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Diffstat (limited to 'DOCS/DVD')
| -rw-r--r-- | DOCS/DVD | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/DOCS/DVD b/DOCS/DVD deleted file mode 100644 index cd78b39f9f..0000000000 --- a/DOCS/DVD +++ /dev/null @@ -1,139 +0,0 @@ -DVD support in MPlayer! -~~~~~~~~~~~~~~~~~~~~~~~ - -Read file 'DVD-FAQ' as well (and try to avoid recursion by the redirector -message there :). - -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! - -Building MPlayer with libcss support -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -First, you must compile and install libcss on your system. -Second, you have to recompile MPlayer with libcss support. There is -autodetection of libcss, but if it fails, see below : - -Call ./configure script of MPlayer 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. - -Viewing VOB files directly from DVD -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -mplayer -dvdauth /dev/dvd /mnt/cdrom/video_ts/vts_01_1.vob - -where, - - '-dvdauth /dev/dvd' tells MPlayer 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 MPlayer as root! (see section 'Problems'). - -NOTE about the sound: - It seems that MPlayer 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'. - - -New source files -~~~~~~~~~~~~~~~~ -dvdauth.c - Issues DVD disc and title authentication and fills key_disc and - key_title arraies. - -dvdauth.h - header file - -These files are embedded inside an '#ifdef ... #endif' block, so if libcss -support was not requested, they do not produce any code and of course -libcss is not linked against MPlayer either. - - -Modifications in the source -~~~~~~~~~~~~~~~~~~~~~~~~~~~ -* (stream.c) STREAM_BUFFER_SIZE is set to 2048 -* (demux_mpg.c) the old message of 'encrypted VOB file is not supported' - was changed to set a flag to 1. After parsing the header, if this - flag is set, we call descramble function of libcss for decrypt. -* (stream.c) on several points where the old 4096 length STREAM_BUFFER_SIZE was - hardcoded into the source, it was replaced with 'STREAM_BUFFER_SIZE' -* (mplayer.c) calling dvd disc and title authentication and seek to sector - boundaries on seeking for mpegs - - -Performance -~~~~~~~~~~~ -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 MPlayer. - 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'. |