Re: Bad picture while running DVD

Wed Aug 13 2003, Robert Schimpfle wrote:
> Here's what dvd_test says:
> 
> Robert@linux:~/dvd_test> ./dvd_test /dev/dvd
> 
> dvd_test output: (/dev/dvd)
> ================
> 
> Linux 2.4.20-4GB-athlon #1 Mon Mar 17 17:56:47 UTC 2003 i686
> lrwxrwxrwx    1 root     root            3 2003-04-11 23:11 /dev/dvd ->
> hdc
> brw-------    1 Robert   disk      22,   0 2003-03-14 14:07 /dev/dvd
> 16040352
> 512
[snip]
> --- Copyright ---
> ERR: ret: 0, status: 0
> Copyright Information
> Copyright Protection System Type: CSS/CPPM
> Region Management Information: fd
> --- RPC State ---
> ERR: ret: 0, status: 0
> Report Key Parameter List - RPC State
> Type Code: 0
> Number of Vendor Resets Available: 4
> Number of User Controlled Changes Available: 5
> Region Mask: ff RPC Scheme: 01

[snip]
> --- seek read ---
> success seeking to lba 0
> success reading lba 0
> success seeking to lba 16
> success reading lba 16
> success seeking to lba 256
> success reading lba 256
> success seeking to lba 512
> ERR: read: Input/output error
> ERR: lba: 512
> success seeking to lba 1024
> ERR: read: Input/output error
> ERR: lba: 1024
> success seeking to lba 2048
> success reading lba 2048
> success seeking to lba 10000
> ERR: read: Input/output error
> ERR: lba: 10000
> Robert@linux:~/dvd_test>
> 

The Disc is region protected. You have never set the region of you drive.
You get surious read errors for some blocks.

I'd try to set the region of the drive, libdvdcss should be abel to
crack the title keys like it did now if you have DVD from different
regions.  (Europe is region 2) 
See http://www.dtek.chalmers.se/groups/dvd/faq.shtml#37 for more help.

> libdvdcss debug: drive authenticated, using variant 0
> libdvdcss debug: authentication established
> libdvdcss debug: ioctl ReadTitleKey failed (region mismatch?)


-- 
Håkan Hjort