20201205_200806.mp4

: If the file won't open, use VLC Media Player , which supports almost all codecs and can often play slightly corrupted files. 3. Finding the Origin (Metadata)

If you found this file and don't know what it is, you can check its "Metadata" to find the device that recorded it or the location (if GPS was enabled). 20201205_200806.mp4

: Right-click the file and select Open with to choose Windows Media Player or Movies & TV. : If the file won't open, use VLC

: Right-click the file, select Properties , and go to the Details tab . : If the file won't open

: Simply tap the file in your "Gallery" or "Files" app.