I recently got a new 4K monitor and now whenever I play a video on this monitor, VLC only displays the video in the upper left quarter of the screen, when it's running in a window or full screen. When running in a window, the video display is actually somewhat falls slightly outside (to the left) of the main VLC window.

The resolution of the video makes no difference.

I tried a different player, Media Player Classic Home Cinema, and it plays it perfectly, but I would rather figure out how to get VLC to work.

I am running Windows 10 with a GTX 1060 video card.

I have completely no idea where to even start looking to troubleshoot this, I've done a fair amount of googling but haven't found anyone else with this problem.

  • Does your setup have dual-monitors? VLC will use the resolution of the main screen.
    – harrymc
    Apr 5 '19 at 19:28
  • It does, and the main screen is 4K. Regardless, wouldn't it adjust as you switch screens?
    – tbone
    Apr 5 '19 at 19:31
  • No, this is a problem with VLC.
    – harrymc
    Apr 5 '19 at 19:36
  • But, VLC is opening on the main (4K) screen, yet displaying in 1080....??? Surely it's capable of playing 4K content?
    – tbone
    Apr 6 '19 at 0:40
  • Who would downvote a question about a legitimate technical issue?
    – tbone
    Apr 6 '19 at 20:06

On VLC Shortcut:

Right click, Properties, Compatibility, Change High DPI Settings

High DPI Scaling Override Override high DPI scaling behavior: Checked Scaling performed by: select Application

enter image description here


I believe that this is a known problem with VLC on a computer with dual monitors. For best results the two monitors should have the same resolution.

As VLC is a Qt application, you might try to create an environment variable called QT_AUTO_SCREEN_SCALE_FACTOR with the value of 0

You might also raise the question on the The VideoLAN Forums, where you might get an answer from the developer.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.