I used some other software to re-organise a large number of media files. Unfortunately I omitted the file extension part in their renaming utility and so have a bunch of files with no file extension. Using VLC, I can see that the codec info is there so I need to read the file, take the codec info and then append .mp4, .avi or whatever it may be. Each video is stored in a separate folder but all within a parent folder so I need it to be recursive, too.
Unfortunately, I've never used this software and have no idea where to start. The help page looks detailed, but I don't know what I'm looking for.
Anybody able to explain where to start and/or how to do this? Assuming it is possible, of course.