mirror of
https://github.com/mpv-player/mpv
synced 2024-12-13 18:36:09 +00:00
3e17226e72
Same problem, same solution, one was not labeled, one was labeled 'Workaround', where both are ideal solutions. git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@20083 b3059339-0415-0410-9bf9-f77b7e298cf2
178 lines
5.2 KiB
XML
178 lines
5.2 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision$ -->
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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 <application>MPlayer</application> on
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different machines (for example compiled on P3 and running on Celeron)</para>
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<para>Solution: compile <application>MPlayer</application> on the same machine
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where you will use it!</para>
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<para>Workaround: You can forget all this by configuring with the
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<option>--enable-runtime-cpudetection</option> option or you can
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disable particular CPU instruction sets with more specific options (like
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<option>--disable-mmx</option>, <option>--disable-3dnow</option>, etc).
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</para>
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</listitem>
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<listitem>
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<para>Crashes when dumping streams:</para>
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<para>Problem: core dump</para>
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<para>Solution: Don't panic. Make sure you know where your towel is.</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 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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<listitem>
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<para>audio buffer problems (buffer size badly detected)</para>
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<para>Workaround: <application>MPlayer</application>'s <option>-abs</option> option</para>
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</listitem>
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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 filter (<option>-af resample=...</option>)
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</para></listitem>
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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 filter</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>Solution: 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>Solution: 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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</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 that the options <option>-fs</option>, <option>-vm</option> and
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<option>-zoom</option> are not supported by all drivers. Plus, not all
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drivers support scaling/zooming in hardware.
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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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