The Singular Dashboard doesn't host video files but if you need to play a few small video clips in your overlays, they can be hosted and accessed elsewhere. One easy and free option is to host video files on your OneDrive.
Simply upload the files to your OneDrive and follow the steps below for use in a Video Clip Widget.
1. Access OneDrive via Microsoft Edge
2. Download the hosted clip
Right click on your uploaded OneDrive video file and select "Download".