mirror of https://github.com/mpv-player/mpv
109 lines
4.1 KiB
HTML
109 lines
4.1 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML>
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<HEAD>
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<TITLE>CD, DVD, VCD - MPlayer - The Movie Player for Linux</TITLE>
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<LINK REL="stylesheet" TYPE="text/css" HREF="default.css">
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<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
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</HEAD>
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<BODY>
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<H2><A NAME="drives">4.1 CD/DVD drives</A></H2>
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<P>Linux documentation excerpt:</P>
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<P>Modern CD-ROM drives can attain very high head speeds, yet some CD-ROM drives
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are capable of running at reduced speeds. There are several reasons that might
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make you consider changing the speed of a CD-ROM drive:</P>
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<UL>
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<LI>There have been reports of read errors at these high speeds, especially
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with badly pressed CD-ROMs. Reducing the speed can prevent data loss under
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these circumstances.</LI>
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<LI>Many CD-ROM drives are annoyingly loud, a lower speed may reduce the
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noise.</LI>
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</UL>
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<P>You can reduce the drive speed with hdparm or a program called setcd.
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It works like this:</P>
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<P> <CODE>hdparm -E [speed] [cdrom device]</CODE></P>
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<P> <CODE>setcd -x [speed] [cdrom device]</CODE></P>
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<P>You can also try</P>
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<P> <CODE>echo current_speed:4 > /proc/ide/[cdrom device]/settings</CODE></P>
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<P>but you will need root privileges. The following command may also help:</P>
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<P> <CODE>echo file_readahead:2000000 > /proc/ide/[cdrom device]/settings</CODE></P>
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<P>This sets prefetched file reading to 2MB, which helps with scratched CD-ROMs.
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It is recommended that you also tune your CD-ROM drive with hdparm:</P>
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<P> <CODE>hdparm -d1 -a8 -u1 (cdrom device)</CODE></P>
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<P>This enables DMA access, read-ahead, and IRQ unmasking (read the hdparm man
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page for a detailed explanation).</P>
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<P>Please refer to "<CODE>/proc/ide/[cdrom device]/settings</CODE>" for
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fine-tuning your CD-ROM.</P>
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<H2><A NAME="dvd">4.2 DVD playback</A></H2>
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<P><B>MPlayer</B> uses <CODE>libdvdread</CODE> and <CODE>libdvdcss</CODE> for
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DVD decryption and playback. These two libraries are contained in the
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<CODE>libmpdvdkit/</CODE> subdirectory of the <B>MPlayer</B> source tree, you
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do not have to install them separately. We opted for this solution because
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we had to fix a libdvdread bug, and apply a patch which adds
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<B>cracked CSS keys caching support</B> to libdvdcss. This results in a large
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speed increase because the keys do not have to be cracked every time before
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playing. The cracked keys are stored in the
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<CODE>~/.mplayer/DVDKeys</CODE> directory.</P>
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<P><B>MPlayer</B> can also use system-wide <CODE>libdvdread</CODE> and
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<CODE>libdvdcss</CODE> libraries, but this solution is <B>not</B> recommended,
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as it can result in bugs, library incompatibilities, and slower speed.</P>
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<P>Support for DVD navigation via <CODE>dvdnav</CODE> is being worked on, but
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not finished yet.</P>
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<H4>Old-style DVD support - OPTIONAL</H4>
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<P>Useful if you want to play encoded VOBs from hard disk. Compile and
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install <B>libcss</B> 0.0.1 (not newer) for this (If <B>MPlayer</B> fails to
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detect it, use the <CODE>-csslib /path/to/libcss.so</CODE> option).</P>
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<P>For the complete list of available options, please read the man page.</P>
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<H2><A NAME="vcd">4.3 VCD playback</A></H2>
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<P>Playing standard Video CDs:</P>
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<P><CODE>mplayer -vcd <track> [-cdrom-device device]</CODE></P>
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<P>Examples:<BR>
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<CODE>mplayer -vcd 1<BR>
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mplayer -fs -vcd 2 -cdrom-device /dev/hdc</CODE></P>
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Notes:
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<UL>
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<LI>Do <B>not</B> mount VCDs to play the DAT files directly! It may work
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under Windows but will not under Linux. You have to play VCDs with the
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<CODE>-vcd</CODE> option.</LI>
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<LI>VCD disks usually have 2 tracks: a data track (containing autostart
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Windows playback program, karaoke data etc) and a mode-2 track (the movie).
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So try <CODE>-vcd 2</CODE> first.</LI>
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<LI>The default VCD device is <CODE>/dev/cdrom</CODE>. If your setup differs,
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make a symlink, or specify the correct device on the command line with the
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<CODE>-cdrom-device</CODE> option.</LI>
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</UL>
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</BODY>
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</HTML>
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