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131 lines
4.8 KiB
Plaintext
131 lines
4.8 KiB
Plaintext
Frequentely Asked Questions for VideoLAN Client
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$Id: FAQ,v 1.2 2001/11/12 11:37:30 massiot Exp $
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1. Using VLC
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1.1 How do I read a DVD ?
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-----------------------
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Just launch vlc and use the "open disc" command from the graphical
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interface. In case of trouble, you may want to use the command line
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interface :
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vlc dvd:/dev/dvd
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1.2 How do I read an encrypted DVD ?
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----------------------------------
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It's exactly the same as for a normal DVD. You will need write access to
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/dev/dvd, because of the key negociation process.
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1.3 How do I switch to full screen display ?
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------------------------------------------
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Press 'f' to toggle fullscreen mode. Note that not all video output
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devices support full screen.
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1.4 How do I hide the mouse cursor ?
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----------------------------------
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It should disappear after a few seconds if you stop moving the mouse.
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1.5 How do I use vlc if I don't want to install Gnome and all this
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#@!£% *$@&§% !@# bloat ?
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---------------------------------------------------------------------------
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You can run :
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vlc -I dummy myfile.mpg
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Most commands are available from the command line, see vlc --help for
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more information.
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2. Troubleshooting
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2.1 When I start vlc, I don't have any interface coming...
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-------------------------------------------------------
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If you installed a binary package, make sure you also installed an
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interface package such as vlc-gtk or vlc-qt. If you installed from
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source, make sure the development package for gtk or qt is correctly
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installed (often gtk-dev or gtk-devel) and recompile.
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2.2 Clicking on "disc" in the interface doesn't do anything
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-----------------------------------------------------------
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Wait a few seconds. Key cracking can take much time on some discs. If it
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still doesn't work, you can have a more verbose output using "vlc -vvvvv".
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Here are a few things to check for :
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* Did you install the libdvdcss package ?
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* Do you have write access to your DVD device ? For instance :
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chmod 666 /dev/hdc
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* Does your kernel log contain line about your DVD device ?
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* Do you have a link from /dev/dvd to your real DVD device ? For instance
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ln -s hdc /dev/dvd
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2.3 Running vlc pussycat.mpg doesn't do anything...
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------------------------------------------------
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Probably your MPEG-1 file doesn't have any system layer. This is common
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for MPEG-1 streams without any audio track. Currently VLC doesn't
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automatically detect this format, so you have to manually select it :
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vlc --input es pussycat.mpg
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2.4 The video runs but the picture is distorted...
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-----------------------------------------------
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There is probably a problem with the output layer. There are several
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ways of troubleshooting it. First, try with another output plug-in, for
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instance :
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vlc -V sdl
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vlc -V x11
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Second, try with an unoptimized YUV transform :
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vlc --yuv yuv
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Third, change your screen depth and/or definition. It quite often helps.
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Lastly, have a look at your XFree86 video driver (nVidia for instance
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releases optimized drivers for its boards).
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2.5 Video is choppy...
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-------------------
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Your system is too slow to decode all pictures. It might be that your
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CPU basically isn't fast enough. It can also be that the subsystem is
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misconfigured/misdriven. Here are some elements to improve speed :
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* Turn on DMA on your DVD device, for instance :
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hdparm -X34 -d1 /dev/dvd
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* Upgrade to the latest XFree86 version and the latest driver for your
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video board ; check that the xvideo plug-in is effectively used with
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vlc -vvvv
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* Kill other applications running...
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2.6 Audio is choppy...
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-------------------
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This is not normal ; it is a known problem and is being investigated.
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2.7 Audio and video are out of sync
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-----------------------------------
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This is not normal. Try using another output plug-in (for instance -A dsp),
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kill esd or artsd if they are running... This is a known problem and
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is being investigated.
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2.8 On some DVDs the subtitles are unreadable
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---------------------------------------------
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This is a known bug and is being investigated.
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2.9 When I try to compile VLC, it breaks on unknown instructions in
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idctaltivec.c
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---------------------------------------------------------------------------
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Unset your CFLAGS environment variable. For instance type
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export CFLAGS= ; ./configure
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Don't try to be cleverer than us :-).
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2.10 Sound volume is too low
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----------------------------
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This is a known problem.
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3. Ports and features
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3.1 MacOS X port
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3.1.1 Does VLC support the ATI DVD hardware acceleration cards ?
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--------------------------------------------------------------
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Currently it doesn't. We'd be glad to support them, but we lack technical
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information on them.
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3.2 Win32 port
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3.2.2 When moving the focus to another window, VLC network input stops
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working properly !
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---------------------------------------------------------------------------
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This is a known problem with Win 95-class systems. Upgrade to an NT-class
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system.
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