mirror of
https://github.com/mpv-player/mpv
synced 2024-12-26 00:42:57 +00:00
e492718d4d
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9778 b3059339-0415-0410-9bf9-f77b7e298cf2
181 lines
5.8 KiB
XML
181 lines
5.8 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<appendix id="bugs">
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<title>Known bugs</title>
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<sect1 id="bugs-special">
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<title>Special system/CPU-specific bugs/problems</title>
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<itemizedlist>
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<listitem>
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<para>SIGILL (signal 4) on P3 using 2.2.x kernels:</para>
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<para>Problem: kernel 2.2.x doesn't have proper (working) SSE support</para>
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<para>Solution: upgrade kernel to 2.4.x</para>
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<para>Workaround: <command>./configure --disable-sse</command></para>
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</listitem>
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<listitem>
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<para>General SIGILL (signal 4):</para>
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<para>Problem: you compiled and run MPlayer on different machines
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(for example compiled on P3 and running on Celeron)</para>
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<para>Solution: compile MPlayer on the same machine where you will use it!</para>
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<para>Workaround: <command>./configure --disable-sse</command> etc. options</para>
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</listitem>
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<listitem>
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<para>"Internal buffer inconsistency" during MEncoder run:</para>
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<para>Problem: known problem when lame < 3.90 was compiled with gcc 2.96 or 3.x.</para>
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<para>Solution: use lame >=3.90.</para>
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<para>Workaround: compile lame with gcc 2.95.x and remove any already installed
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lame packages, they may have been compiled with gcc 2.96.</para>
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</listitem>
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<listitem>
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<para>Messed up MP2/MP3 sound on PPC:</para>
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<para>Problem: known GCC miscompilation bug on PPC platforms, no fix yet.</para>
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<para>Workaround: use FFmpeg's (slow) MP1/MP2/MP3 decoder (<option>-ac ffmpeg</option>)</para>
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</listitem>
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<listitem>
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<para>sig11 in libmpeg2, when scaling+encoding:</para>
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<para>Problem: known GCC 2.95.2 MMX bug, upgrade to 2.95.3.</para>
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</listitem>
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</itemizedlist>
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</sect1>
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<sect1 id="bugs-audio">
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<title>Various A-V sync and other audio problems</title>
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<sect2 id="bugs-delay-all">
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<title>General audio delay or jerky sound (exists with all or many files)</title>
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<itemizedlist>
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<listitem><para>
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most common: buggy audio driver! - try to use different drivers, try ALSA 0.9 OSS
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emulation with <option>-ao oss</option>, also try <option>-ao sdl</option>,
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sometimes it helps. If your file plays fine with <option>-nosound</option>, then you can be sure
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it's sound card (driver) problem.
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</para></listitem>
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</itemizedlist>
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<itemizedlist>
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<listitem>
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<para>audio buffer problems (buffer size badly detected)</para>
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<para>Workaround: MPlayer's <option>-abs</option> option</para>
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</listitem>
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</itemizedlist>
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<itemizedlist>
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<listitem><para>
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samplerate problems - maybe your card doesn't support the samplerate used in your
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files - try the resampling plugin (<option>-af resample=...</option>)
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</para></listitem>
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</itemizedlist>
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<itemizedlist>
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<listitem>
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<para>slow machine (CPU or VGA)</para>
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<para>try with <option>-vo null</option>, if it plays well, then you have slow
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VGA card/driver</para>
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<para>Workaround: buy a faster card or read this documentation about how to
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speed up</para>
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<para>Also try <option>-framedrop</option></para>
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</listitem>
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</itemizedlist>
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</sect2>
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<sect2 id="bugs-delay-specific">
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<title>Audio delay/de-sync specific to one or a few files</title>
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<itemizedlist>
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<listitem>
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<para>bad file</para>
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<para>
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Workaround:
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<itemizedlist>
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<listitem>
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<para><option>-ni</option> or <option>-nobps</option> option (for
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non-interleaved or bad files)</para>
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<para>and/or</para>
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</listitem>
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<listitem>
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<para><option>-mc 0</option>(required for files with badly
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interleaved VBR audio)</para>
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<para>and/or</para>
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</listitem>
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<listitem>
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<para><option>-delay</option> or <keycap>+</keycap>/<keycap>-</keycap>
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keys at runtime to adjust delay</para>
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</listitem>
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</itemizedlist>
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If none of these help, please upload the file, we'll check (and fix).
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</para>
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</listitem>
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<listitem>
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<para>your sound card doesn't support 48kHz playback</para>
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<para>Workaround: buy a better sound card... or try to decrease fps by 10% (use
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<option>-fps 27</option> for a 30fps movie) or use the resample plugin</para>
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</listitem>
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<listitem>
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<para>slow machine(if A-V is not around 0, and the last number in the status
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line increasing)</para>
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<para>Workaround: <option>-framedrop</option></para>
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</listitem>
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</itemizedlist>
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</sect2>
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<sect2 id="bugs-nosound">
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<title>No sound at all</title>
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<itemizedlist>
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<listitem>
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<para>your file uses an unsupported audio codec</para>
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<para>read the documentation and help us adding support for it</para>
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</listitem>
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</itemizedlist>
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</sect2>
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<sect2 id="bugs-nopicture">
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<title>No picture at all (just plain grey/green window)</title>
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<itemizedlist>
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<listitem>
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<para>your file uses an unsupported video codec</para>
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<para>Workaround: read the documentation and help us adding support for it</para>
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</listitem>
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<listitem>
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<para>
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auto-selected codec can't decode the file, try to select another using
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<option>-vc</option> or <option>-vfm</option> options
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</para>
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</listitem>
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<listitem>
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<para>
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you try to play DivX 3.x file with OpenDivX decoder or XviD
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(<option>-vc odivx</option>) - install Divx4Linux and recompile player
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</para>
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</listitem>
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</itemizedlist>
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</sect2>
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<sect2 id="bugs-video">
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<title>Video-out problems</title>
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<para>
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First note: options <option>-fs -vm</option> and <option>-zoom</option> are just
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recommendations, not (yet) supported by all drivers. So it isn't a bug if it
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doesn't work. Only a few driver supports scaling/zooming, don't expect this from
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x11 or dga.
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</para>
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<formalpara>
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<title>OSD/sub flickering</title>
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<para>
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<itemizedlist>
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<listitem><para>x11 driver: sorry, it can't be fixed now</para></listitem>
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<listitem><para>xv driver: use <option>-double</option> option</para></listitem>
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</itemizedlist>
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</para>
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</formalpara>
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<formalpara>
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<title>Green image using mga_vid (<option>-vo mga</option> / <option>-vo xmga</option>)</title>
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<para>
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<itemizedlist>
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<listitem><para>mga_vid misdetected your card's RAM amount, reload it using
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<option>mga_ram_size</option> option
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</para></listitem>
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</itemizedlist>
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</para>
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</formalpara>
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</sect2>
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</sect1>
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</appendix>
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