libdvdcss

[Jayhel Guislain]

I installed libdvdcss on Mandrake 10.1 with either Kaffeine or Totem I still
get the message that the DVD is encrypted. why? Should I execute some kind of
command to decript that DVD?

Pls Help.

Jayhel

[Rainer Klute]

Post by Jayhel Guislain
I installed libdvdcss on Mandrake 10.1 with either Kaffeine or Totem I still
get the message that the DVD is encrypted. why? Should I execute some kind of
command to decript that DVD?

Perhaps its your DVD drive. I have a DVD with four tracks: With of my
DVD drives cannot play one of the films since libdvdcss cannot decrypt
the track key. Another DVD drive has no problems with that track. Hm.

Best regards
Rainer Klute

Rainer Klute IT-Consulting GmbH
Dipl.-Inform.
Rainer Klute E-Mail: ***@rainer-klute.de
Körner Grund 24 Telefon: [phone]
D-44143 Dortmund Telefax: [phone]

Inhibit software patents: http://www.nosoftwarepatents.com/

[Wout Mertens]

Post by Jayhel Guislain
I installed libdvdcss on Mandrake 10.1 with either Kaffeine or Totem I
still
get the message that the DVD is encrypted. why? Should I execute some
kind of
command to decript that DVD?

I also have problems with one drive and not with the other.

Could you set the environment variable DVDCSS_VERBOSE to 2 before
running a dvd player that uses libdvdcss?

For example:
$ export DVDCSS_VERBOSE=2
$ vlc dvd://

I'll try to do that as well when I get home.

Cheers,

Wout.

[Wout Mertens]

Post by Wout Mertens

Post by Jayhel Guislain
I installed libdvdcss on Mandrake 10.1 with either Kaffeine or Totem
I still
get the message that the DVD is encrypted. why? Should I execute some
kind of
command to decript that DVD?

I also have problems with one drive and not with the other.
Could you set the environment variable DVDCSS_VERBOSE to 2 before
running a dvd player that uses libdvdcss?
$ export DVDCSS_VERBOSE=2
$ vlc dvd://

This is what I get with a region 1 DVD on a region 2 Apple Powerbook
Superdrive:
========
libdvdnav: Using dvdnav version 0.1.10 from http://dvd.sf.net
libdvdread: Using libdvdcss version 1.2.8 for DVD access
libdvdcss debug: opening target `/dev/rdisk2'
libdvdcss debug: using libc for access
libdvdcss debug: disc is scrambled
libdvdcss debug: requesting AGID
libdvdcss debug: drive authenticated, using variant 0
libdvdcss debug: authentication established
libdvdcss debug: GetASF authenticated, ASF=1
libdvdcss debug: decrypting disc key with player keys
libdvdcss debug: decrypted disc key is 22:79:88:b5:d6
libdvdcss debug: using CSS key cache dir:
/Users/wmertens/.dvdcss/KOYAANISQATSI#2002061810341900/
libdvdnav: DVD Title: KOYAANISQATSI
libdvdnav: DVD Serial Number: 3D0F6F1B___MVB__
libdvdnav: DVD Title (Alternative):
libdvdnav: Unable to find map file
'/Users/wmertens/.dvdnav/KOYAANISQATSI.map'
libdvdnav: DVD disk reports itself with Region mask 0x00fe0000.
Regions: 1

libdvdread: Attempting to retrieve all CSS keys
libdvdread: This can take a _long_ time, please be patient

libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x00000145
libdvdcss debug: key found in cache
[...]
libdvdread: Get key for /VIDEO_TS/VTS_08_1.VOB at 0x001f6637
libdvdcss debug: key found in cache
libdvdread: Elapsed time 0
libdvdread: Found 8 VTS's
libdvdread: Elapsed time 0
libdvdnav: Using dvdnav version 0.1.10 from http://dvd.sf.net
libdvdread: Using libdvdcss version 1.2.8 for DVD access
libdvdcss debug: opening target `/dev/rdisk2'
libdvdcss debug: using libc for access
libdvdcss debug: disc is scrambled
libdvdcss debug: requesting AGID
libdvdcss debug: drive authenticated, using variant 0
libdvdcss debug: authentication established
libdvdcss debug: GetASF authenticated, ASF=1
libdvdcss debug: decrypting disc key with player keys
libdvdcss debug: decrypted disc key is 22:79:88:b5:d6
libdvdcss debug: using CSS key cache dir:
/Users/wmertens/.dvdcss/KOYAANISQATSI#2002061810341900/
libdvdnav: DVD Title: KOYAANISQATSI
libdvdnav: DVD Serial Number: 3D0F6F1B___MVB__
libdvdnav: DVD Title (Alternative):
libdvdnav: Unable to find map file
'/Users/wmertens/.dvdnav/KOYAANISQATSI.map'
libdvdnav: DVD disk reports itself with Region mask 0x00fe0000.
Regions: 1

libdvdread: Attempting to retrieve all CSS keys
libdvdread: This can take a _long_ time, please be patient

libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x00000145
libdvdcss debug: key found in cache
libdvdread: Get key for /VIDEO_TS/VTS_08_1.VOB at 0x001f6637
libdvdcss debug: key found in cache
libdvdread: Elapsed time 0
libdvdread: Found 8 VTS's
libdvdread: Elapsed time 0
libdvdcss error: read error
libdvdcss error: read error
=======

I then tried some more, with the cache turned off and the method set to
key:
=======
$ DVDCSS_METHOD=key
$ DVDCSS_CACHE=/dev/null
$ vlc dvd:///dev/rdisk2
[...]
libdvdread: Get key for /VIDEO_TS/VTS_01_0.VOB at 0x00000199
libdvdcss debug: getting title key the classic way
libdvdcss debug: requesting AGID
libdvdcss debug: drive authenticated, using variant 0
libdvdcss debug: authentication established
libdvdcss debug: ioctl ReadTitleKey failed (region mismatch?)
libdvdcss debug: GetASF not authenticated, ASF=0
libdvdcss debug: lost ASF requesting title key
libdvdcss debug: resetting drive and cracking title key
libdvdcss debug: requesting AGID
libdvdcss debug: drive authenticated, using variant 0
libdvdcss debug: authentication established
libdvdcss debug: GetASF authenticated, ASF=1
libdvdcss debug: decrypting disc key with player keys
libdvdcss debug: decrypted disc key is 22:79:88:b5:d6
libdvdcss debug: cracking title key
libdvdcss error: read error
libdvdcss debug: read error, resorting to secret arcanes to recover
libdvdcss debug: opening target `/dev/rdisk2'
libdvdcss debug: using libc for access
libdvdcss error: read error
libdvdcss debug: end of title reached
libdvdcss debug: 0 of 0 attempts successful, 0 of 2 blocks scrambled
libdvdcss debug: file was unscrambled
libdvdcss debug: title key is 00:00:00:00:00
libdvdcss debug: unencrypted title
libdvdread: Elapsed time 1
=======


Compare that to an external USB DVD drive, with the same setup on the
same system:
=======
$ vlc dvd:///dev/rdisk3
[...]
libdvdread: Get key for /VIDEO_TS/VTS_01_0.VOB at 0x00000199
libdvdcss debug: getting title key the classic way
libdvdcss debug: requesting AGID
libdvdcss debug: drive authenticated, using variant 0
libdvdcss debug: authentication established
libdvdcss debug: ioctl ReadTitleKey failed (region mismatch?)
libdvdcss debug: GetASF not authenticated, ASF=0
libdvdcss debug: lost ASF requesting title key
libdvdcss debug: resetting drive and cracking title key
libdvdcss debug: requesting AGID
libdvdcss debug: drive authenticated, using variant 0
libdvdcss debug: authentication established
libdvdcss debug: GetASF authenticated, ASF=1
libdvdcss debug: decrypting disc key with player keys
libdvdcss debug: decrypted disc key is 22:79:88:b5:d6
libdvdcss debug: cracking title key
libdvdcss debug: 1 of 1 attempts successful, 1 of 3 blocks scrambled
libdvdcss debug: vts key initialized
libdvdcss debug: title key is e1:c7:61:a9:39
libdvdread: Elapsed time 0
=======


So on the same system with the same software but a different drive, it
works. The difference seems to be in the "cracking title key" part,
which reports a read error.

Does anybody have any ideas on how to tackle this?

Cheers,

Wout.

[Rainer Klute]

Post by Wout Mertens
So on the same system with the same software but a different drive, it
works. The difference seems to be in the "cracking title key" part,
which reports a read error.

Some weeks ago I tracked this down to an ioctl() call (don't remember
which) that works on one drive and doesn't work on the other. However,
since I am not that hardware-addicted guy I have no idea how to handle
it.

Best regards
Rainer Klute

Rainer Klute IT-Consulting GmbH
Dipl.-Inform.
Rainer Klute E-Mail: ***@rainer-klute.de
Körner Grund 24 Telefon: [phone]
D-44143 Dortmund Telefax: [phone]

Inhibit software patents: http://www.nosoftwarepatents.com/

[Wout Mertens]

Post by Rainer Klute

Post by Wout Mertens
So on the same system with the same software but a different drive, it
works. The difference seems to be in the "cracking title key" part,
which reports a read error.

Some weeks ago I tracked this down to an ioctl() call (don't remember
which) that works on one drive and doesn't work on the other. However,
since I am not that hardware-addicted guy I have no idea how to handle
it.

Well... could you try to find it again? It would be a starting point...


Thanks!

Wout.