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diff --git a/DOCS/xml/en/usage.xml b/DOCS/xml/en/usage.xml index 74104de368..b851dd087d 100644 --- a/DOCS/xml/en/usage.xml +++ b/DOCS/xml/en/usage.xml @@ -430,6 +430,197 @@ This works with all protocols supported by <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - --> +<sect1 id="dvd"> +<title>DVD playback</title> + +<para> +For the complete list of available options, please read the man page. +The syntax to play a standard DVD is as follows: +<screen> +mplayer dvd://<replaceable><track></replaceable> [-dvd-device <replaceable><device></replaceable>] +</screen> +</para> + +<para> +Example: +<screen>mplayer dvd://1 -dvd-device /dev/hdc</screen> +</para> + +<para> +If you have compiled <application>MPlayer</application> with dvdnav support, the +syntax is the same, except that you need to use dvdnav:// instead of dvd://. +</para> + +<para> +The default DVD device is <filename>/dev/dvd</filename>. If your setup +differs, make a symlink or specify the correct device on the command +line with the <option>-dvd-device</option> option. +</para> + +<para> +<application>MPlayer</application> uses <systemitem>libdvdread</systemitem> and +<systemitem>libdvdcss</systemitem> for DVD playback and decryption. These two +libraries are contained in the +<application>MPlayer</application> source tree, you do not have +to install them separately. You can also use system-wide versions of the two +libraries, but this solution is not recommended, as it can result in bugs, +library incompatibilities and slower speed. +</para> + +<note><para> +In case of DVD decoding problems, try disabling supermount, or any other such +facilities. Some RPC-2 drives may also require setting the region code. +</para></note> + +<formalpara> +<title>DVD decryption</title> +<para> +DVD decryption is done by <systemitem>libdvdcss</systemitem>. The method +can be specified through the <envar>DVDCSS_METHOD</envar> environment +variable, see the manual page for details. +</para> +</formalpara> + +<!-- ********** --> + +<sect2 id="region_code"> +<title>region code</title> +<para> +DVD drives nowadays come with a nonsensical restriction labeled +<ulink url="http://en.wikipedia.org/wiki/DVD_region_code">region code</ulink>. +This is a scheme to force DVD drives to only accept DVDs produced for one of +the six different regions into which the world was partitioned. How a group +of people can sit around a table, come up with such an idea and expect the +world of the 21st century to bow to their will is beyond anyone's guess. +</para> + +<para> +Drives that enforce region settings through software only are also known as +RPC-1 drives, those that do it in hardware as RPC-2. RPC-2 drives allow +changing the region code five times before it remains fixed. +Under Linux you can use the +<ulink url="http://linvdr.org/projects/regionset/">regionset</ulink> tool +to set the region code of your DVD drive. +</para> + +<para> +Thankfully, it is possible to convert RPC-2 drives into RPC-1 drives through +a firmware upgrade. Feed the model number of your DVD drive into your favorite +search engine or have a look at the forum and download sections of +<ulink url="http://www.rpc1.org/">"The firmware page"</ulink>. +While the usual caveats for firmware upgrades apply, experience with +getting rid of region code enforcement is generally positive. +</para> +</sect2> +</sect1> + + +<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - --> + + +<sect1 id="vcd"> +<title>VCD playback</title> + +<para> +For the complete list of available options, please read the man page. The +Syntax for a standard Video CD (VCD) is as follows: +<screen>mplayer vcd://<replaceable><track></replaceable> [-cdrom-device <replaceable><device></replaceable>]</screen> +Example: +<screen>mplayer vcd://2 -cdrom-device /dev/hdc</screen> +The default VCD device is <filename>/dev/cdrom</filename>. If your setup +differs, make a symlink or specify the correct device on the command line +with the <option>-cdrom-device</option> option. +</para> + +<note><para> +At least Plextor and some Toshiba SCSI CD-ROM drives have horrible performance +reading VCDs. This is because the CDROMREADRAW <systemitem>ioctl</systemitem> +is not fully implemented for these drives. If you have some knowledge of SCSI +programming, please <ulink url="../../tech/patches.txt">help us</ulink> +implement generic SCSI support for VCDs. +</para></note> + +<para> +In the meantime you can extract data from VCDs with +<ulink url="http://ftp.ntut.edu.tw/ftp/OS/Linux/packages/X/viewers/readvcd/">readvcd</ulink> +and play the resulting file with <application>MPlayer</application>. +</para> + +<formalpara> +<title>VCD structure</title> +<para> +A Video CD (VCD) is made up of CD-ROM XA sectors, i.e. CD-ROM mode 2 +form 1 and 2 tracks: +<itemizedlist> +<listitem><para> + The first track is in mode 2 form 2 format which means it uses L2 + error correction. The track contains an ISO-9660 file system with 2048 + bytes/sector. This file system contains VCD metadata information, as + well as still frames often used in menus. MPEG segments for menus can + also be stored in this first track, but the MPEGs have to be broken up + into a series of 150-sector chunks. The ISO-9660 file system may + contain other files or programs that are not essential for VCD + operation. +</para></listitem> + +<listitem><para> + The second and remaining tracks are generally raw 2324 bytes/sector + MPEG (movie) tracks, containing one MPEG PS data packet per + sector. These are in mode 2 form 1 format, so they store more data per + sector at the loss of some error correction. It is also legal to have + CD-DA tracks in a VCD after the first track as well. + On some operating systems there is some trickery that goes on to make + these non-ISO-9660 tracks appear in a file system. On other operating + systems like GNU/Linux this is not the case (yet). Here the MPEG data + <emphasis role="bold">cannot be mounted</emphasis>. As most movies are + inside this kind of track, you should try <option>vcd://2</option> + first. +</para></listitem> + +<listitem><para> + There exist VCD disks without the first track (single track and no file system + at all). They are still playable, but cannot be mounted. +</para></listitem> + +<listitem><para> + The definition of the Video CD standard is called the + Philips "White Book" and it is not generally available online as it + must be purchased from Philips. More detailed information about Video + CDs can be found in the + <ulink url="http://www.vcdimager.org/pub/vcdimager/manuals/0.7/vcdimager.html#SEC4">vcdimager documentation</ulink>. +</para></listitem> +</itemizedlist> +</para> +</formalpara> + +<formalpara> +<title>About .DAT files</title> +<para> +The ~600 MB file visible on the first track of the mounted VCD is not a real +file! It is a so called ISO gateway, created to allow Windows to handle such +tracks (Windows does not allow raw device access to applications at all). +Under Linux you cannot copy or play such files (they contain garbage). Under +Windows it is possible as its iso9660 driver emulates the raw reading of +tracks in this file. To play a .DAT file you need the kernel driver which can +be found in the Linux version of PowerDVD. It has a modified iso9660 file system +(<filename>vcdfs/isofs-2.4.X.o</filename>) driver, which is able to emulate the +raw tracks through this shadow .DAT file. If you mount the disc using their +driver, you can copy and even play .DAT files with +<application>MPlayer</application>. But it will not +work with the standard iso9660 driver of the Linux kernel! Use +<option>vcd://</option> instead. Alternatives for VCD copying are the +new <ulink url="http://www.elis.rug.ac.be/~ronsse/cdfs/">cdfs</ulink> kernel +driver (not part of the official kernel) that shows CD sessions as image files +and <ulink url="http://cdrdao.sf.net/">cdrdao</ulink>, a bit-by-bit +CD grabbing/copying application. +</para> +</formalpara> +</sect1> + + +<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - --> + + <sect1 id="edl" xreflabel="Edit Decision Lists (EDL)"> <title>Edit Decision Lists (EDL)</title> |