Error cracking CSS key

[Jack Malmostoso]

Hello there forum,

I was trying to backup a DVD (Region 2, I live in Europe) on my Debian AMD64 system, and libdvdcss2 keeps spitting the "Error cracking CSS key" output.
I have increased verbosity and this is what I obtain:

Code: Select all

jack@nostromo:/usr/share/doc/libdvdcss2$ DVDCSS_VERBOSE=2 mencoder dvd://2 -dvd-device /dev/dvd1 -alang English -oac mp3lame -lameopts abr:br=128 -ovc lavc -lavcopts vcodec=mpeg4:vhq:v4mv:vqmin=2:vbitrate=3153 -vf pp=de,crop=0:0:0:0,scale=480:-2 -o /home/jack/coupling_series_2_disc_1_2.avi MEncoder dev-SVN-rUNKNOWN-4.1.2 (C) 2000-2006 MPlayer Team CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ (Family: 15, Model: 35, Stepping: 2) CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1 Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE SSE2 This codecs.conf is too old and incompatible with this MPlayer release! at line 6 libdvdread: Using libdvdcss version 1.2.9 for DVD access libdvdcss debug: opening target `/dev/dvd1' 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 4e:26:26:ba:e2 libdvdcss debug: trying player key 01:af:e3:12:80 libdvdcss debug: decrypted disc key is 1a:22:34:4a:92 libdvdcss debug: using CSS key cache dir: /home/jack/.dvdcss/COUPLING_SERIES_2_DISC_1-2002090411085200-1a22344a92/ There are 7 titles on this DVD. There are 6 chapters in this DVD title. There are 1 angles in this DVD title. 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 0x00000147 libdvdcss debug: title key found in cache 00:00:00:00:00 libdvdread: Elapsed time 0 libdvdread: Get key for /VIDEO_TS/VTS_01_0.VOB at 0x000001b1 libdvdcss debug: title key found in cache d7:48:76:e8:16 libdvdread: Elapsed time 0 libdvdread: Get key for /VIDEO_TS/VTS_01_1.VOB at 0x00009d80 libdvdcss debug: getting title key at block 40320 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: ioctl ReportAgid failed, invalidating AGID 0 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 4e:26:26:ba:e2 libdvdcss debug: trying player key 01:af:e3:12:80 libdvdcss debug: decrypted disc key is 1a:22:34:4a:92 libdvdcss debug: cracking title key at block 40320 libdvdcss debug: non MPEG block found at block 40337 (end of title) libdvdcss debug: end of title reached libdvdcss debug: successful attempts 0/0, scrambled blocks 5/17 libdvdcss debug: title key is 00:00:00:00:00 libdvdcss error: fatal error in vts css key libdvdread: Error cracking CSS key for /VIDEO_TS/VTS_01_1.VOB (0x00009d80)!! libdvdread: Elapsed time 0 libdvdread: Get key for /VIDEO_TS/VTS_02_0.VOB at 0x00009db7 libdvdcss debug: title key found in cache d7:48:76:e8:17 libdvdread: Elapsed time 0 libdvdread: Get key for /VIDEO_TS/VTS_02_1.VOB at 0x00009e04 libdvdcss debug: getting title key at block 40452 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: ioctl ReportAgid failed, invalidating AGID 0 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 4e:26:26:ba:e2 libdvdcss debug: trying player key 01:af:e3:12:80 libdvdcss debug: decrypted disc key is 1a:22:34:4a:92 libdvdcss debug: cracking title key at block 40452 libdvdcss debug: at block 44548, still cracking... <CUT> libdvdcss debug: non MPEG block found at block 717378 (end of title) libdvdcss debug: end of title reached libdvdcss debug: successful attempts 0/1394, scrambled blocks 110305/676926 libdvdcss debug: title key is 00:00:00:00:00 libdvdcss error: fatal error in vts css key libdvdread: Error cracking CSS key for /VIDEO_TS/VTS_02_1.VOB (0x00009e04)!! libdvdread: Elapsed time 187 libdvdread: Get key for /VIDEO_TS/VTS_03_0.VOB at 0x000af268 libdvdcss debug: title key found in cache d7:48:76:e8:18 libdvdread: Elapsed time 0 libdvdread: Get key for /VIDEO_TS/VTS_03_1.VOB at 0x000af2b5 libdvdcss debug: getting title key at block 717493 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: ioctl ReportAgid failed, invalidating AGID 0 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 4e:26:26:ba:e2 libdvdcss debug: trying player key 01:af:e3:12:80 libdvdcss debug: decrypted disc key is 1a:22:34:4a:92 libdvdcss debug: cracking title key at block 717493 libdvdcss debug: at block 721589, still cracking... libdvdcss debug: at block 725685, still cracking... <CUT>

So I have tried to do the same thing on my iBook (running the same version of libdvdcss2) and it worked flawlessly. I then thought it was a problem with my DVD players (BOTH ) on the desktop computer, so I have tried with another DVD, but that worked perfectly.

I am a bit puzzled: I have read that it is possible that some sectors of the DVD are intentionally full of rubbish and libdvdcss2 tends to choke on them (but then, why does it work on the iBook?); on the other hand another DVD works fine, so I would exclude hardware problems, or else that my DVD players are set to the wrong region.

I should probably add that if I try copying the files from the DVD to my hard drive, I get lots of I/O errors.

I will now run a loooong session of memtest in order to see if it's a hardware problem, but in the meanwhile any suggestion is more than welcome.

Thanks for your help!

[Jack Malmostoso]

In case you're wondering, the same happens with VLC, not only with mencoder. As far as I have understood videolan.org is the home for libdvdcss2 too

[Jack Malmostoso]

I have tested my RAM for 31 hours with memtest and no errors were detected.

Maybe this is AMD64 specific?

[Jack Malmostoso]

I set my dvd player on region 2 using the regionset utility and the error disappeared.

Hope this can help someone else.

[martti]

This did help me in fact.

I wanted to watch Animatrix (Europe), and after following your tip it worked.
But in addition I had weird colours in the main menus, about which I don't have a clue yet.
It worked when I tried to open it in DVD only mode.

[udude]

This is an old thread... but will try anyway.
I have a DVD image of a dvd disc I no longer have. The image was created using dd or readom (can't remember which) when no region was set on the dvd drive:

$ regionset
...
drive plays discs from region(s):, mask=0xFF

Looks like the image contains valid video, b/c I can play it w/mplayer:
mplayer -v dvd://1 -dvd-device dvd_image.iso

I'm trying to vobcopy-mirror the VIDEO_TS out of it and repack it w/mkisofs:
$ mkisofs -dvd-video ...

Running "vobcopy -m ..." on it's mounted folder I'm getting the following error:

libdvdread: Error cracking CSS key for /VIDEO_TS/...

I'm kinda nub in this so not sure...
Anyone knows if I still have a chance to get vobcopy to succeed?

[Jean-Baptiste Kempf]

Install libdvdcss2