In order to view your linked video you must tell Google Drive that "anyone can view." It's set to "restricted" now.
What version of VP is running? (Look at the bottom-left corner of the window.)
In Videopad OPTIONS, under the MEDIA tab, UNcheck the box that reads "Automatically normalize audio volume of external audio / video files."
If that doesn't help, please upload a file or two that has no sound and similarly make it "anyone can view."
Get the shared (public) link, copy the link and paste it here or to me in a Private Message via the mail envelope in the top-right corner of this forum.