If you get a Quest 2 you can setup a media server in you local network. This server can be used to access your video collection and stream the videos from your PC to your VR headset.
You will need to install a SMB or DNLA capable VR player like HereSphere or Pigasus VR or DeoVR on your Quest 2.
There a many options for media servers. Checkout this thread for recomendations.
I hope this helps a little 