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| author | gabucino <gabucino@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2001-08-21 21:01:54 +0000 |
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| committer | gabucino <gabucino@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2001-08-21 21:01:54 +0000 |
| commit | c10396e50ff2aafa4bcc480f8391927425f3bb2d (patch) | |
| tree | 0498a88de8e547e6b17b13c4b1c5305b54fdc451 /DOCS/faq.html | |
| parent | 1af8d58c0bf4a4cbac5fa9e5cfb8bc382c047b8c (diff) | |
| download | mpv-c10396e50ff2aafa4bcc480f8391927425f3bb2d.tar.bz2 mpv-c10396e50ff2aafa4bcc480f8391927425f3bb2d.tar.xz | |
new, splitted, etc dox
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@1613 b3059339-0415-0410-9bf9-f77b7e298cf2
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diff --git a/DOCS/faq.html b/DOCS/faq.html new file mode 100644 index 0000000000..75fb4aca97 --- /dev/null +++ b/DOCS/faq.html @@ -0,0 +1,322 @@ +<HTML> + +<BODY> + +<PRE> + + <A NAME=5>5. FAQ section + + + <A NAME=5.1>5.1. Compilation + + <B>Q: What's the problem with gcc 2.96 ? + </B>A: gcc 2.96 is RedHat's UNOFFICIAL (it can be found only on RedHat sites, or + RedHat distributions) and BUGGY gcc release. gcc 2.96 is TOTALLY + unsupported by <B>MPlayer</B>, because it simply SKIPS MMX codes, it just does + not compile it. Important: this is NOT an <B>MPlayer</B>-specific problem, + numerous other projects (DRI, avifile, etc..) have problems with this shit + too. + ** DO NOT USE gcc 2.96 !!! ** + + <B>Q: Great, I have gcc 3.0.1 from RedHat/Mandrake, then I'm fine--! + </B>A: No :) Their gcc 3.0.1 was compiled with gcc 2.96, so they are + buggy shit too. + + <B>Q: Now then. What should I use? + </B>A: Any of gcc 2.95 series. + + <B>Q: SDL output doesn't work or compile. Problem is .... + </B>A: It is tested with newest SDL (probably runs on 1.1.7+). + It does NOT work with 1.1.6, 1.1.5 1.1.4 1.1.3 1.0.4 etc, don't ask. + + <B>Q: I am still having trouble compiling with SDL support. gcc says something + about "undefined reference to `SDL_EnableKeyRepeat'" What's now? + </B>A: Where did you install the SDL library? If you installed in /usr/local + (the default) then edit the top level config.mak and add + "-L/usr/local/lib " after "X_LIBS=" Now type make. You're done! + + <B>Q: It doesn't compile, and it misses uint64_t inttypes.h and similar things... + </B>A: copy DOCS/inttypes.h to <B>MPlayer</B> directory (cp DOCS/inttypes.h .) + try again... if fail, contact us + + <B>Q: I have Pentium III but ./configure doesn't detect SSE + </B>A: Only kernel versions 2.4.x supports SSE (or try latest 2.2.19 or newer, but + be prepared for problems) + + <B>Q: I have G200/G400, how to compile/use mga_vid driver? + </B>A: Read all this documentation. + + <B>Q: Are there rpm/deb/... packages of <B>MPlayer</B>? + </B>A: You can make a .deb package for yourself, check section <A HREF="documentation.html#6.1">6.1</A> . + It's _STRONGLY_ discouraged to use precompiled packages + of <B>MPlayer</B>, since it (currently) _highly_ depends on compile-time + options and optimizations! + Precompiled packages are COMPLETELY unsupported by the <B>MPlayer</B> team! + + <B>Q: During 'make', <B>MPlayer</B> complains about X11 libraries. I don't understand, + I DO have X installed!? + </B>A: ...but you don't have the X development package installed. Or not + correctly. It's called XFree86-devel* under RedHat, and xlib6g-dev* under + Debian. Also check if the /usr/X11 symlink exists (this can be a problem on + Mandrake systems). It can be created with the + $ ln -sf /usr/X11R6 /usr/X11 + command. Also check the /usr/include/X11 link : + $ ln -sf /usr/X11R6/include/X11 /usr/include/X11 + Your distribution may differ from the Linux Filesystem Standard. + + <B>Q: What about DGA driver? I can't find it!!! + </B>A: ./configure autodetects your DGA driver. If -vo help doesn't show + DGA, then there's a problem with your X installation. + Try ./configure --enable-dga (and read VIDEOCARDS) + Alternatively, try SDL's DGA driver with '-vo sdl:dga' options. + + <B>Q: I can't compile SVGAlib.. I'm using 2.3/2.4 kernel. + </B>A: You have to edit SVGAlib's Makefile.cfg and comment "BACKGROUND = y" out. + + <B>Q: I compiled <B>MPlayer</B> with libcss/libdivxdecore support, but when + I try to start it, it says : + > error while loading shared libraries: libcss.so.0: cannot load + > shared object file: No such file or directory + I checked up on the file and it IS there in /usr/local/lib. + </B>A: What are you doing on Linux? Can't you install a library? Why do + we get these questions? It's not <B>MPlayer</B> specific at all! Add + /usr/local/lib to <B>/etc/ld.so.conf</B> and run <B>ldconfig</B> . + Or install it to /usr/lib , because if you can't solve the /usr/local + problem, you are careless enough to do such things. + + <B>Q: I have gcc 3.0 . I have to compile mplayer with --disable-dshow, + else it prints + + /usr/local/objdir/gcc-3.0/lib//libstdc++.so.3: undefined symbol: __dso_handle + + </B>A: All you have to do is create a symbolic link from libstdc++.so to + libstdc++.so.3 + + + <A NAME=5.2>5.2. General questions + + <B>Q: What about DVD playback? + </B>A: Read files 'DVD' and 'DVD-FAQ'. + + <B>Q: -xy option doesn't work with x11 driver (-vo x11) + </B>A: x11 driver doesn't support scaling, but XF86VidMode support is now + used: you must specify the -vm and the -fs switch, and you're done. + Make sure you have the right Modelines in your XF86Config file, and + try if the DGA driver (and SDL's DGA driver, see VIDEOCARDS) works for you. + It's much faster. If SDL's DGA works too, use that, it'll be EVEN + faster! + + <B>Q: what is the meaning of numbers in the status line? + </B>A: see: + </B>A: 2.1 V: 2.2 A-V: -0.167 ct: 0.042 57 41% 0% 2.6% 0 + - </B>A: audio position in seconds + - V: video position in seconds + - A-V: audio-video difference in seconds (delay) + - ct: total A-V sync correction done + - frames played (counting from last seek) + - video codec cpu usage in percent (for mpeg it includes video_out too!) + - video_out cpu usage for avi, 0 for mpg (see above) + - audio codec cpu usage in percent + - frames needed to drop to maintain A-V sync + Most of them are for debug purposes, and will be removed soon. + + <B>Q: Why is video_out cpu usage zero (0%) for mpeg files? + </B>A: It's not zero, but it's built in into codec, so can't be measured separated. + You should try to play the file using -vo null and then -vo ... and check + the difference to see video_out speed... + + <B>Q: What's XMMP? (is it XMMS or XMPS but mispelled?) + </B>A: It's a new project, see http://frozenproductions.com for details + + <B>Q: There are error messages about file not found /usr/lib/win32/.... + </B>A: Download & install w32codec.zip from *our* FTP + (avifile's codec package has different DLL set) + + <B>Q: Are there any mailing lists on <B>MPlayer</B>? + </B>A: Yes! See README on how to subscribe them! + + <B>Q: I've found a nasty bug when I tried to play my favourite video!! + Who should I inform? + </B>A: See Appendix <A HREF="bugreports.html">C</A> . + + <B>Q: I have problems playing files with ... codec. Can I use'em? + </B>A: Check http://mplayer.sourceforge.net/DOCS/codecs.html, + if it doesn't contain your codec, read + http://mplayer.sourceforge.net/DOCS/CODECS, and contact us. + + <B>Q: Umm, what is "IdegCounter" ? + </B>A: A mixture of a hungarian and an english word. In english, "Ideg" means + "nerve", and is pronounced as something like "ydaegh" . It was first used + to measure the nervousness of A'rpi, after some (umm) "mystic" disappearance + of CVS code ;) + + <B>Q: LIRC doesn't work, because ... + </B>A: Are you sure you use "mplayer_lirc" instead of "mplayer" ? + + <B>Q: Subtitles are very nice, the most beautiful I've ever seen, but they slow + down the playing! I know it's unlikely... + </B>A: After running ./configure , edit config.h and replace #undef FAST_OSD with + #define FAST_OSD . Then recompile. + + <B>Q: The OSD is flickering! + </B>A: You use a vo driver with single buffering (x11,xv). With xv you can change + the number of buffers in libvo/vo_xv.c : + Increase #define NUM_BUFFERS 1 + + <B>Q: What exactly is this libavcodec? + </B>A: It's from Gerard Lantau's ffmpeg package (http://ffmpeg.sourceforge.net). + It has C language DivX ;-) and OpenDivX codec. Some benchmarks + showed that its DivX seems to be even faster than DirectShow codec without + preprocessing, and only a few percent slower than ProjectMayo's OpenDivX + decoder. It uses YV12 pixel format, so old Voodoo users can use it for YUV. + Also, open the possibility to play DivX on virtually every computer that + has a C compiler. Kinda great stuff, isn't it? + + <B>Q: But configure tells me "Checking for libavcodec ... no"! + </B>A: You need to get libavcodec from FFmpeg's CVS. Read the instructions in + the <A HREF="codecs.html#2.1.2.2">ffmpeg section</A> . + + + <A NAME=5.3>5.3. File playing problems + + <B>Q: ...... works with avifile/aviplay while doesn't with <B>MPlayer</B> + </B>A: <B>MPlayer</B> != avifile + The only common thing between these players is the Win32 DLL loader. + The codecs (dll) sets, syncronization, demultiplexing etc is totaly + different and shouldn't be compared. + If something works with aviplay it doesn't mean that <B>MPlayer</B> should do + it and vice versa. + + <B>Q: audio goes out of sync playing .avi file + </B>A: try with -bps or -nobps option + if still bad, send me (upload to ftp) that file, I'll check. + + <B>Q: Indeo 3.x/4.x movies are viewed upside-down!!!? + </B>A: It's a known bug (really it's a bug/limitation of the DLL codec) + Try if your vo driver supports the -flip switch. + + <B>Q: Indeo 3.x,4.x video doesn't work at 32bpp resolutions (16,24 bpp are ok) + </B>A: It's a known bug (really it's a bug/limitation of the DLL codec) + + <B>Q: I've got '<B>MPlayer</B> interrupted by signal 11' in module audio_setup or + decode_audio. + </B>A: This is highly unlikely, since the mp3lib rewrite. Contact us, it may be + a bug. Possibly it's a damaged file, try with -afm 4 . + + <B>Q: <B>MPlayer</B> exits with something error when using l3codeca.acm + </B>A: Check 'ldd /usr/local/bin/mplayer' output. If it contains + libc.so.6 => /lib/libc.so.6 (0x4???????) + where "?" is any number then it's ok, the error is not here. If it is: + libc.so.6 => /lib/libc.so.6 (0x00??????) + then there is problem with your kernel/libc. Maybe you are using some + security patches (for example Solar Designer's OpenWall patch) which + forces loading libraries to very low addresses. + Because l3codeca.acm is a non-relocatable DLL, it must be loaded to + 0x00400000, we can't change this. You should use non-patched kernel, + or use <B>MPlayer</B>'s -afm 1 option to disable using l3codeca.acm. + + <B>Q: My computer plays M$ DivX AVIs with resolutions ~ 640x300 and stereo mp3 + sound too slow. When I use -nosound switch, everything is ok (but quiet). + </B>A: Those files probably have 48Khz audio, and your soundcard/driver can't play + it correctly. Audio downsampling isn't implemented in <B>MPlayer</B> (yet). + + <B>Q: <B>MPlayer</B> dies with "<B>MPlayer</B> interrupted by signal 4 in module: decode_video". + </B>A: Try running <B>MPlayer</B> on the machine you compiled on. Or recompile. Don't + use <B>MPlayer</B> on different CPU than it was compiled on. + + <B>Q: I have problems with [your window manager] and fullscreen xv/xmga/sdl/x11 + modes.. + </B>A1: Use the -fsmode switch. See example.conf or manpage. + + <B>Q: But it works with avifile ! + </B>A: So what? + + <B>Q: Then avifile is better ! + </B>A: Then use avifile, it has nice GUI and nice C++ code :) + + <B>Q: I got this playing mpeg files: Can't find codec for video format 0x10000001 ! + </B>A: You have old version of codecs.conf at ~/.mplayer/. Upgrade it from DOCS/ + + <B>Q: After starting mplayer under KDE(1/2) I just get a black screen and nothing + happens, after about one minute the video starts playing. + </B>A: The KDE arts sound daemon is blocking the sound device, either wait the time + until video starts or you disable the arts-daemon in kontrollcenter. + If you want to use arts sound, specify audio output via SDL (ao=sdl), and + make sure your SDL can handle arts sound. Yet another option is to start + mplayer with artsdsp. + + <B>Q: I have an AVI that plays with grey screen with -vc odivx, and green + with -vc divx4 . + </B>A: It's not a DivX file, but an M$ MPEG4v3 . Update your codecs.conf. + + + <A NAME=5.4>5.4. Video/audio driver problems (vo/ao) + + <B>Q: Ok, -vo help shows DGA driver, but it is babbling about permissions! + Help me! + </B>A: It works only if running as root! It's a DGA limitation. + You should become to root (su -), and try again. + + Another solution is making mplayer SUID root, but its NOT RECOMMENDED! + + chown root /usr/local/bin/mplayer + chmod 750 /usr/local/bin/mplayer + chmod +s /usr/local/bin/mplayer + + !!!! BUT STAY TUNED !!!! + This is a *BIG* security risk! *NEVER* do this on a server or on a computer + can be accessed by more people than only you because they can gain root + privilegies through suid root mplayer!!! + !!!! SO YOU HAVE BEEN WARNED ... !!!! + + <B>Q: When using Xvideo, my Voodoo 3/Banshee says: + X Error of failed request: BadAccess (attempt to access private resource + denied) + Major opcode of failed request: 147 (MIT-SHM) + Minor opcode of failed request: 1 (X_ShmAttach) + Serial number of failed request: 26 + Current serial number in output stream:27 + </B>A: Your driver is old, update it. Either download (at least) DRI version 0.6 + from http://dri.sourceforge.net , or use the DRI cvs. + + <B>Q: When using Xvideo, I can't play DivX avis with my Voodoo 3/Banshee ! + It says: + ... + Xvideo image format: 0x32315659 (YV12) planar + Xvideo image format: 0x30323449 (I420) planar + ... + </B>A1: See the previous answer. + A2: Since 0.18pre4 we include libavcodec from the ffmpeg package. It contains + a C language DivX and OpenDivX decoder. The DivX decoder uses YV12 format + for output, thus it should work for you. Compile in libavcodec support. + + <B>Q: OpenGL (-vo gl) output doesn't work (hangup/black window/X11 errors/...) + </B>A: your opengl driver doesn't support dynamic texture changes (glTexSubImage) + it's known not to work with nVidia's binary shit. + it's known to work with Utah-GLX/DRI and Matrox G400 card. Also with + DRI and Radeon card. It won't work with DRI others than these. + it will not work with 3DFX cards because the 256x256 texture size limit. + + <B>Q: I have an nVidia TNT/TNT2 card, and I have a band with strange colours, + right under the movie! Whose fault is this? + </B>A: It's the nVidia X driver's. These bugs are ONLY with the TNT/TNT2 cards, + and we can't do anything about it, it's not our bug. + + + <A NAME=5.5>5.5. Feature requests + + <B>Q: Is there a hint on how to watch QuickTime and RealMedia movies in MPlayer? + </B>A: There's no way to do it. Therefore these formats deserve to die in flames. + Theoretically you can reverse engineer Real codecs built for Linux (they + are available as .so files), but in practice that's really difficult, even + if you know how the compiler used by Real is making assembler code. + As for QuickTime, it's possible to play some old movies and this + capability will be added to mplayer soon, but newer clips are all Sorenson + encoded, and that codec is built-in deep in the QT executable, there's + no way to use it. + +</PRE> + +</BODY> + +</HTML> |