MPlayer FAQ

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Revision as of 09:14, 10 December 2006 by Compn (talk | contribs) (add a nasty problem with my NIC that reimar found for me.)
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This page will attempt to list all of the frequent questions we get in the #mplayer irc channel on irc.freenode.net.


Official MPlayer Frequently asked Questions: http://www.mplayerhq.hu/DOCS/HTML/en/faq.html


MPlayer FAQ by relaxed: http://johnvansickle.com/faq


Feel free to add your questions/answers here, and include important error messages.

Questions from #mplayer channel:

Hi, My cpu is too slow, help!

  • try -nodouble and -lavdopts lowres=1 -vfm ffmpeg or for H264 -lavdopts skiploopfilter=all


Hi, I am looking for a way to automatically convert ogg to mp3 I must give a directory and have everything in converted is it possible to achievve such a thing with mplayer ?

  • use aconvert found in mplayer source TOOLS/aconvert .


anyone know how to play mp4 files with sound? i can only see video but no audio

  • check mplayer output for helpful messages.
  • Requested audio codec family [faad] (afm=faad) not available. Enable it at compilation.
  • your mplayer was not compiled with faad support. recompile it after installing libfaad package.


Hi folks, is there a way to "tell" mplayer (not gmplayer) not to exit when a file has been played and then wait for some new input? via a fifo or whatever


Anyway to dump a dvd audio stream really fast?

  • mplayer -dumpaudio dvd:// -speed 90 -vc null -vo null -benchmark


i have a corrupt file that mplayer plays, how do i get a new "clean" version of the audio?

  • mplayer file -ao pcm


X11 error: BadAlloc (insufficient resources for operation)?,?% 0 0 MPlayer interrupted by signal 6 in module: vo_check_events

  • Option "LinearAlloc" "8192" in my xorg.conf is what I need


i have a widescreen lcd monitor and everything is stretched, help!

  • use -monitoraspect 16:10 or -monitorpixelaspect 1.125


how do I set the video window to double size when running mplayer from command line? cannot find it in man file...

  • mplayer -xy 2


How to setup XvMC ?

  • Get xmvc dev lib (libxvmc-dev) and compile MPlayer with --enable-xvmc
  • Point /etc/X11/XvMCConfig to your /lib/libXvMCNVIDIA.so.* , for example : echo "libXvMCNVIDIA.so.1.0.9742" > /etc/X11/XvMCConfig
  • mplayer -vc ffmpeg12mc -vo xvmc yourmovie.mpeg2
  • NB : works only with mpeg2 and mpeg.


How to include mplayer in a java application or program or library?


How to set video as wallpaper ?

  • mplayer -rootwin yourmovie (Only works with the x11, xv, xmga, xvidix, quartz, macosx and directx video output drivers.)
  • Gnome : gconftool-2 -s /apps/nautilus/preferences/show_desktop -t bool false (to disable background)


having adjusted the hue/contrast previously, what's an easy way to set them all back to neutral?


why can`t I make bigger the displayed image whit my mplayer? my image is small and black border / frame around tiny video, what gives?

  • mplayer -zoom or zoom=1 in config
  • but first try setting mplayer -vo xv or vo=xv in config


Hi, playing a 3GP file, I get "Cannot find codec 'amr_nb' in libavcodec". How can I solve this please


i get errors playing h264 like these "[h264 @ 0xd96950]concealing 1840 DC, 1840 AC, 1840 MV errors" what gives?

  • check your config and options for 'framedrop' and disable/turn it off. try also -noframedrop
  • its possible your file is incomplete, try md5sum against the original or rehash it using your torrent program.


i want a concise comparison of the various options - say, their scores on performance measures - to help choose between em. instead there are a few sentences on the origin and implementation of each one.

  • different vo's are faster/slower on different pc, drivers and video cards, its almost impossible to tell whats fastest for everyone.
  • use mplayer -nosound -benchmark file -vo (vohere) to test your video output speed
  • vo's with hardware accelerated output (like xv, vidix, directx, macosx/quartz) will usually be faster than vesa, fb, gl/gl2. but not always.


how do i increase the subtitle font size? / Hi, im using a Mplayer windows gui. is there a way to make subtitles smaller? mpui its named

  • subfont-text-scale=3 in config or mplayer -subfont-text-scale 3 file


none of the "freetype" commands in man work when i attempt to use -subfont-autoscale or -subfont-text-scale it says "unknown option on the command line" or Cannot load bitmap font: /usr/share/fonts/truetype/truetype/msttcorefonts/Arial.ttf

  • install freetype/truetype and recompile mplayer


i recompiled mplayer and now it doesn't complain about -subfont-autoscale or -subfont-text-scale unfortunately, they don't do anything

  • symlink any ttf font to ~/.mplayer/subfont.ttf or
  • specify a font, mplayer -font /dir/somefont.ttf -subfont-text-scale 3 file.avi


how do i expand the "area" so that the subtitles are lower on the screen/ put the subs in the black bars

  • mplayer -vf expand=:-100::2


whats the best deinterlacing filter?


help! when i play a file over the network i get desync and cpu is at 100%, but if i play it locally its fine!

  • are you using a ne2000/Realtek RTL8019 LAN card? it uses a lot of cpu when transferring data.
  • check the ethernet howto for tips and try to decrease your tcp window size.
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