Commit 697df95f authored by Diego Biurrun's avatar Diego Biurrun Committed by Jean-Baptiste Kempf

README: Improve descriptions of libdvdcss environment variables

Signed-off-by: Jean-Baptiste Kempf's avatarJean-Baptiste Kempf <jb@videolan.org>
parent a738cbbf
......@@ -20,18 +20,17 @@ Running libdvdcss
The behavior of the library can be changed by setting two environment variables:
DVDCSS_METHOD={title|disc|key}: method for key decryption
title: decrypted title key is guessed from the encrypted sectors of
the stream. Thus it should work with a file as well as the
DVD device. But it sometimes takes too much time to decrypt a title
key and may even fail. With this method, the key is only checked
at the beginning of each title, so it won't work if the key
title: By default the decrypted title key is guessed from the encrypted
sectors of the stream. Thus it should work with a file as well as
the DVD device. But decrypting a title key may take too much time
or even fail. With the title method, the key is only checked at
the beginning of each title, so it will not work if the key
changes in the middle of a title.
disc: the disc key is first cracked ; then all title keys can be
decrypted instantly, which allows us to check them often,
key: the same as "disc" if you don't have a file with player keys at
compilation time. If you do, the decryption of the disc key will
be faster with this method. It is the one that was used by libcss.
This is the default method.
disc: The disc key is cracked first. Afterwards all title keys can be
decrypted instantly, which allows checking them often.
key: The same as the "disc" method if you do not have a file with player
keys at compile time. If you do, disc key decryption will be faster.
This is the default method also employed by libcss.
DVDCSS_VERBOSE={0|1|2}: libdvdcss verbosity
0: no error messages, no debug messages (this is the default)
1: only error messages
......
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