What can I do if I get a movie that is encrypted?
Solution 1:
"the video is encrypted please download codec" this message appears on the screen.
Happens for most illegally acquired movies which require that you install a "decrypter" which is in reality a Trojan Horse.
My advice: Delete it, and purchase the DVD/CD/Blu-Ray or stream it from somewhere legal.
Solution 2:
It means the codec for this particular movie is not installed. Try opening it with VLC. That one opens almost every movie file without needing any codec (they're built-in).
Solution 3:
If the video file consists of two folders, in which one of them is a Video TS folder, you can decrypt them using DVDFab. You can then convert the decrypted Video TS folder to a single file, such as an mp4, using handbrake.