External devices video files not showing

Are you using Lightroom (Lr icon) or Lightroom Classic (LrC icon)? What version NUMBER? We need the version NUMBER and not words like “latest” or “up-to-date”.

What is your operating system and version NUMBER?

Where are you looking that you cannot see a video file? Can you include a screen capture of where you don’t see this expected video file? What type of video file is it: MP4, MOV, AVI, other?

What external devices are you referring to?