Configure VLC to work with Zoom Screen Sharing Tools - Preferences or Ctrl P Interface - un-check Integrate video in interface Interface - check Allow only one instance Audio - check Always reset audio start level to: 70% (change this level as required) Video - un-check Window decorations Subtitles/OSD - un-check Show media title on video start Save Test. double click an mp4. it should open a second window without borders. You cannot move or resize but that does not matter.