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| author | nell <nell@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2002-05-10 11:17:41 +0000 |
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| committer | nell <nell@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2002-05-10 11:17:41 +0000 |
| commit | 6f6ba55b51d52e4e4ef46f303e6ec8bcfd193dd3 (patch) | |
| tree | b6a20b063fd40c4b43c47316c9e3edb569fd6b71 /DOCS/Polish/sound.html | |
| parent | a07a3f976d12c7e8cc6f6aee0ca1a4a1261ffb6d (diff) | |
| download | mpv-6f6ba55b51d52e4e4ef46f303e6ec8bcfd193dd3.tar.bz2 mpv-6f6ba55b51d52e4e4ef46f303e6ec8bcfd193dd3.tar.xz | |
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diff --git a/DOCS/Polish/sound.html b/DOCS/Polish/sound.html index 6e067c6bb8..3a3ebaca4b 100644 --- a/DOCS/Polish/sound.html +++ b/DOCS/Polish/sound.html @@ -1,143 +1,292 @@ <HTML> + +<HEAD> +<STYLE> + .text + {font-family : Verdana, Arial, Helvetica, sans-serif; + font-size : 14px;} +</STYLE> +</HEAD> + <BODY BGCOLOR=white> -<FONT face="Verdana, Arial, Helvetica, sans-serif" size=2> +<FONT CLASS="text"> -<P><B><A NAME=2.3.2>2.3.2. Audio output devices</A></P></B> +<P><B><A NAME=2.3.2>2.3.2. Audio output devices</A></B></P> <P><B>MPlayer</B>'s audio interface is called <I>libao2</I>. It currently -contains these drivers :</P> +contains these drivers:</P> <TABLE BORDER=0> -<TD COLSPAN=4><P><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>General:</B></P></TD> +<TR><TD COLSPAN=4><P><B><FONT CLASS="text">General:</B></P></TD></TR> -<TR><TD> </TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>oss</TD><TD> </TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS (ioctl) driver</TD></TR> -<TR><TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>sdl</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>SDL driver (supports up/downsampling, <B>ESD</B>, <B>ARTS</B> etc)</TD></TR> -<TR><TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>nas</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>NAS (Network Audio System) driver</TD></TR> -<TR><TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>alsa5</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>native ALSA 0.5 driver</TD></TR> -<TR><TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>alsa9</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>native ALSA 0.9 driver (works, but has problems -> use OSS)</TD></TR> -<TR><TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>sun</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>SUN audio driver (/dev/audio) for BSD and Solaris8 users</TD></TR> +<TR><TD> </TD><TD VALIGN=top><FONT CLASS="text">oss</TD><TD> </TD><TD><FONT CLASS="text">OSS (ioctl) driver</TD></TR> +<TR><TD></TD><TD VALIGN=top><FONT CLASS="text">sdl</TD><TD></TD><TD><FONT CLASS="text">SDL driver (supports up/downsampling, <B>ESD</B>, <B>ARTS</B> etc)</TD></TR> +<TR><TD></TD><TD VALIGN=top><FONT CLASS="text">nas</TD><TD></TD><TD><FONT CLASS="text">NAS (Network Audio System) driver</TD></TR> +<TR><TD></TD><TD VALIGN=top><FONT CLASS="text">alsa5</TD><TD></TD><TD><FONT CLASS="text">native ALSA 0.5 driver</TD></TR> +<TR><TD></TD><TD VALIGN=top><FONT CLASS="text">alsa9</TD><TD></TD><TD><FONT CLASS="text">native ALSA 0.9 driver (works, but has problems -> use OSS)</TD></TR> +<TR><TD></TD><TD VALIGN=top><FONT CLASS="text">sun</TD><TD></TD><TD><FONT CLASS="text">SUN audio driver (/dev/audio) for BSD and Solaris8 users</TD></TR> </TABLE> -<P>The fact is, Linux soundcard drivers are usually bad, and always as -incompatible as they can be. It MAY take a while to find your optimal settings.</P> -<P><UL> -<LI>if you have OSS as driver, first try with <I>-ao oss</I> (this is the default). -If you experience glitches, halts or anything out of the ordinary, have a -look at <I>-ao sdl</I> (NOTE: of course you'll have to have a new SDL library and its -devel pair installed). It helps in a lot of cases (it also supports ESD, ARTS, and -up/downsampling. /esd is GNOME's, arts is KDE's sound daemon/).</LI> -<LI>if you have ALSA version 0.5, then you ALMOST always have to use <I>-ao alsa5</I> , -since 0.5 has buggy OSS emulation code, and will <B>crash MPlayer</B> with +<P>Fact is, Linux sound card drivers have compatibility problems. +It <B>may</B> take a while to find your optimal settings.</P> + +<UL> +<LI>If you have an OSS driver, first try <CODE>-ao oss</CODE> (this is the default). +If you experience glitches, halts or anything out of the ordinary, try +<CODE>-ao sdl</CODE> (NOTE: you need to have SDL libraries and header files +installed). The SDL audio driver helps in a lot of cases and also supports ESD, +ARTS, and up/downsampling. (ESD is the sound daemon from GNOME, ARTS is from KDE.)</LI> +<LI>If you have ALSA version 0.5, then you almost always have to use <CODE>-ao alsa5</CODE> , +since ALSA 0.5 has buggy OSS emulation code, and will <B>crash MPlayer</B> with a message like this:<BR> - <UL> - <CODE>DEMUXER: Too many (945 in 8390980 bytes) video packets in the buffer!</CODE></UL> -</LI> -<LI>if you have ALSA version 0.9, use <I>-ao oss</I> or <I>-ao sdl</I> as you -wish. You can also use <I>-ao alsa9</I> as it works now, however it has many -problems (losing sync, disappearing audio, etc).</LI> -</UL></P> +<CODE>DEMUXER: Too many (945 in 8390980 bytes) video packets in the buffer!</CODE></LI> +<LI>If you have ALSA version 0.9 you may choose between <CODE>-ao oss</CODE> and +<CODE>-ao sdl</CODE>. You can also use <CODE>-ao alsa9</CODE>. It works, but +there are problems like lost sync and disappearing audio.</LI> +</UL> <P>On <B>Solaris/FreeBSD</B> systems, use the SUN audio driver with the -<I>-ao sun</I> option, otherwise you'll have no video, nor audio playing.</P> +<CODE>-ao sun</CODE> option, otherwise neither video nor audio will work.</P> -<P><B><A NAME=2.3.2.1>2.3.2.1. Soundcard experiences, recommendations</A></B></P> +<P><B><A NAME=2.3.2.1>2.3.2.1. Sound Card experiences, recommendations</A></B></P> -<P><TABLE BORDER=0 WIDTH=100%> -<TD COLSPAN=3><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>VIA onboard chipset (via82cxxx) 48Khz only</B></TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Driver:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2> from <A HREF="http://sourceforge.net/project/showfiles.php?group_id=3242&release_id=59602">here</A></TD><TR> +<TABLE BORDER=0 WIDTH="100%"> +<TR><TD COLSPAN=3><B><FONT CLASS="text">VIA onboard chipset (via82cxxx) 48kHz only</B></TD><TR> +<TD></TD><TD><FONT CLASS="text">Driver:</TD><TD><FONT CLASS="text"> from <A HREF="http://sourceforge.net/project/showfiles.php?group_id=3242&release_id=59602">here</A></TD><TR> -<TD COLSPAN=3><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Aureal Vortex 2</B></TD><TR> -<TD> </TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>no driver</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS/Pro:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OK</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>ALSA:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>no driver</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Max kHz:</TD><TD>48</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Driver:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2><A HREF="http://aureal.sourceforge.net">aureal.sourceforge.net</A></TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Driver2:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2> from <A HREF="http://makacs.poliod.hu/~pontscho/aureal/au88xx-1.1.3.tar.bz2">here</A><BR> +<TD COLSPAN=3><B><FONT CLASS="text">Aureal Vortex 2</B></TD><TR> +<TD> </TD><TD><FONT CLASS="text">OSS:</TD><TD><FONT CLASS="text">no driver</TD><TR> +<TD></TD><TD><FONT CLASS="text">OSS/Pro:</TD><TD><FONT CLASS="text">OK</TD><TR> +<TD></TD><TD><FONT CLASS="text">ALSA:</TD><TD><FONT CLASS="text">no driver</TD><TR> +<TD></TD><TD><FONT CLASS="text">Max kHz:</TD><TD>48</TD><TR> +<TD></TD><TD><FONT CLASS="text">Driver:</TD><TD><FONT CLASS="text"><A HREF="http://aureal.sourceforge.net">aureal.sourceforge.net</A></TD><TR> +<TD></TD><TD><FONT CLASS="text">Driver2:</TD><TD><FONT CLASS="text"> from <A HREF="http://makacs.poliod.hu/~pontscho/aureal/au88xx-1.1.3.tar.bz2">here</A><BR> (<I>buffer size increased to 32k</I>)</TD><TR> -<TD COLSPAN=3><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>GUS PnP</B></TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>no driver</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS/Pro:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OK</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>ALSA:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OK</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Max kHz:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>48</TD><TR> - -<TD COLSPAN=3><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>SB Live!</B></TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OK</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>ALSA:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>(?)</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Max kHz:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>48</TD><TR> - -<TD COLSPAN=3><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>SB AWE 64</B></TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>max 44kHz</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>ALSA:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>48kHz sounds shit</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Max kHz:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>48</TD><TR> - -<TD COLSPAN=3><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Gravis UltraSound ACE</B></TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>max 44Khz. <I>not OK</I></TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>ALSA:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OK</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Max kHz:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>48</TD><TR> - -<TD COLSPAN=3><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Gravis UltraSound MAX</B></TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OK</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>ALSA:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OK (?)</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Max kHz:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>48</TD><TR> - -<TD COLSPAN=3><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>ESS 688</B></TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OK</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>ALSA:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OK (?)</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Max kHz:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>48</TD><TR> - -<TD COLSPAN=3><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>C-Media cards (which ones?)</B></TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>not OK (hissing) (?)</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>ALSA:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OK (?)</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Max kHz:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>?</TD><TR> - -<TD COLSPAN=3><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Yamaha cards (*ymf*)</B></TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>not OK (?) (maybe -ao sdl)</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>ALSA:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OK only with ALSA 0.5 with OSS emulation <B>AND</B> <I>-ao sdl</I> (!) (?)</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Max kHz:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>?</TD><TR> - -<TD COLSPAN=3><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Cards with envy24 chips (like Terratec EWS88MT)</B></TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>?</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS/Pro:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OK</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>ALSA:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>?</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Max kHz:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>?</TD><TR> - -<TD COLSPAN=3><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>PC Speaker or DAC</B></TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OSS:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OK (<I>use the SDL driver : -ao sdl</I>)</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>ALSA:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>no driver</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Max kHz:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>the driver emulates 44.1 maybe more</TD><TR> -<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Driver:</TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2><A HREF="ftp://ftp.infradead.org/pub/pcsp">ftp://ftp.infradead.org/pub/pcsp</A></TD><TR> -</TABLE></P> - -<P><UL> -<LI>on Linux, use at least kernel 2.4 if possible, 2.2 isn't tested -<LI>if sound clicks when playing from CD-ROM, turn on IRQ unmasking ! - for example "hdparm -u1 /dev/cdrom" (see "man hdparm" !!!) - This is recommended anyways... (for XMMS, etc...) - Read section <A HREF="cd-dvd.html#4.1">4.1</A>. -<LI>don't use your soundcard by other application ( for ex. XMMS ) ! - if you use ESD, start MPlayer with the '-vo sdl:esd' option ! -<LI>Please tell us how MPlayer and your soundcard(s) worked together! -</UL></P> - - -<P><B><A NAME=2.3.2.2>2.3.2.2. Audio plugins</B></P> - -<P><B><A NAME=2.3.2.2.1>2.3.2.2.1. Up/Downsampling</B></P> - -<P><B>MPlayer</B> fully supports up/downsampling of audio stream. -It is not autodetected, so you have to specify it explicitly even when -for example you have a max 44.1Khz capable soundcard, and the audio -is 48Khz. Also, this functionality is currently unimplemented in -<B>MEncoder</B>.</P> - -<P>Usage :<BR> +<TD COLSPAN=3><B><FONT CLASS="text">GUS PnP</B></TD><TR> +<TD></TD><TD><FONT CLASS="text">OSS:</TD><TD><FONT CLASS="text">no driver</TD><TR> +<TD></TD><TD><FONT CLASS="text">OSS/Pro:</TD><TD><FONT CLASS="text">OK</TD><TR> +<TD></TD><TD><FONT CLASS="text">ALSA:</TD><TD><FONT CLASS="text">OK</TD><TR> +<TD></TD><TD><FONT CLASS="text">Max kHz:</TD><TD><FONT CLASS="text">48</TD><TR> + +<TD COLSPAN=3><B><FONT CLASS="text">SB Live!</B></TD><TR> +<TD></TD><TD><FONT CLASS="text">OSS:</TD><TD><FONT CLASS="text">Analog OK, SP/DIF not working</TD><TR> +<TD></TD><TD><FONT CLASS="text">ALSA:</TD><TD><FONT CLASS="text">Both OK</TD><TR> +<TD></TD><TD><FONT CLASS="text">Max kHz:</TD><TD><FONT CLASS="text">192</TD><TR> + +<TD COLSPAN=3><B><FONT CLASS="text">SB AWE 64</B></TD><TR> +<TD></TD><TD><FONT CLASS="text">OSS:</TD><TD><FONT CLASS="text">max 44kHz</TD><TR> +<TD></TD><TD><FONT CLASS="text">ALSA:</TD><TD><FONT CLASS="text">48kHz sounds bad</TD><TR> +<TD></TD><TD><FONT CLASS="text">Max kHz:</TD><TD><FONT CLASS="text">48</TD><TR> + +<TD COLSPAN=3><B><FONT CLASS="text">Gravis UltraSound ACE</B></TD><TR> +<TD></TD><TD><FONT CLASS="text">OSS:</TD><TD><FONT CLASS="text">not OK</TD><TR> +<TD></TD><TD><FONT CLASS="text">ALSA:</TD><TD><FONT CLASS="text">OK</TD><TR> +<TD></TD><TD><FONT CLASS="text">Max kHz:</TD><TD><FONT CLASS="text">44</TD><TR> + +<TD COLSPAN=3><B><FONT CLASS="text">Gravis UltraSound MAX</B></TD><TR> +<TD></TD><TD><FONT CLASS="text">OSS:</TD><TD><FONT CLASS="text">OK</TD><TR> +<TD></TD><TD><FONT CLASS="text">ALSA:</TD><TD><FONT CLASS="text">OK (?)</TD><TR> +<TD></TD><TD><FONT CLASS="text">Max kHz:</TD><TD><FONT CLASS="text">48</TD><TR> + +<TD COLSPAN=3><B><FONT CLASS="text">ESS 688</B></TD><TR> +<TD></TD><TD><FONT CLASS="text">OSS:</TD><TD><FONT CLASS="text">OK</TD><TR> +<TD></TD><TD><FONT CLASS="text">ALSA:</TD><TD><FONT CLASS="text">OK (?)</TD><TR> +<TD></TD><TD><FONT CLASS="text">Max kHz:</TD><TD><FONT CLASS="text">48</TD><TR> + +<TD COLSPAN=3><B><FONT CLASS="text">C-Media cards (which ones?)</B></TD><TR> +<TD></TD><TD><FONT CLASS="text">OSS:</TD><TD><FONT CLASS="text">not OK (hissing) (?)</TD><TR> +<TD></TD><TD><FONT CLASS="text">ALSA:</TD><TD><FONT CLASS="text">OK (?)</TD><TR> +<TD></TD><TD><FONT CLASS="text">Max kHz:</TD><TD><FONT CLASS="text">?</TD><TR> + +<TD COLSPAN=3><B><FONT CLASS="text">Yamaha cards (*ymf*)</B></TD><TR> +<TD></TD><TD><FONT CLASS="text">OSS:</TD><TD><FONT CLASS="text">not OK (?) (maybe <CODE>-ao sdl</CODE>)</TD><TR> +<TD></TD><TD><FONT CLASS="text">ALSA:</TD><TD><FONT CLASS="text">OK only with ALSA 0.5 with OSS emulation <B>AND</B> <CODE>-ao sdl</CODE> (!) (?)</TD><TR> +<TD></TD><TD><FONT CLASS="text">Max kHz:</TD><TD><FONT CLASS="text">?</TD><TR> + +<TD COLSPAN=3><B><FONT CLASS="text">Cards with envy24 chips (like Terratec EWS88MT)</B></TD><TR> +<TD></TD><TD><FONT CLASS="text">OSS:</TD><TD><FONT CLASS="text">?</TD><TR> +<TD></TD><TD><FONT CLASS="text">OSS/Pro:</TD><TD><FONT CLASS="text">OK</TD><TR> +<TD></TD><TD><FONT CLASS="text">ALSA:</TD><TD><FONT CLASS="text">?</TD><TR> +<TD></TD><TD><FONT CLASS="text">Max kHz:</TD><TD><FONT CLASS="text">?</TD><TR> + +<TD COLSPAN=3><B><FONT CLASS="text">PC Speaker or DAC</B></TD><TR> +<TD></TD><TD><FONT CLASS="text">OSS:</TD><TD><FONT CLASS="text">OK (Use the SDL driver: <CODE>-ao sdl</CODE>)</TD><TR> +<TD></TD><TD><FONT CLASS="text">ALSA:</TD><TD><FONT CLASS="text">no driver</TD><TR> +<TD></TD><TD><FONT CLASS="text">Max kHz:</TD><TD><FONT CLASS="text">The driver emulates 44.1, maybe more.</TD><TR> +<TD></TD><TD><FONT CLASS="text">Driver:</TD><TD><FONT CLASS="text"><A HREF="ftp://ftp.infradead.org/pub/pcsp">ftp://ftp.infradead.org/pub/pcsp</A></TD> +</TABLE> + +<UL> +<LI>On Linux, a 2.4.x kernel is highly recommended. Kernel 2.2 is not tested.</LI> +<LI>If sound clicks when playing from CD-ROM, turn on IRQ unmasking, e.g. + <CODE>hdparm -u1 /dev/cdrom</CODE> (<CODE>man hdparm</CODE>). This is + generally beneficial and described more detailed in the + <A HREF="cd-dvd.html#4.1">CD-ROM section</A>.</LI> +<LI>Sharing your sound card with another application like XMMS is <B>strongly discouraged</B>! + If the other sound application is using ESD, start <B>MPlayer</B> with the <CODE>-vo sdl:esd</CODE> option + to combine both sound streams! In fact, the option <CODE>-vo sdl:esd</CODE> could be used with ESD + even when playing <B>Mplayer</B> alone.</LI> +<LI>Feedback to this document is welcome. Please tell us how <B>MPlayer</B> and + your sound card(s) worked together.</LI> +</UL> + + +<P><B><A NAME=2.3.2.2>2.3.2.2. Audio plugins</A></B></P> + +<P><B>MPlayer</B> has support for audio plugins. Audio plugins can be used for + changing the properties of the audio data before the sound reaches the sound + card. They are enabled using the <CODE>-aop</CODE> switch which takes a + <CODE>list=plugin1,plugin2,...</CODE> argument. The <CODE>list</CODE> argument + is required and determines which plugins should be used and in which order they + should be executed. Example: +</P> + +<P> <CODE>mplayer media.avi -aop list=resample,format</CODE></P> + +<P>would run the sound through the resampling plugin followed by the format + plugin. +</P> + +<P>The plugins can also have switches that change their behavior. These + switches are explained in detail in the sections below. A plugin will execute + using default settings if its switches are omitted. Here is an example of how + to use plugins in combination with plugin specific switches: +</P> + +<P> <CODE>mplayer media.avi -aop + list=resample,format:fout=44100:format=0x8</CODE> +</P> + +<P>would set the output frequency of the resample plugin to 44100Hz and the + output format of the format plugin to AFMT_U8. +</P> + +<P>Currently audio plugins can not be used in <B>MEncoder</B>.</P> + + +<P><B><A NAME=2.3.2.2.1>2.3.2.2.1. Up/Downsampling</A></B></P> + +<P><B>MPlayer</B> fully supports up/downsampling of the sound. This plugin can + be used if you have a fixed frequency sound card or if you are + stuck with an old sound card that is only capable of max 44.1kHz. + Limitations in your hardware are not auto detected, so you have to specify + the sample frequency explicitly. This plugin has one switch: + <CODE>fout</CODE> which is used for setting the desired output sample + frequency. It defaults to 48kHz, and is given in + <Hz>. +</P> + +<P>Usage:<BR> <CODE>mplayer media.avi -aop list=resample:fout=<required frequency in Hz, like 44100></CODE></P> +<P>Note that the output frequency should not be scaled up from the default value. + Scaling up will cause the audio and video streams to be played in slow motion + in addition to audio distortion.</P> + +<P><B><A NAME=2.3.2.2.2>2.3.2.2.2. Surround Sound decoding</A></B></P> + +<P><B>MPlayer</B> has an audio plugin that can decode matrix encoded +surround sound. Dolby Surround is an example of a matrix encoded format. +Many files with 2 channel audio actually contain matrixed surround sound. +To use this feature you need a sound card supporting at least 4 channels.</P> + +<P>Usage:<BR> + <CODE>mplayer media.avi -aop list=surround</CODE></P> + + +<P><B><A NAME=2.3.2.2.3>2.3.2.2.3. Sample format converter</A></B></P> + +<P>If your sound card driver does not support signed 16bit <CODE>int</CODE> data type, + this plugin can + be used to change the format to one which your sound card can understand. It + has one switch, <CODE>format</CODE>, which can be set to one of the numbers + found in <CODE>libao2/afmt.h</CODE>. This plugin is hardly ever needed and is + intended for advanced users. Keep in mind that this plugin only changes the + sample format and not the sample frequency or the number of channels. +</P> + +<P>Usage:<BR> + <CODE>mplayer media.avi -aop + list=format:format=<required output format></CODE> +</P> + + +<P><B><A NAME=2.3.2.2.4>2.3.2.2.4. Delay</A></B></P> + +<P>This plugin delays the sound and is intended as an example of how to develop + new plugins. It can not be used for anything useful from a users perspective + and is mentioned here for the sake of completeness only. Do not use this + plugin unless you are a developer.</P> + +<P><B><A NAME=2.3.2.2.5>2.3.2.2.5. Software volume control</A></B></P> + +<P>This plugin is a software replacement for the volume control, and + can be used on machines with a broken mixer device. It can also be + used if one wants to change the output volume of <B>MPlayer</B> + without changing the PCM volume setting in the mixer. It has one + switch <CODE>volume</CODE> that is used for setting the initial + sound level. The initial sound level can be set to values between 0 + and 255 and defaults to 101 which equals 0dB amplification. Use this + plugin with caution since it can reduce the signal to noise ratio of + the sound. In most cases it is best to set the level for the PCM + sound to max, leave this plugin out and control the output level to + your speakers with the master volume control of the mixer. If there is an + external amplifier connected to the computer (this is almost always + the case), the noise level can be minimized by adjusting the master + level and the volume knob on the amplifier until the hissing noise + in the background is gone. +</P> + +<P>Usage:<BR> + <CODE>mplayer media.avi -aop + list=volume:volume=<0-255></CODE> +</P> + +<P>This plugin also has compressor or "soft-clipping" capabilities. + Compression can be used if the dynamic range of the sound is very + high or if the dynamic range of the loudspeakers is very + low. Be aware that this feature creates distortion and should be + considered a last resort. +</P> + +<P>Usage:<BR> + <CODE>mplayer media.avi -aop + list=volume:softclip</CODE> +</P> + + +<P><B><A NAME=2.3.2.2.6>2.3.2.2.6. Extrastereo</A></B></P> + +<P>This plugin (linearly) increases the difference between left and right + channels (like the XMMS extrastereo plugin) which gives some sort of "live" + effect to playback. +</P> + +<P>Usage:<BR> + <CODE>mplayer media.avi -aop list=extrastereo</CODE><BR> + <CODE>mplayer media.avi -aop list=extrastereo:mul=3.45</CODE></P> + +<P>The default coefficient (<CODE>mul</CODE>) is a float number that defaults + to 2.5. If you set it to 0.0, you will have mono sound (average of both + channels). If you set it to 1.0, sound will be unchanged.</P> + + +<P><B><A NAME=2.3.2.2.7>2.3.2.2.7. Volume normalizer</A></B></P> + +<P>This plugin maximizes the volume without distorting the sound.</P> + +<P>Usage:<BR> + <CODE>mplayer media.avi -aop list=volnorm</CODE><BR> + + +<P><B><A NAME=2.3.2.2.8>2.3.2.2.8. Surround</A></B></P> + +<P>Someone should document something, sometime.</P> </BODY> </HTML> |