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there are plenty of similar questions regarding full-screen playback and VLC, none of them answers my questions though, like here, ore here

I can connect 3 displays to my laptop, and for presentation purposes i want to make a batch file which opens a fullscreen video on one of them (which is connected to a projector). I would like to use a batch file which immediately opens up the video on the desired screen, the command here ALMOST does this: https://superuser.com/a/193342/228841

Additionally, the VLC manual offers this command:

--directx-device=<string>
          Name of desired display device
          In a multiple monitor configuration, you can specify the Windows device name of the display that you want the video window to open on. For example, "\\.\DISPLAY1" or "\\.\DISPLAY2".

So i tried this batch file:

set vlcPath="C:\Program Files\VideoLAN\VLC\vlc.exe"
%vlcPath% %1  --directx-device="\\.\DISPLAY2" --fullscreen --no-video-title-show --no-embedded-video --no-qt-fs-controller

Which doesnt work, the video opens on the primary display. My feeling is that the Display names might be different in Windows 10 then previous Windows versions, but i havent found a way yet to get a list of connected displays from the CLI.

So, where can i find the Display Names and how can pass them to VLC from a command line?

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2 Answers 2

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You can find the display names in the options here:

It's basically DISPLAY1, DISPLAY2 etc

So the command that works for me is --directx-device=DISPLAY5

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The approach in @krasatos' 2021-03 answer to use --directx-device=DISPLAY<#> no longer appears to work.

The following solution is working for me --qt-fullscreen-screennumber=n where n is the display number starting from 0

For example:

  • 1st Display: --qt-fullscreen-screennumber=0
  • 2nd Display: --qt-fullscreen-screennumber=1

For reference, the way I found this was to:

  1. Find the VLC preferences file vlcrc located in %appdata%/vlc/
  2. In the GUI's "Preferences" configure VLC to use DISPLAY1
  3. Make a backup copy of the vlcrc file
  4. Repeat #1-3 but configure it to use DISPLAY2 instead of DISPLAY2
  5. Diff the two backed-up vlcrc files
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