libdvdcss is a simple library designed for accessing DVDs like a block
device without having to worry about the decryption.
It can be controlled through environment variables:
DVDCSS_VERBOSE={0|1|2}:
0: no error messages, no debug messages,
1: only error messages (this is the default)
2: error and debug messages
DVDCSS_CACHE=directory:
specifies an alternate directory in which to store title key
values. ~/.dvdcss is the default.
WWW: http://www.videolan.org/developers/libdvdcss.html
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