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| author |  gabucino <gabucino@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2001-08-24 18:48:13 +0000 |
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| committer | gabucino <gabucino@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2001-08-24 18:48:13 +0000 |
| commit | 8fae9da08683f88f7ad1ec2649830b6d0b2da483 (patch) | |
| tree | 58e06ab8fa7cc62f246d4fd5c6e10a06215880ef /DOCS/cd-dvd.html | |
| parent | 5a363c0e8498572594026612099227c3a1b68479 (diff) | |
*** empty log message ***
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@1683 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'DOCS/cd-dvd.html')
| -rw-r--r-- | DOCS/cd-dvd.html | 391 |
1 files changed, 190 insertions, 201 deletions
diff --git a/DOCS/cd-dvd.html b/DOCS/cd-dvd.html index 1348ed9a68..01a16f051f 100644 --- a/DOCS/cd-dvd.html +++ b/DOCS/cd-dvd.html @@ -1,207 +1,196 @@ <HTML> - <BODY> -<PRE> - - <A NAME=4.1>4.1. CD-ROM drives</A> - - From Linux documentation: - - Some CDROM drives are capable of changing their head-speed. There are several - reasons for changing the speed of a CDROM drive. Badly pressed CDROMs may - benefit from less-than-maximum head rate. Modern CDROM drives can obtain very - high head rates (up to 24-times is common). It has been reported that these - drives can make reading errors at these high speeds, reducing the speed can - prevent data loss in these circumstances. Finally, some of these drives can - make an annoyingly loud noise, which a lower speed may reduce. - - The recommended way to do it is with a program called 'setcd' . It's kinda - old, but won't be too hard to find on the Net. (UPDATE : new hdparm - has an option for this !) - Use it with : - - - setcd -x [speed] [cdrom device] - - - Also you can try : - - - echo current_speed:4 >/proc/ide/[cdrom device]/settings - - - but you'll need root privileges. I use following command too : - - - echo file_readahead:2000000 >/proc/ide/[cdrom device]/settings - - - for 2MB prefetched reading from the file (it's useful for scratched CDROMs). - It's recommended that you tuneup your CDROM drive also with hdparm : - - - hdparm -d1 -a8 -u1 (cdrom device) - - - to enable using DMA access, readahead, and IRQ unmasking. - (if you don't understand these, *read the hdparm manpage*) - - Please refer to "/proc/ide/[cdrom device]/settings" for fine-tuning your - CDROM. - - - - <A NAME=4.2>4.2. DVD playback</A> - - IMPORTANT NOTE: please _DO_NOT_ require further features for DVD playback. This - is extremly experimental hack. Maybe it won't work for you. If you're - capable of helping us do it now! First we would like to fix existing problems. - Then we can start implementing advanced DVD playback functions of course. - - This means current DVD functions are mainly for developers and not for users! - - First, you must compile and install libcss on your system. - Second, you have to recompile <B>MPlayer</B> with libcss support. There is - autodetection of libcss, but if it fails, see below : - - Call ./configure script of <B>MPlayer</B> with these options: - - ./configure --enable-css --with-csslibdir=/usr/local/lib --with-cssincdir=/usr/local/include - - (of course you can append your favourite options as well) - - --with-csslibdir=/usr/local/lib - Directory contains libcss.so shared library. This directory should - be in your /etc/ld.so.conf as well. - - --with-cssincdir=/usr/local/include - Directory contains header file 'css.h' of libcss. - - mplayer -dvdauth /dev/dvd /mnt/cdrom/video_ts/vts_01_1.vob - - where, - - '-dvdauth /dev/dvd' tells <B>MPlayer</B> the device name of your DVD drive. - it's used in disc authentication process - - the filename is simply a VOB file path on the disc - - Note that according to my experiences, disc authentication requires root - privileges so you must run <B>MPlayer</B> as root! (see section 'Problems'). - - NOTE about the sound: - It seems that <B>MPlayer</B> sometimes fails to find the first audio stream. - You can specify it with the '-aid 128' option, for example. - Please experience with 128,129 and similar values. See section - 'Problems'. - - On my AMD K6-2 with using hw scaling and colorspace conversion - capability of my G400 it's possible to watch DVD with about 70% - CPU usage with '-nosound'. Unfortunately with sound my machine is - not enough :( Maybe it can be improved somewhat ... - Guess, it's not so bad ... According to reports from my friends - xine uses 80-90% CPU to play DVD on much more powerful machines - like 1GHz Athlon systems (as far as I know, it's said that about - 300MHz celeron is the minimum to watch DVDs ... using windows - DVD viewers). - - Hint: I commented out downmix functions from libac3 (of course in this way I - can't get sound) and audio decoding CPU usage became 11% instead of 24 on - my machine. This clearly indicates that we should optimize downmix functions - (KNI code is no use for my k6-2). - - HOT NEWZ: - We have got 3Dnow optimized libac3. Wow ;-) - - - Problems (TODO) - - * disc authentication (the FIBMAP ioctl) requires root privilegies. - this is strange since OMS can do it as user too. - * sound. I'm using my only DVD disc (The Matrix) to test <B>MPlayer</B>. - some VOB file have English sound, some have Spanish and some have - no sound at all. - IT SEEMS that if I give '-aid 128' everything works with English sound ... - * strange effects but only with SOME vob files (it looks like some interlacing - effect, eg: every 2nd line on the screen is from the last frame). - - - Feature TODO - - * chapter scanner - * audio stream scanner and allow to select one on runtime as well - (in stage#1 it would be enough to select one on the startup, see - 'Problems' above) - * DVD menu - I found (at least on disc 'The Matrix') the menu VOB but I don't - know how can it be used. - (after some eyeballing on the source of OMS, it seems we would have to - parse *.ifo files) - * subtitle support - * OSD/GUI (?) support for select chapter, subtitle and audio stream - * getting some documentation on DVD format, eg: which is the 'root' VOB - file on the disc in video_ts directory, which is the menu and so on. - * improve performance (see 'Performance' above) - - - No sound problem (from Matrix DVD, the menu VOB) - - End of packet while searching for PCM header - - DEMUXER: Too many (2048 in 4131540 bytes) video packets in the buffer! - (maybe you play a non-interleaved stream/file or video codec failed) - MPEG: No Audio stream found... ->nosound - - However this does not occur if you specify '-aid 128'. - - - <A NAME=4.3>4.3. DVD playback FAQ</A> - - <B>Q: I have some problem not mentioned here ... - </B>A: Read file 'DVD' as well. - - <B>Q: How can I actually watch DVD with MPlayer? - </B>A: Ehh. Go on reading this file as well as 'DVD' (hint: you must have libcss) - - <B>Q: So MPlayer can play DVDs? Then it must use DeCSS! You are under arrest - under the XYZ#$ paragraph of the-- - </B>A: Get back asshole, there is no DeCSS code in MPlayer. It links to libcss. - - <B>Q: Seems to work but no sound. - </B>A: Use '-aid 128' (or try: 128,129,...) command line switch - - <B>Q: I have got Spanish audio instead of English (or similar problems) - </B>A: See the last question/answer. - - <B>Q: MPlayer complains about FIBMAP or something. - </B>A: Try to run MPlayer as root. - - <B>Q: some strange effect (interlace like thing) especially when fast moving - objects are shown in the movie - </B>A: known problem, we try to fix it later - - <B>Q: DVD support in MPlayer is a piece of shit! - </B>A: You're probably right :) However please contact us if you can improve it! - - <B>Q: Where can I get libcss package from? - </B>A: Maybe from the source of OMS (www.linuxvideo.org). - - <B>Q: How can I ... (insert some expectable DVD player feature here) - </B>A: The current implementation is only for viewing VOB files from DVD. - Nothing more, like subtitles, menus and so on. - - <B>Q: How can I set the region code of my DVD-Drive ? I don't have windows! - </B>A: Use the 'regionset' tool : - http://www.linuxtv.org/download/dvd/dvd_disc_20000215.tar.gz - - <B>Q: MPlayer complains about some renamed option? - </B>A: For future development, old '-dvd' option was replaced by '-dvdauth'. - Option '-dvd' *WILL* do the 'full disk movie' mplaying mode. - But until that, '-dvd' does nothing only prints error message. - -</PRE> +<P><B><A NAME=4.1>4.1. CD-ROM drives</A></B></P> + +<P>From Linux documentation:</P> + +<P>Some CDROM drives are capable of changing their head-speed. There are several +reasons for changing the speed of a CDROM drive. Badly pressed CDROMs may +benefit from less-than-maximum head rate. Modern CDROM drives can obtain very +high head rates (up to 24-times is common). It has been reported that these +drives can make reading errors at these high speeds, reducing the speed can +prevent data loss in these circumstances. Finally, some of these drives can +make an annoyingly loud noise, which a lower speed may reduce.</P> + +<P>The recommended way to do it is with a program called 'setcd' . It's kinda +old, but won't be too hard to find on the Net. (UPDATE : new hdparm +has an option for this !) +Use it with :</P> + +<P> <CODE>setcd -x [speed] [cdrom device]</CODE></P> + +<P>Also you can try:</P> + +<P> <CODE>echo current_speed:4 >/proc/ide/[cdrom device]/settings</CODE></P> + +<P>but you'll need root privileges. I use following command too:</P> + +<P> <CODE>echo file_readahead:2000000 >/proc/ide/[cdrom device]/settings</CODE></P> + +<P>for 2MB prefetched reading from the file (it's useful for scratched CDROMs). +It's recommended that you tuneup your CDROM drive also with hdparm:</P> + +<P> <CODE>hdparm -d1 -a8 -u1 (cdrom device)</CODE></P> + +<P>to enable using DMA access, readahead, and IRQ unmasking. +(if you don't understand these, *read the hdparm manpage*)</P> + +<P>Please refer to "<CODE>/proc/ide/[cdrom device]/settings</CODE>" for fine-tuning your +CDROM.</P> + +<P><B><A NAME=4.2>4.2. DVD playback</A></B></P> + +<P>Yes, the real DVD support has been arrived. You don't need to play VOB files +manually from disk thinking of the purpose of a file in the video_ts +directory, you don't need worry it it's an encrypted disk or not (in old +<B>MPlayer</B> you had to put '-dvdauth /dev/dvd' into the command line in case +of encrypted discs), and you don't need even mount your disk to be able to +play :)</P> + +<P>IMPORTANT NOTE: please _DO_NOT_ require further features for DVD playback. +This is the first version of some real DVD support inside <B>MPlayer</B> and +we're busy with hunting bugs and implementing basic DVD player features.</P> + +<P><B>MPlayer</B> uses libdvdread which has got built in support for IFO parsing, +reading navi blocks and doing authentication/descrambling. libdvdread +use the good old libcss to the latter tasks. So you will need libcss and +libdvdread downloaded, compiled and installed BEFORE you run ./configure +script of <B>MPlayer</B> which will autodetect libdvdread for you in this way.</P> + +<UL> +<LI><P><B>Download source of libdvdread and libcss.</B></P> + +<P><I>You can download them from +<A HREF="http://www.dtek.chalmers.se/groups/dvd">http://www.dtek.chalmers.se/groups/dvd</A> +(click 'download' in the menu at the left, and you can find libcss and +libdvdread in a table).</I></P></LI> + +<LI><P><B>Compile and install libcss THEN libdvdread.</B></P> + +<P><I>Read documentation of these packages to do this step easily.</I></P></LI> + +<LI><P><B>Recompile MPlayer.</B></P> + +<P><I>Run <CODE>./configure</CODE>. If you install libdvdread correctly, ./configure +says something similar:<BR><CODE>Checking for DVDread support ... yes</CODE><BR> +(Of course you can put your favourite configure options into the command +line when you run ./configure). That's it! Say: <CODE>make</CODE>, then <CODE>make install</CODE>.</I></P></LI> +</UL> + +<P>Of course after installing libcss and libdvdread you don't need recompile +them at each time when you want to recompile <B>MPlayer</B> (from a new CVS version +for example) since the needed packages have already been installed on your +machine.</P> + +<P><B>Using MPlayer to play DVDs:</B></P> + + +<TABLE BORDER=0 WIDTH=100%> +<TD VALIGN=top>-dvd <title_id> </TD> +<TD>Enables DVD support and selects title.</TD><TR> +<TD VALIGN=top>-chapter <chapter_id> </TD> +<TD>Selects DVD chapter (default: play from chapter 1)</TD><TR> +<TD VALIGN=top>-dvdangle <chapter_id> </TD> +<TD>Selects camera angle (default: 1)</TD><TR> +</TABLE> + +<P>Default device is <CODE>/dev/dvd</CODE>, you can change it in config.h +(compile time option), or you can specify it as a filename for <B>MPlayer</B>: +</P> + +<P> <CODE>mplayer -dvd 1 /dev/dvd</CODE></P> +<P> <CODE>mplayer -dvd 2 -chapter 5 -dvdangle 2</CODE></P> + +<P><B><A NAME=4.3>4.3. DVD playback FAQ</A></B></P> + +<TABLE BORDER=0 ALIGN=left WIDTH=100%> + +<TD> </TD><TD VALIGN=top>Q:</TD><TD WIDTH=100%><B> +I have some problem not mentioned here ... +</B></TD><TR><TD></TD><TD VALIGN=top>A:</TD><TD> +Read section <A HREF="#4.2">DVD playback</A> as well. +</TD><TR><TD COLSPAN=3> </TD><TR> + +<TD></TD><TD VALIGN=top>Q:</TD><TD WIDTH=100%><B> +How can I actually watch DVD with MPlayer? +</B></TD><TR><TD></TD><TD VALIGN=top>A:</TD><TD> +See the latter question and answer. +</TD><TR><TD COLSPAN=3> </TD><TR> + +<TD></TD><TD VALIGN=top>Q:</TD><TD WIDTH=100%><B> +Can I compile libdvdread and libcss for example on my sweet Sparc/Solaris? +</B></TD><TR><TD></TD><TD VALIGN=top>A:</TD><TD> +Who knows ... Please test it and send feedback. But it's said that it +should work. Please refer documentation of libdvdread and its homepage +as well. We're not authors of libdvdread. +</TD><TR><TD COLSPAN=3> </TD><TR> + +<TD></TD><TD VALIGN=top>Q:</TD><TD WIDTH=100%><B> +What about subtitles? Can MPlayer decode them? +</B></TD><TR><TD></TD><TD VALIGN=top>A:</TD><TD> +Yes it can (or at least it would be able to) but there is now DVD subtitle +displaying functionality inside <B>MPlayer</B> (DVD subs are stored as images, +not text!). However it's a planned feature (at the time of libvo2). +</TD><TR><TD COLSPAN=3> </TD><TR> + +<TD></TD><TD VALIGN=top>Q:</TD><TD WIDTH=100%><B> +I've got no sound / bad sound (Spanish audio and other ugly things). +</B></TD><TR><TD></TD><TD VALIGN=top>A:</TD><TD> +<B>MPlayer</B> currently does not use all of information of IFO blocks from DVD. +You can adjust the right DVD audio stream with: '-aid 128' command line +option, where 128 is the stream id of requested audio stream. You can +experience with numbers of 128,129,... and so on. Of course this problem +will be solved in the future. +</TD><TR><TD COLSPAN=3> </TD><TR> + +<TD></TD><TD VALIGN=top>Q:</TD><TD WIDTH=100%><B> +There is some strange effect (interlace like thing) especially when fast +moving objects are shown in the movie. +</B></TD><TR><TD></TD><TD VALIGN=top>A:</TD><TD> +Known problem, we try to fix it later (when we switch to libvo2). +</TD><TR><TD COLSPAN=3> </TD><TR> + +<TD></TD><TD VALIGN=top>Q:</TD><TD WIDTH=100%><B> +How can I set the region code of my DVD-Drive ? I don't have windows! +</B></TD><TR><TD></TD><TD VALIGN=top>A:</TD><TD> +Use the 'regionset' tool: +http://www.linuxtv.org/download/dvd/dvd_disc_20000215.tar.gz +</TD><TR><TD COLSPAN=3> </TD><TR> + +<TD></TD><TD VALIGN=top>Q:</TD><TD WIDTH=100%><B> +So MPlayer can play DVDs? Then it must use DeCSS! You are under arrest +under the XYZ#$ paragraph of the-- +</B></TD><TR><TD></TD><TD VALIGN=top>A:</TD><TD> +Get back asshole, there is no DeCSS code in <B>MPlayer</B>. <B>MPlayer</B> uses libdvdread +by linking against it, and libdvdread uses libcss by dynamic loading it. +</TD><TR><TD COLSPAN=3> </TD><TR> + +<TD></TD><TD VALIGN=top>Q:</TD><TD WIDTH=100%><B> +Do I need to be (setuid) root/setuid fibmap_mplayer to be able to play DVD? +</B></TD><TR><TD></TD><TD VALIGN=top>A:</TD><TD> +No, you don't. This is the past :) However of course you must have got +the proper rights to the DVD device driver entry (in /dev). +</TD><TR><TD COLSPAN=3> </TD><TR> + +<TD></TD><TD VALIGN=top>Q:</TD><TD WIDTH=100%><B> +How can I ... (insert some expectable DVD player feature here)? +</B></TD><TR><TD></TD><TD VALIGN=top>A:</TD><TD> +The current implementation is the first implementation of some real DVD +player functionality. First, we would like to target existing bugs and +basic features before implementing new features. +</TD><TR><TD COLSPAN=3> </TD><TR> + +<TD></TD><TD VALIGN=top>Q:</TD><TD WIDTH=100%><B> +Where can I get libdvdread and libcss packages from? +</B></TD><TR><TD></TD><TD VALIGN=top>A:</TD><TD> +From the site of Ogle: +<A HREF="http://www.dtek.chalmers.se/groups/dvd">http://www.dtek.chalmers.se/groups/dvd</A>. +</TD><TR><TD COLSPAN=3> </TD><TR> +</TABLE> + +<BR> +<HR>MPlayer documentation project </BODY> - </HTML> |