I am currently digitized a bunch of DVDs. Some are encrypted, and some are not. My method for digitizing a DVD depends on whether or not it is encrypted, so I am looking for a command-line method to determine if a DVD is encrypted or not.

\**Note:* I know that DVDs are often encrypted with the [Content Scramble System (CSS)](https://en.wikipedia.org/wiki/Content_Scramble_System), and that you need to install a package such as [libdvdcss](https://www.videolan.org/developers/libdvdcss.html) to read encrypted DVDs.