</option> option.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
The <option>-xy</option> or <option>-fs</option> option doesn't work with
|
|
the x11 driver (<option>-vo x11</option>) ...
|
|
</para></question>
|
|
<answer><para>
|
|
It does, but you have to explicitly specify software scaling (very slow) with the
|
|
<option>-zoom</option> option. You better use XF86VidMode support: You must
|
|
specify the <option>-vm</option> and the <option>-fs</option> option, and you're
|
|
done. Make sure you have the right modelines in your <filename>XF86Config</filename>
|
|
file, and try to make the <link linkend="dga">DGA driver</link> and
|
|
<link linkend="sdl">SDL's DGA driver</link> work for you. It's much
|
|
faster. If SDL's DGA works, use that, it'll be even faster.
|
|
</para></answer>
|
|
</qandaentry>
|
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|
|
<qandaentry>
|
|
<question><para>
|
|
What is the meaning of the numbers on the status line?
|
|
</para></question>
|
|
<answer><para>
|
|
Example:
|
|
<screen>A: 2.1 V: 2.2 A-V: -0.167 ct: 0.042 57/57 41% 0% 2.6% 0 4 49%</screen>
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|
<itemizedlist>
|
|
<listitem><para>A: audio position in seconds</para></listitem>
|
|
<listitem><para>V: video position in seconds</para></listitem>
|
|
<listitem><para>A-V: audio-video difference in seconds (delay)</para></listitem>
|
|
<listitem><para>ct: total A-V sync correction done</para></listitem>
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|
<listitem><para>frames played (counting from last seek)</para></listitem>
|
|
<listitem><para>frames decoded (counting from last seek)</para></listitem>
|
|
<listitem><para>video codec CPU usage in percent (for slices and DR this includes
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|
video_out)</para></listitem>
|
|
<listitem><para>video_out CPU usage</para></listitem>
|
|
<listitem><para>audio codec CPU usage in percent</para></listitem>
|
|
<listitem><para>frames needed to drop to maintain A-V sync</para></listitem>
|
|
<listitem><para>current level of image postprocessing (when using
|
|
<option>-autoq</option>)</para></listitem>
|
|
<listitem><para>current cache size used (around 50% is normal)</para></listitem>
|
|
<listitem><para>playback speed as a factor of original speed</para></listitem>
|
|
</itemizedlist>
|
|
Most of them are for debug purposes and will be removed at some point.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
What if I don't want them to appear?
|
|
</para></question>
|
|
<answer><para>
|
|
Use the <option>-quiet</option> option and read the man page.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
Why is video_out CPU usage zero (0%) for some files?
|
|
</para></question>
|
|
<answer><para>
|
|
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 <option>-vo null</option> and
|
|
then <option>-vo ...</option> and check the difference to see the video_out speed.
|
|
</para></answer>
|
|
<answer><para>
|
|
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.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
There are error messages about file not found <filename>/usr/local/lib/codecs/</filename> ...
|
|
</para></question>
|
|
<answer><para>
|
|
Download the binary codecs from our
|
|
<ulink url="http://www.mplayerhq.hu/MPlayer/releases/codecs/">codecs page</ulink>
|
|
and install it.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
Umm, what is "IdegCounter"?
|
|
</para></question>
|
|
<answer><para>
|
|
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 ;)
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
And what is "Faszom(C)ounter"?
|
|
</para></question>
|
|
<answer><para>
|
|
"Fasz" is a Hungarian word you don't want to know, the others are
|
|
connected to the perverted minds of the <application>MPlayer</application> developers.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
Subtitles are very nice, the most beautiful I've ever seen, but they
|
|
slow down playing! I know it's unlikely ...
|
|
</para></question>
|
|
<answer><para>
|
|
After running <filename>./configure</filename>, edit <filename>config.h</filename>
|
|
and replace <systemitem>#undef FAST_OSD</systemitem> with
|
|
<systemitem>#define FAST_OSD</systemitem>. Then recompile.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
What exactly is this <systemitem class="library">libavcodec</systemitem> thing?
|
|
</para></question>
|
|
<answer><para>
|
|
See the
|
|
<link linkend="ffmpeg"><systemitem class="library">libavcodec</systemitem></link>
|
|
section.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
But configure tells me
|
|
<screen>Checking for libavcodec ... no</screen>
|
|
</para></question>
|
|
<answer><para>
|
|
You need to get <systemitem class="library">libavcodec</systemitem> from
|
|
FFmpeg's CVS. Read the instructions in the
|
|
<link linkend="ffmpeg"><systemitem class="library">libavcodec</systemitem></link>
|
|
section.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I can't access the GUI menu. I press right click, but I can't
|
|
access any menu items!
|
|
</para></question>
|
|
<answer><para>
|
|
Are you using FVWM? Try the following:
|
|
<orderedlist>
|
|
<listitem><para>Start -> Settings -> Configuration -> Base Configuration</para></listitem>
|
|
<listitem><para>Set <systemitem>Use Applications position hints</systemitem>
|
|
to <systemitem>Yes</systemitem></para></listitem>
|
|
</orderedlist>
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
How can I run <application>MPlayer</application> in the background?
|
|
</para></question>
|
|
<answer><para>
|
|
Use:
|
|
<screen>mplayer <replaceable>options</replaceable> <replaceable>filename</replaceable> < /dev/null &</screen>
|
|
</para></answer>
|
|
</qandaentry>
|
|
</qandadiv>
|
|
|
|
<qandadiv id="faq-playback">
|
|
<title>Playback problems</title>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I cannot pinpoint the cause of some strange playback problem.
|
|
</para></question>
|
|
<answer><para>
|
|
Do you have a stray <filename>codecs.conf</filename> file in
|
|
<filename>~/.mplayer/</filename>, <filename>/etc/</filename>,
|
|
<filename>/usr/local/etc/</filename> or a similar location? Remove it,
|
|
an outdated <filename>codecs.conf</filename> file can cause obscure
|
|
problems and is intended for use only by developers working on codec
|
|
support. It overrides <application>MPlayer</application>'s internal
|
|
codec settings, which will wreak havoc if incompatible changes are
|
|
made in newer program versions. Unless used by experts it is a recipe
|
|
for disaster in the form of seemingly random and very hard to localize
|
|
crashes and playback problems. If you still have it somewhere on your
|
|
system, you should remove it now.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
How can I select audio/subtitle tracks from a DVD, OGM, Matroska or NUT file?
|
|
</para></question>
|
|
<answer><para>
|
|
You have to use <option>-aid</option> (audio ID) or <option>-alang</option>
|
|
(audio language), <option>-sid</option>(subtitle ID) or <option>-slang</option>
|
|
(subtitle language), for example:
|
|
<screen>
|
|
mplayer example.mkv -alang eng -slang eng
|
|
mplayer example.mkv -aid 1 -sid 1
|
|
</screen>
|
|
To see which ones are available:
|
|
<screen>
|
|
mplayer -vo null -ao null -frames 0 -v <replaceable>filename</replaceable> | grep sid
|
|
mplayer -vo null -ao null -frames 0 -v <replaceable>filename</replaceable> | grep aid
|
|
</screen>
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I'm trying to play a random stream off the internet but it fails.
|
|
</para></question>
|
|
<answer><para>
|
|
Try playing the stream with the <option>-playlist</option> option.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I downloaded a movie off a P2P network and it doesn't work!
|
|
</para></question>
|
|
<answer><para>
|
|
Your file is most probably broken or a fake file. If you got it from
|
|
a friend, and he says it works, try comparing
|
|
<application>md5sum</application> hashes.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I've just installed <application>MPlayer</application>. When I want to
|
|
open a video file it causes a fatal error:
|
|
<screen>
|
|
Error opening/initializing the selected video_out (-vo) device.
|
|
</screen>
|
|
How can I solve my problem?
|
|
</para></question>
|
|
<answer><para>
|
|
Just change your video output device. Issue the following command to get
|
|
a list of available video output drivers:
|
|
<screen>
|
|
mplayer -vo help
|
|
</screen>
|
|
After you've chosen the correct video output driver, add it to
|
|
your configuration file. Add
|
|
<programlisting>
|
|
vo = <replaceable>selected_vo</replaceable>
|
|
</programlisting>
|
|
to <filename>~/.mplayer/config</filename> and/or
|
|
<programlisting>
|
|
vo_driver = <replaceable>selected_vo</replaceable>
|
|
</programlisting>
|
|
to <filename>~/.mplayer/gui.conf</filename>.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I'm having trouble getting my subtitles to display, help!!
|
|
</para></question>
|
|
<answer><para>
|
|
Make sure you have installed fonts properly. Run through the steps in the
|
|
<link linkend="mpsub-install">OSD and subtitle</link> part of the installation
|
|
section again. If you are using TrueType fonts, verify that you have the
|
|
<systemitem class="library">FreeType</systemitem> library installed.
|
|
Other things include checking your subtitles in a text editor or with other
|
|
players. Also try converting them to another format.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
Why doesn't <application>MPlayer</application> work on Fedora Core?
|
|
</para></question>
|
|
<answer><para>
|
|
There is a bad interaction on Fedora between exec-shield,
|
|
prelink, and any applications which use Windows DLLs
|
|
(such as <application>MPlayer</application>).
|
|
</para>
|
|
<para>
|
|
The problem is that exec-shield randomizes the load addresses of all the
|
|
system libraries. This randomization happens at prelink time (once every
|
|
two weeks).
|
|
</para>
|
|
<para>
|
|
When <application>MPlayer</application> tries to load a Windows DLL it
|
|
wants to put it at a specific address (0x400000). If an important system
|
|
library happens to be there already, <application>MPlayer</application>
|
|
will crash.
|
|
(A typical symptom would be a segmentation fault when trying
|
|
to play Windows Media 9 files.)
|
|
</para>
|
|
<para>
|
|
If you run into this problem you have two options:
|
|
<itemizedlist>
|
|
<listitem><para>Wait two weeks. It might start working again.</para></listitem>
|
|
<listitem><para>Relink all the binaries on the system with different
|
|
prelink options. Here are step by step instructions:</para>
|
|
<para>
|
|
<orderedlist>
|
|
<listitem><para>Edit <filename>/etc/syconfig/prelink</filename> and change</para>
|
|
<para>
|
|
<programlisting>
|
|
PRELINK_OPTS=-mR
|
|
</programlisting>
|
|
</para>
|
|
<para>
|
|
to
|
|
<programlisting>
|
|
PRELINK_OPTS="-mR --no-exec-shield"
|
|
</programlisting>
|
|
</para>
|
|
</listitem>
|
|
<listitem><para><command>touch /var/lib/misc/prelink.force</command></para></listitem>
|
|
<listitem><para><command>/etc/cron.daily/prelink</command>
|
|
(This relinks all the applications, and it takes
|
|
quite a while.)</para></listitem>
|
|
<listitem>
|
|
<para><command>execstack -s <replaceable>/path/to/</replaceable>mplayer</command>
|
|
(This turns off exec-shield for the <application>MPlayer</application> binary.)
|
|
</para>
|
|
</listitem>
|
|
</orderedlist>
|
|
</para>
|
|
</listitem>
|
|
</itemizedlist>
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
... works with <application>xine/vlc/...</application> but doesn't with
|
|
<application>MPlayer</application>.
|
|
</para></question>
|
|
<answer><para>
|
|
<application>MPlayer</application> is not <application>xine/vlc/...</application>.
|
|
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 <application>MPlayer</application> fails to
|
|
play correctly but works in another player, please read the
|
|
<link linkend="bugreports">bug reporting guidelines</link> and upload
|
|
the file to our FTP server.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
Audio goes out of sync playing an AVI file.
|
|
</para></question>
|
|
<answer><para>
|
|
Try the <option>-bps</option> or <option>-nobps</option> option. If it does not
|
|
improve, read the
|
|
<link linkend="bugreports">bug reporting guidelines</link>
|
|
and upload the file to FTP.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
<application>MPlayer</application> exits with some error when using <filename>l3codeca.acm</filename>.
|
|
</para></question>
|
|
<answer><para>
|
|
Check <command>ldd /usr/local/bin/mplayer</command> output. If it contains
|
|
<screen>libc.so.6 => /lib/libc.so.6 (0x4???????)</screen>
|
|
where "?" is any number then it's OK, the error is not here. If it is:
|
|
<screen>libc.so.6 => /lib/libc.so.6 (0x00??????)</screen>
|
|
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 <filename>l3codeca.acm</filename> is a
|
|
non-relocatable DLL, it must be loaded to <literal>0x40000000</literal>, we can't
|
|
change this. You should use a non-patched kernel, or use <application>MPlayer</application>'s
|
|
<option>-afm 1</option> option to disable using <filename>l3codeca.acm</filename>.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
My computer plays MS DivX AVIs with resolutions ~ 640x300 and stereo MP3 sound
|
|
too slow. When I use <option>-nosound</option> option, everything is OK (but quiet).
|
|
</para></question>
|
|
<answer><para>
|
|
Your machine is too slow or your sound card driver is broken. Consult the
|
|
documentation to see if you can improve performance.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
<application>MPlayer</application> dies with
|
|
<screen>MPlayer interrupted by signal 4 in module: decode_video</screen>
|
|
</para></question>
|
|
<answer><para>
|
|
Try running <application>MPlayer</application> on the machine you compiled on.
|
|
Or recompile with runtime CPU detection
|
|
(<command>./configure --enable-runtime-cpudetection</command>).
|
|
Don't use <application>MPlayer</application> on a CPU different from the one
|
|
it was compiled on, without using the feature mentioned just now.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I have problems with [your window manager] and fullscreen xv/xmga/sdl/x11 modes ...
|
|
</para></question>
|
|
<answer><para>
|
|
Read the <link linkend="bugreports">bug reporting guidelines</link> and send us
|
|
a proper bug report.
|
|
Also try experimenting with the <option>-fstype</option> option.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I got this playing MPEG files: Can't find codec for video format 0x10000001!
|
|
</para></question>
|
|
<answer><para>
|
|
You have an old version of <filename>codecs.conf</filename> in
|
|
<filename class="directory">~/.mplayer/</filename>,
|
|
<filename class="directory">/etc/</filename>,
|
|
<filename class="directory">/usr/local/etc/</filename> or similar. Remove it,
|
|
it's not needed anymore.
|
|
<emphasis role="bold">OR</emphasis> you have the <option>vc=</option> option or
|
|
something similar in your config file(s).
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
When starting <application>MPlayer</application> under KDE I just get a black
|
|
screen and nothing happens. After about one minute the video starts playing.
|
|
</para></question>
|
|
<answer><para>
|
|
The KDE arts sound daemon is blocking the sound device. Either wait until the
|
|
video starts or disable the arts-daemon in control center. If you want to use
|
|
arts sound, specify audio output via our native arts audio driver
|
|
(<option>-ao arts</option>). If it fails or isn't compiled in, try SDL
|
|
(<option>-ao sdl</option>) and make sure your SDL can handle arts sound. Yet
|
|
another option is to start <application>MPlayer</application> with artsdsp.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I have an AVI that produces a gray screen when played with <option>-vc odivx</option>
|
|
and a green one with <option>-vc divx4</option>.
|
|
</para></question>
|
|
<answer><para>
|
|
It's not a DivX file, but an MS MPEG4v3.
|
|
If you have an old version of <filename>codecs.conf</filename> in
|
|
<filename class="directory">~/.mplayer/</filename>,
|
|
<filename class="directory">/etc/</filename>,
|
|
<filename class="directory">/usr/local/etc/</filename> or similar, remove it.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
When I play this movie I get video-audio desync and/or <application>MPlayer</application>
|
|
crashes with the following message:
|
|
<screen>DEMUXER: Too many (945 in 8390980 bytes) video packets in the buffer!</screen>
|
|
</para></question>
|
|
<answer><para>
|
|
This can have multiple reasons.
|
|
<itemizedlist>
|
|
<listitem><para>
|
|
Your CPU <emphasis role="bold">and/or</emphasis> video card <emphasis role="bold">and/or</emphasis>
|
|
bus is too slow. <application>MPlayer</application> displays a message if this is the case (and the
|
|
dropped frames counter goes up fast).
|
|
</para></listitem>
|
|
<listitem><para>
|
|
If it is an AVI, maybe it has bad interleaving. Try the <option>-ni</option> option.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
Your sound driver is buggy, or you use ALSA 0.5 with <option>-ao oss</option>.
|
|
See the <link linkend="audio">sound card section</link>.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
The AVI has a bad header, try the <option>-nobps</option> option, and/or <option>-mc 0</option>.
|
|
</para></listitem>
|
|
</itemizedlist>
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I have an MJPEG file which works with other players but displays only a black image in
|
|
<application>MPlayer</application>
|
|
</para></question>
|
|
<answer><para>
|
|
Use another codec to play the file, try <option>-vc ffmjpeg</option>.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
When I try to grab from my tuner, it works, but colors are strange. It's OK with other
|
|
applications.
|
|
</para></question>
|
|
<answer><para>
|
|
Your card probably reports some colorspaces as supported when in fact
|
|
it does not support them. Try with YUY2 instead of the
|
|
default YV12 (see the <link linkend="tv-input">TV</link> section).
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I have A/V sync problems. Some of my AVIs play fine, but some play with double speed!
|
|
</para></question>
|
|
<answer><para>
|
|
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 filter.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
All the WMV (or other..) files I play create a green/gray window and there is
|
|
only sound! <application>MPlayer</application> prints:
|
|
<screen>Detected video codec: [null] drv:0 (NULL codec (no decoding))</screen>
|
|
</para></question>
|
|
<answer><para>
|
|
If you have an old version of <filename>codecs.conf</filename> in
|
|
<filename class="directory">~/.mplayer/</filename>,
|
|
<filename class="directory">/etc/</filename>,
|
|
<filename class="directory">/usr/local/etc/</filename> or similar, remove it.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I get very strange percentage values (way too big) while playing files on my notebook.
|
|
</para></question>
|
|
<answer><para>
|
|
It's an effect of the power management / power saving system of your notebook
|
|
(BIOS, not kernel). Plug the external power connector in
|
|
<emphasis role="bold">before</emphasis> you power on your notebook. You can also
|
|
try whether <ulink url="http://www.brodo.de/cpufreq/">cpufreq</ulink>
|
|
(a SpeedStep interface for Linux) helps you.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
The audio/video gets totally out of sync when I run <application>MPlayer</application>
|
|
as root on my notebook. It works normal when i run it as a user.
|
|
</para></question>
|
|
<answer><para>
|
|
This is again a power management effect (see above). Plug the external power
|
|
connector in <emphasis role="bold">before</emphasis> you power on your notebook
|
|
or use the <option>-nortc</option> option.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
While playing a movie it suddenly gets jerky and I get the following message:
|
|
<screen>Badly interleaved AVI file detected - switching to -ni mode...</screen>
|
|
</para></question>
|
|
<answer><para>
|
|
Badly interleaved files and <option>-cache</option> don't work well together.
|
|
Try <option>-nocache</option>.
|
|
</para></answer>
|
|
</qandaentry>
|
|
</qandadiv>
|
|
|
|
<qandadiv id="faq-driver">
|
|
<title>Video/audio driver problems (vo/ao)</title>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
How can I use <application>dmix</application> with
|
|
<application>MPlayer</application>?
|
|
</para></question>
|
|
<answer><para>
|
|
After setting up your
|
|
<ulink url="http://alsa.opensrc.org/index.php?page=DmixPlugin">asoundrc</ulink>
|
|
you have to use <option>-ao alsa:device=dmix</option>.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I have no sound when playing a video and get error messages similar to this one:
|
|
<screen>
|
|
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...
|
|
</screen>
|
|
</para></question>
|
|
<answer><para>
|
|
Are you running KDE or GNOME with the ARTS or ESD sound daemon? Try disabling
|
|
the sound daemon or use the <option>-ao arts</option> or <option>-ao esd</option>
|
|
option to make <application>MPlayer</application> use ARTS or ESD.
|
|
You might also be running ALSA without OSS emulation, try loading the ALSA OSS
|
|
kernel modules or add <option>-ao alsa</option> to your command line to
|
|
directly use the ALSA audio output driver.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
What about the DGA driver? I can't find it!
|
|
</para></question>
|
|
<answer><para>
|
|
<filename>./configure</filename> autodetects your DGA driver. If <option>-vo help</option>
|
|
doesn't show DGA, then there's a problem with your X installation. Try
|
|
<command>./configure --enable-dga</command> and read the
|
|
<link linkend="dga">DGA</link> section. Alternatively, try SDL's DGA driver
|
|
with the <option>-vo sdl:dga</option> option.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
OK, <option>-vo help</option> shows DGA driver, but it complains about permissions.
|
|
Help me!
|
|
</para></question>
|
|
<answer><para>
|
|
It works only if running as root! It's a DGA limitation. You should become root
|
|
(<command>su -</command>), and try again. Another solution is making
|
|
<application>MPlayer</application> SUID root, but it's not recommended!
|
|
<screen>
|
|
chown root /usr/local/bin/mplayer
|
|
chmod 755 /usr/local/bin/mplayer
|
|
chmod +s /usr/local/bin/mplayer
|
|
</screen>
|
|
<warning><para>
|
|
This is a <emphasis role="bold">big</emphasis> security risk! <emphasis role="bold">Never</emphasis>
|
|
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 <application>MPlayer</application>.
|
|
<emphasis role="bold">You have been warned</emphasis>.
|
|
</para></warning>
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
When using XVideo, my Voodoo 3/Banshee says:
|
|
<screen>
|
|
X Error of failed request: BadAccess (attempt to access private resource denied)
|
|
Major opcode of failed request: 147 (MIT-SHM)
|
|
Minor opcode of failed request: 1 (X_ShmAttach)
|
|
Serial number of failed request: 26
|
|
Current serial number in output stream:27
|
|
</screen>
|
|
</para></question>
|
|
<answer><para>
|
|
The <systemitem>tdfx</systemitem> driver in XFree86 4.0.2/4.0.3 had this bug. This was
|
|
solved by <ulink url="http://www.xfree86.org/cvs/changes_4_1.html">bug fix #621
|
|
of the XFree86 4.1.0 CVS log</ulink>. So upgrade to XFree86 4.1.0 or later.
|
|
Alternatively, either download (at least) DRI version 0.6 from the
|
|
<ulink url="http://dri.sf.net">DRI homepage</ulink>, or use CVS DRI.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
OpenGL (<option>-vo gl</option>) output doesn't work (hang/black window/X11
|
|
errors/...).
|
|
</para></question>
|
|
<answer><para>
|
|
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.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I have an nVidia TNT/TNT2 card, and I have a band with strange colors, right
|
|
under the movie! Whose fault is this?
|
|
</para></question>
|
|
<answer><para>
|
|
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!
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
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.
|
|
</para></question>
|
|
<answer><para>
|
|
Yes, nVidia corrected a previous bug (above), and introduced a new one.
|
|
Let's congratulate them. UPDATE: According to <link linkend="nvidia">nVidia</link>,
|
|
this has already been fixed.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
Oh the world is cruel ...! SDL has only <systemitem>x11</systemitem> target,
|
|
but not <systemitem>xv</systemitem>!
|
|
</para></question>
|
|
<answer><para>
|
|
Try that <systemitem>x11</systemitem> target again. Now try <option>-vo x11
|
|
-fs -zoom</option>. See the difference? No?! OK, here comes the enlightenment:
|
|
SDL's <systemitem>x11</systemitem> target uses xv when available, you don't have
|
|
to worry about it ... Note: With SDL you can force/disable Xv using
|
|
<option>-forcexv</option> and <option>-noxv</option>.
|
|
</para></answer>
|
|
</qandaentry>
|
|
</qandadiv>
|
|
|
|
<qandadiv id="faq-dvd">
|
|
<title>DVD playback</title>
|
|
<qandaentry>
|
|
<question><para>
|
|
What about DVD navigation/menus?
|
|
</para></question>
|
|
<answer><para>
|
|
<application>MPlayer</application> does not support DVD menus due to serious
|
|
architectural limitations that prevent proper handling of still images and
|
|
interactive content. If you want to have fancy menus, you will have to use
|
|
another player like <application>xine</application>,
|
|
<application>vlc</application> or <application>Ogle</application>.
|
|
If you want to see DVD navigation in <application>MPlayer</application> you
|
|
will have to implement it yourself, but be aware that it is a major
|
|
undertaking.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
While playing a DVD, I encountered this error:
|
|
<screen>mplayer: ifo_read.c:1143: ifoRead_C_ADT_internal: Assertion nfo_length / sizeof(cell_adr_t) >= c_adt->nr_of_vobs' failed.</screen>
|
|
</para></question>
|
|
<answer><para>
|
|
This is a known libdvdread 0.9.1/0.9.2 bug. Use <emphasis role="bold">libmpdvdkit2</emphasis>,
|
|
which is present in <application>MPlayer</application> source, and used by default.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
Can I compile libdvdread and libdvdcss on my sweet SPARC under Solaris?
|
|
</para></question>
|
|
<answer><para>
|
|
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 <emphasis role="bold">libmpdvdkit2</emphasis>, which is present
|
|
in <application>MPlayer</application> source, and used by default.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
What about subtitles? Can <application>MPlayer</application> display them?
|
|
</para></question>
|
|
<answer><para>
|
|
Yes. See the <link linkend="dvd">DVD chapter</link>.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
How can I set the region code of my DVD-drive? I don't have Windows!
|
|
</para></question>
|
|
<answer><para>
|
|
Use the <ulink url="http://linvdr.org/projects/regionset/">regionset tool</ulink>.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
Do I need to be (setuid) root to be able to play a DVD?
|
|
</para></question>
|
|
<answer><para>
|
|
No. However you must have the proper rights
|
|
on the DVD device entry (in <filename class="directory">/dev/</filename>).
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
Where can I get libdvdread and libdvdcss packages?
|
|
</para></question>
|
|
<answer><para>
|
|
You don't need to. Use <emphasis role="bold">libmpdvdkit2</emphasis>, which is
|
|
present in the <application>MPlayer</application> source, and used by default.
|
|
You can get the mentioned packages from the
|
|
<ulink url="http://www.dtek.chalmers.se/groups/dvd/">Ogle site</ulink>.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
Is it possible to play/encode only selected chapters?
|
|
</para></question>
|
|
<answer><para>
|
|
Yes, try the <option>-chapter</option> option.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
My DVD playback is sluggish!
|
|
</para></question>
|
|
<answer><para>
|
|
Use the <option>-cache</option> option (described in the man page) and try
|
|
enabling DMA for the DVD drive with the <command>hdparm</command> tool (described
|
|
in the <link linkend="drives">CD chapter</link>).
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I copied a DVD using vobcopy. How do I play/encode it from my hard disk?
|
|
</para></question>
|
|
<answer><para>
|
|
Use the <option>-dvd-device</option> option to refer to the directory
|
|
that contains the files:
|
|
<screen>
|
|
mplayer dvd://1 -dvd-device /path/to/directory
|
|
</screen>
|
|
</para></answer>
|
|
</qandaentry>
|
|
</qandadiv>
|
|
|
|
<qandadiv id="faq-features">
|
|
<title>Feature requests</title>
|
|
<qandaentry>
|
|
<question><para>
|
|
If <application>MPlayer</application> is paused and I try to seek or press any key at all,
|
|
<application>MPlayer</application> ceases to be paused. I would like to be able
|
|
to seek in the paused movie.
|
|
</para></question>
|
|
<answer><para>
|
|
This is very tricky to implement without losing A/V synchronization.
|
|
All attempts have failed so far, but patches are welcome.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I'd like to seek +/- 1 frames instead of 10 seconds.
|
|
</para></question>
|
|
<answer><para>
|
|
You can step forward one frame by pressing <keycap>.</keycap>.
|
|
If the movie was not paused it will be paused afterwards
|
|
(see the man page for details).
|
|
Stepping backwards is unlikely to be implemented anytime soon.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
How can I make <application>MPlayer</application> remember the options I use
|
|
for a particular file, e.g. <filename>movie.avi</filename>?
|
|
</para></question>
|
|
<answer><para>
|
|
Create a file named <filename>movie.avi.conf</filename> with the file-specific
|
|
options in it and put it in <filename class="directory">~/.mplayer</filename> or
|
|
in the same directory as the file.
|
|
</para></answer>
|
|
</qandaentry>
|
|
</qandadiv>
|
|
|
|
<qandadiv id="faq-encoding">
|
|
<title>Encoding</title>
|
|
<qandaentry>
|
|
<question><para>
|
|
How can I encode?
|
|
</para></question>
|
|
<answer><para>
|
|
Read the <link linkend="mencoder"><application>MEncoder</application></link>
|
|
section.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
How can I dump a full DVD title into a file?
|
|
</para></question>
|
|
<answer><para>
|
|
Once you have selected your title, and made sure it plays fine with
|
|
<application>MPlayer</application>, use the option <option>-dumpstream</option>.
|
|
For example:
|
|
<screen>
|
|
mplayer -dumpstream dvd://5 -dumpfile <replaceable>dvd_dump.vob</replaceable>
|
|
</screen>
|
|
will dump the 5th title of the DVD into the file
|
|
<replaceable>dvd_dump.vob</replaceable>
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
How can I create (S)VCDs automatically?
|
|
</para></question>
|
|
<answer><para>
|
|
Try the <filename>mencvcd</filename> script from the <filename class="directory">TOOLS</filename>
|
|
subdirectory. With it you can encode DVDs or other movies to VCD or SVCD format
|
|
and even burn them directly to CD.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
How can I create SVCDs?
|
|
</para></question>
|
|
<answer><para>
|
|
Newer versions of <application>MEncoder</application> can directly
|
|
generate MPEG-2 files that can be used as a base to create a (S)SVCD and
|
|
are likely to be playable out of the box on all platforms (for example
|
|
to share a video from a digital camcorder with your computer-illiterate
|
|
friends).
|
|
<screen>
|
|
mencoder -of mpeg -oac toolame -toolameopts br=224 -srate 44100 \
|
|
-af-adv force=1 -ovc lavc -mpegopts format=xsvcd -vf harddup -ofps 25 \
|
|
-lavcopts vcodec=mpeg2video:mbd=2:keyint=25:vrc_buf_size=917:vrc_minrate=600:vbitrate=2500:vrc_maxrate=2500 \
|
|
<replaceable>in.avi</replaceable> -o <replaceable>xsvcd.mpg</replaceable>
|
|
</screen>
|
|
This will convert the input file <replaceable>in.avi</replaceable> into
|
|
the output file <replaceable>xsvcd.mpg</replaceable>, converting the
|
|
audio with <systemitem class="library">toolame</systemitem> at 224kbps
|
|
and the video with <systemitem class="library">libavcodec</systemitem>.
|
|
</para><para>
|
|
Please note that in order to make the GOP structure SVCD compliant the
|
|
<option>keyint</option> option should be 15 for PAL and 18 for NTSC,
|
|
although very often files with much longer GOPs play correctly (25 should
|
|
never lead to any problem).
|
|
Also, even though leaving out <option>-ofps</option> should work in most
|
|
cases PAL requires <option>-ofps</option> 25 and NTSC
|
|
<option>-ofps</option> 30000/1001.
|
|
</para><para>
|
|
As far as the audio is concerned, SVCD only support MPEG-1 layer II audio,
|
|
therefore you have to use either
|
|
<systemitem class="library">toolame</systemitem>,
|
|
<systemitem class="library">twolame</systemitem>, or as a last resort
|
|
<systemitem class="library">libavcodec</systemitem>'s MPEG-1 layer II
|
|
encoder (as its quality is far from being as good as the former two
|
|
libraries).
|
|
Both <systemitem class="library">toolame</systemitem> and
|
|
<systemitem class="library">twolame</systemitem> follow the same syntax,
|
|
so you depending on which one you managed to install, the example only
|
|
requires a small chance, but if you need to use
|
|
<systemitem class="library">libavcodec</systemitem>'s MPEG-1 layer II
|
|
encoder, replace
|
|
<screen>
|
|
-oac toolame -toolameopts br=224
|
|
</screen>
|
|
by
|
|
<screen>
|
|
-oac lavc -lavcopts acodec=mp2:abitrate=224
|
|
</screen>
|
|
</para><para>
|
|
The resulting file <replaceable>xsvcd.mpg</replaceable> is an extended
|
|
SVCD (that is why it is called xsvcd), mainly because it does not contain
|
|
scan offsets, so if you need to generate an SVCD image out of it, you
|
|
should pass it to
|
|
<ulink url="http://www.gnu.org/software/vcdimager/vcdimager.html">vcdimager</ulink>.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
How can I join two video files?
|
|
</para></question>
|
|
<answer><para>
|
|
MPEG files can be concatenated into a single file with luck.
|
|
For AVI files, you can use <application>MEncoder</application>'s
|
|
multiple file support like this:
|
|
<screen>
|
|
mencoder -ovc copy -oac copy -o out.avi file1.avi file2.avi
|
|
</screen>
|
|
This will only work if the files are of the same resolution and codec.
|
|
You can also try
|
|
<ulink url="http://fixounet.free.fr/avidemux/">avidemux</ulink> and
|
|
<application>avimerge</application> (part of the
|
|
<ulink url="http://www.transcoding.org/">transcode</ulink>
|
|
tool set).
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
How can I fix AVI files with broken index or interleaving?
|
|
</para></question>
|
|
<answer><para>
|
|
Simply copy the video and audio streams into a new file, and
|
|
<application>MEncoder</application> generates the index.
|
|
Of course this cannot fix possible bugs in the video and/or audio streams.
|
|
It also fixes files with broken interleaving, thus the
|
|
<option>-ni</option> option will not be needed for them anymore.
|
|
<screen>
|
|
mencoder -idx <replaceable>input.avi</replaceable> -ovc copy -oac copy -o <replaceable>output.avi</replaceable>
|
|
</screen>
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
How can I fix the aspect ration of an AVI file?
|
|
</para></question>
|
|
<answer><para>
|
|
You can do such a thing thanks to <application>MEncoder</application>'s
|
|
<option>-force-avi-aspect</option> option, which overrides the aspect
|
|
stored in the AVI OpenDML vprp header option. For example:
|
|
<screen>
|
|
mencoder <replaceable>input.avi</replaceable> -ovc copy -oac copy -o <replaceable>output.avi</replaceable> -force-avi-aspect 4/3
|
|
</screen>
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I can't encode DVD subtitles into the AVI!
|
|
</para></question>
|
|
<answer><para>
|
|
You have to specify the <option>-sid</option> option correctly!
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
How can I encode only selected chapters from a DVD?
|
|
</para></question>
|
|
<answer><para>
|
|
Use the <option>-chapter</option> option correctly, like: <option>-chapter 5-7</option>
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I'm trying to work with 2GB+ files on a VFAT file system. Does it work?
|
|
</para></question>
|
|
<answer><para>
|
|
No, VFAT doesn't support 2GB+ files.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
Why is the recommended bitrate printed by <application>MEncoder</application> negative?
|
|
</para></question>
|
|
<answer><para>
|
|
Because the bitrate you encoded the audio with is too large to fit the
|
|
movie on any CD. Check if you have libmp3lame installed properly.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
I can't encode an ASF file to AVI/MPEG-4 (DivX) because it uses 1000 fps.
|
|
</para></question>
|
|
<answer><para>
|
|
Because ASF uses variable frame rate but AVI uses a fixed one, you
|
|
have to set it by hand using <option>-ofps</option>.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
How can I put subtitles in the output file?
|
|
</para></question>
|
|
<answer><para>
|
|
Just pass the <option>-sub <filename></option> (or <option>-sid</option>,
|
|
respectively) option to <application>MEncoder</application>.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
<qandaentry>
|
|
<question><para>
|
|
How do I encode only sound from a music video?
|
|
</para></question>
|
|
<answer><para>
|
|
It's not possible directly, but you can try this (note the
|
|
<emphasis role="bold">&</emphasis> at the end of
|
|
<command>mplayer</command> command):
|
|
<screen>
|
|
mkfifo encode
|
|
mplayer -ao pcm -aofile encode dvd://1 &
|
|
lame <replaceable>your_opts</replaceable> encode music.mp3
|
|
rm encode
|
|
</screen>
|
|
This allows you to use any encoder, not only <application>LAME</application>,
|
|
just replace <command>lame</command> with your favorite audio encoder in the
|
|
above command.
|
|
</para></answer>
|
|
</qandaentry>
|
|
|
|
</qandadiv>
|
|
</qandaset>
|
|
|
|
</chapter>
|