In Debian 10, I need to view a mp4 video which I downloaded. Using the menu:
APPLICATIONS -> Multimedia -> mpv Media Player menu I end up with a window labeled MPV with a black screen on which is what appears to be a START icon (an arrow) and the line: Drop files or URLs to play here. Would someone kindly tell me how to make use of the mpv player? The display makes no sense to me. Is not "drop" an operation pertaining to the Window$ environment? How does one go about dropping a file or URL on the window in the Linux environment? RLH