LinuxMCE Forums

General => Installation issues => Topic started by: garg_art2002 on August 21, 2009, 02:16:34 am

Title: Keys dvd.keys.tar.gz
Post by: garg_art2002 on August 21, 2009, 02:16:34 am

In trying to recover a broken Linux MCE, I noticed that there are many files <movie_name>.dvd.keys.tar.gz

What are these? And what is the significance of their loss?

How can they be recreated from <movie_name>.dvd file which is about 7GB in size?

Many thanks.

Title: Re: Keys dvd.keys.tar.gz
Post by: merkur2k on August 21, 2009, 05:08:58 am

they are the css encryption keys for the dvd. as far as i know, there is no way to recover them without having the original dvd. it would kinda defeat the purpose if they were embedded in the iso ;)

Title: Re: Keys dvd.keys.tar.gz
Post by: krys on August 21, 2009, 05:36:20 pm

It was my impression that just playing the movie file would create the new key, no need for the original disk. As long as you have libdvdcss2 installed.
-Krys

Title: Re: Keys dvd.keys.tar.gz
Post by: tschak909 on August 21, 2009, 06:22:34 pm

the keys file is literally just a cache of the decoded keys from libdvdcss, so that it doesn't have to decrypt them again from the disk, resulting in slightly faster playback.

-Thom