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qubes-doc/user/troubleshooting/media-troubleshooting.md
Marek Marczykowski-Górecki 3806ecf338
Remove extra newlines at the beginning/end of files 
Those are redundant, and yaml parser strips them in fact. By removing
them, loading and saving yaml file without any change indeed produce the
same output. This is useful for prepare_for_translation.py script (which
adds lang and ref tags) - to produce only change that indeed was made.
2021-06-24 16:07:23 +02:00

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en doc /doc/media-troubleshooting/ 235 Media Troubleshooting

Can't play media videos in a VM due to missing codecs

If you’re having trouble playing a video file in a qube, you’re probably missing the required codecs. The easiest way to resolve this is to install VLC Media Player and use that to play your video files. You can do this in multiple different template distros by following the instructions here.

Video lagging

Playing videos may cause lags since software decoding uses a lot of CPU.

Depending on your video player, there are some settings that may smoothen video plays:

  • If using VLC media player, go to Tools--> Preferences --> Video --> Output. By default, the Output is set to "Automatic". Go through the list and try out other output options to see if any makes videos run smoother.
  • If using mpv media player, you may be able to improve performance by entering mpv --profile=sw-fast --vo=x11 in a terminal.
  • For video lags when playing videos from a browser, disable hardware acceleration in the browser. If the problem arises when watching streams, it may be smoother to use streamlink to view streams in mpv instead of using the browser.