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<P><B><A NAME=4.1>4.1. CD-ROM drives</A></B></P>
<P>Playing standard Video CDs:</P>
<P><CODE>mplayer -vcd &lt;track&gt; [-cdrom-device device]</CODE></P>
<P>Examples:<BR>
<CODE>mplayer -vcd 1<BR>
mplayer -fs -vcd 2 -cdrom-device /dev/hdc</CODE></P>
Notes:
<UL>
<LI>Do <B>not</B> mount VCD disks and play DAT files directly! It may work
under Windows but will not under Linux. You have to play VCDs with the
<CODE>-vcd</CODE> option.</LI>
<LI>VCD disks usually have 2 tracks: a data track (containing autostart
Windows playback program, karaoke data etc) and a mode-2 track (the movie).
So try <CODE>-vcd 2</CODE> first.</LI>
<LI>The default VCD device is <CODE>/dev/cdrom</CODE>. If your setup differs,
make a symlink, or specify the correct device on the command line with the
<CODE>-cdrom-device</CODE> option.</LI>
</UL>
<P>Linux documentation excerpt:</P>
<P>Some CD-ROM drives are capable of changing their head speed. There are
several reasons for changing the speed of a CD-ROM drive. Badly pressed
CD-ROMs may benefit from less-than-maximum head speed. Modern CD-ROM drives
can obtain very high head speeds. It has been reported that these drives can
make read errors at these high speeds, reducing the speed can prevent data
loss under these circumstances. Finally, some of these drives can make an
annoyingly loud noise, which a lower speed may reduce.</P>
<P>You can reduce the drive speed with hdparm or a program called setcd.
It works like this:</P>
<P>&nbsp;&nbsp;&nbsp;&nbsp;<CODE>hdparm -E [speed] [cdrom device]</CODE></P>
<P>&nbsp;&nbsp;&nbsp;&nbsp;<CODE>setcd -x [speed] [cdrom device]</CODE></P>
<P>You can also try</P>
<P>&nbsp;&nbsp;&nbsp;&nbsp;<CODE>echo current_speed:4 >/proc/ide/[cdrom device]/settings</CODE></P>
<P>but you will need root privileges. The following command may also help:</P>
<P>&nbsp;&nbsp;&nbsp;&nbsp;<CODE>echo file_readahead:2000000 >/proc/ide/[cdrom device]/settings</CODE></P>
<P>This sets prefetched file reading to 2MB, which helps with scratched CD-ROMs.
It is recommended that you also tune your CD-ROM drive with hdparm:</P>
<P>&nbsp;&nbsp;&nbsp;&nbsp;<CODE>hdparm -d1 -a8 -u1 (cdrom device)</CODE></P>
<P>This enables DMA access, read-ahead, and IRQ unmasking (read the hdparm man
page for a detailed explanation).</P>
<P>Please refer to "<CODE>/proc/ide/[cdrom device]/settings</CODE>" for
fine-tuning your CD-ROM.</P>
<P><B><A NAME=4.2>4.2. DVD playback</A></B></P>
<P><B>MPlayer</B> uses <CODE>libdvdread</CODE> and <CODE>libdvdcss</CODE> for
DVD decryption and playback. These two libraries are contained in the
<CODE>libmpdvdkit/</CODE> subdirectory of the <B>MPlayer</B> source tree, you
do not have to install them separately. We opted for this solution because
we had to fix a libdvdread bug, and apply a patch which adds
<B>cracked CSS keys caching support</B> to libdvdcss. This results in a large
speed increase because the keys do not have to be cracked every time before
playing. The cracked keys are stored in the
<CODE>~/.mplayer/DVDKeys</CODE> directory.</P>
<P><B>MPlayer</B> can also use system-wide <CODE>libdvdread</CODE> and
<CODE>libdvdcss</CODE> libraries, but this solution is <B>not</B> recommended,
as it can result in bugs, library incompatibilities, and slower speed.</P>
<P>Support for DVD navigation via <CODE>dvdnav</CODE> is being worked on, but
not finished yet.</P>
<P><B>Old-style DVD support - <I>OPTIONAL</I></B></P>
<P>Useful if you want to play encoded VOBs from hard disk. Compile and
install <B>libcss</B> 0.0.1 (not newer) for this (If <B>MPlayer</B> fails to
detect it, use the <CODE>-csslib /path/to/libcss.so</CODE> option).</P>
<P><B>Using MPlayer to play DVDs:</B></P>
<TABLE BORDER=0 WIDTH="100%">
<TR><TD VALIGN=top><CODE>-dvd &lt;title_id&gt;&nbsp;</CODE></TD>
<TD>Enables DVD support and selects title.</TD><TR>
<TD VALIGN=top><CODE>-chapter &lt;chapter_id&gt;&nbsp;</CODE></TD>
<TD>Selects DVD chapter(s) to play (default: 1).
Example: <CODE>-chapter 5-10</CODE> or <CODE>-chapter -9</CODE></TD></TR>
<TR><TD VALIGN=top><CODE>-dvdangle &lt;angle_id&gt;&nbsp;</CODE></TD>
<TD>Selects camera angle (default: 1)</TD><TR>
<TD VALIGN=top><CODE>-alang &lt;country code&gt;&nbsp;</CODE></TD>
<TD>
The <CODE>country code</CODE> tells <B>MPlayer</B> which audio language(s) to prefer.
For a list of available languages, add the <CODE>-v</CODE> option after
your DVD options and browse the output.<BR>
For example:<BR>
&nbsp;&nbsp;<CODE>-alang hu,en</CODE> - Tries to find Hungarian audio,
falling back to English audio.</TD></TR>
<TR><TD VALIGN=top><CODE>-slang &lt;country code&gt;&nbsp;</CODE></TD>
<TD>
Turns on DVD subtitles. The <CODE>country code</CODE> tells <B>MPlayer</B>
which language(s) to prefer.
For the list of available languages, add the <CODE>-v</CODE> option after
your DVD options and browse the output.<BR>
For example:<BR>
&nbsp;&nbsp;<CODE>-slang hu,en</CODE> - Tries to display Hungarian subtitles,
falling back to English subtitles.</TD></TR>
<TR><TD VALIGN=top><CODE>-sid &lt;subtitle_id&gt;&nbsp;</CODE></TD>
<TD>
Displays a subtitle channel with the given <CODE>id</CODE> (values can be
0-31). Useful with badly mastered DVDs where the country code
selects the wrong channel.</TD></TR>
<TR><TD VALIGN=top><CODE>-csslib &lt;path/filename&gt;</CODE></TD>
<TD>
(old-style DVD option) This option is used to override the default location
of <CODE>libcss.so</CODE>.
</TD></TR>
<TR><TD VALIGN=top><CODE>-dvdauth &lt;DVD device&gt;&nbsp;</CODE></TD>
<TD>
(old-style DVD option) Turns on DVD authentication using the given device.
</TD></TR>
<TR><TD VALIGN=top><CODE>-dvdkey &lt;CSS key&gt;</CODE></TD>
<TD>
(old-style DVD option) When decoding from non-DVD, this option gives the
CSS key needed to crack the DVD (the key is printed when authenticating
with DVD).
</TD></TR>
</TABLE>
<P>The default device is <CODE>/dev/dvd</CODE>, you can change it in
<CODE>config.h</CODE> (compile time option), or you can specify it using the
<CODE>-dvd-device</CODE> option:</P>
<P>&nbsp;&nbsp;&nbsp;&nbsp;<CODE>mplayer -dvd 1 -dvd-device /dev/dvd</CODE></P>
<P>&nbsp;&nbsp;&nbsp;&nbsp;<CODE>mplayer -dvd 1 -slang en -dvd-device /dev/dvd</CODE></P>
<P>&nbsp;&nbsp;&nbsp;&nbsp;<CODE>mplayer -dvd 1 -slang en -dvd-device /dev/dvd -chapter 20-25</CODE></P>
<P>&nbsp;&nbsp;&nbsp;&nbsp;<CODE>mplayer -dvd 2 -alang sp -chapter 5 -dvdangle 2</CODE></P>
<P>&nbsp;&nbsp;&nbsp;&nbsp;<CODE>mplayer -dvdauth /dev/dvd /mnt/cd/video_ts/vts_03_1.vob</CODE></P>
<P>&nbsp;&nbsp;&nbsp;&nbsp;<CODE>mplayer -dvdkey C005D4A16D vts_03_1.vob</CODE></P>
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