[DVDnav-discuss] start_sector < last_sector check failed on Star Trek: Into Darkness

[Roger Pack]

On 11/20/13, Alexander Roalter <alex at roalter.it> wrote:
> Am 19.11.2013 00:33, schrieb Bryce Harrington:
>> On Tue, Nov 19, 2013 at 12:25:32AM +0100, Alexander Roalter wrote:
>>> On 19.11.2013 00:05, Bryce Harrington wrote:
>>>> STAR_TREK__INTO_DARKNESS generates this check failure:
>>>>
>>>> *** libdvdread: CHECK_VALUE failed in ifo_read.c:1676 ***
>>>> *** for c_adt->cell_adr_table[i].start_sector <
>>>> c_adt->cell_adr_table[i].last_sector ***
>>>>
>>>> (repeats 11 times)
>>>>
>>>> dvdbackup reports similar errors, and also reports:
>>>>
>>>> Error reading VTS_15_0.VOB at block 1999
>>>> padding 49 blocks
>>>> Error reading VTS_15_0.VOB at block 3391
>>>> padding 193 blocks
>>>>
>>>> for VTS 07 to 15 (at which point I killed the process).
>>>>
>>>> I tested this on libdvdread version 4.2.0-1 from Ubuntu precise,
>>>> 4.2.0+20130428 (from Debian), and the current 4.2.1 release candidate.
>>>> No difference in behavior.
>>>>
>>>> The check is this code:
>>>>
>>>>      CHECK_VALUE(c_adt->cell_adr_table[i].start_sector <
>>>>                  c_adt->cell_adr_table[i].last_sector);
>>>>
>>>> Simply commenting out the check doesn't result in proper behavior with
>>>> this disk, so I don't think it's merely an issue with the check itself.
>>>>
>>>> Examining the actual values being encountered, on the first iteration
>>>> (i=0), the start sector is 1343, with a last sector 0.
>>>>
>>>> Any other ideas of things to look at to figure out why this DVD is not
>>>> working with dvdread?
>>>>
>>>> Bryce
>>>
>>> I guess it's the copy protection employed by Paramount. Had major
>>> problems playing Star Trek XI, too. dvdnav does the trick, it's
>>> title 13 on my (german) DVD (that came in the bundle with the BD -
>>> for which I lack the processing key or the VUK).
>>
>> Ah, I don't actually care about having a copy of the movie (I've already
>> seen it), I am just using it for testing dvdread functionality.  Also,
>> might be other DVDs produced with similar oddnesses to them.
>>
>
> I you just want the cases that don’t work, simply have a look out for
> recent DVDs by Paramount, Sony and probably Disney. They all have (or
> had) some sort of copy protection that dvdread couldn’t handle, but
> dvdnav could (more or less ­­– still having problems playing some 5 year
> old paramaount dvds with dvdnav, because it jumps around a lot, and
> seeking doesn’t work as expected, either).

If you can point me to some offending dvd's on say amazon I'd be
willing to try and check it out, though I'm a complete newb here :)
-roger-