[mythtv-users] Many new dvd's not working

[Tom Dexter]

On Sun, Dec 12, 2010 at 4:40 AM, James Courtier-Dutton
<james.dutton at gmail.com> wrote:
> On 11 December 2010 22:17, jedi <jedi at mishnet.org> wrote:
>> On Sat, Dec 11, 2010 at 09:22:35AM -0800, Neil Salstrom wrote:
>>> On Sat, Dec 11, 2010 at 5:28 AM, James Courtier-Dutton
>>> <james.dutton at gmail.com> wrote:
>>> >
>>> > Have you tried playing it in "xine".
>>> >
>>> > If you start xine with "xine --verbose dvd://" it will give more
>>> > information as to what it happening.
>>> > If the DVD works in xine but not in myth then it is a bug in myth.
>>> > If it fails in both xine and myth, then there is some new DVD feature
>>> > that open source does not support yet.
>>> >
>>> > Kind Regards
>>> >
>>> > James
>>> > _______________________________________________
>>> > mythtv-users mailing list
>>> > mythtv-users at mythtv.org
>>> > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>>> >
>>>
>>> I did not try using xine but playing from DVD in VLC worked flawlessly.
>>
>>    I suspect that VLC treats the disc more as a conventional console DVD
>> player would. My usual rip methodology didn't work on that disk (mplayer
>> with the dumpstream option), so I just went straight for AnyDVD. Disney
>> disks in general seem to be more problematic and Pixar is now a part of
>> the mousey beast.
>>
>>    I also see more trouble with ABC DVDs too (that Disney connection again).
>>
>>    I have very little trouble with any other DVDs.
>
> I wrote quite a lot of the dvdnav code for Linux. VLC, Myth, mplayer
> all use the same lib for DVD playing.
> I do not understand what "treats the disc more as a conventional
> console DVD player would" means.
> Whether one is playing the DVD normally, or extracting the main title
> from it, the functions required from dvdnav are identical.
> One feature that has not been implemented in dvdnav yet is error-correcting.
> If dvdnav see a sector error on the DVD is exits.
> What it should really do is do a small jump forward to the next VOBU
> when it sees a sector error.
> So, I expect the problems people are seeing is that the DVD they are
> trying to play has scratches on it, and therefore returns some sector
> errors.
>
> So, if people wish to actually fix the problems users seem to be
> getting, they need to implement error concealment within dvdnav.
> I do not have any time because I am working on other open source projects.
>
> Kind Regards
>
> James

Interesting...thanks for the reply James!  Question: Can things like
Sony's Arccos (which as I understand it is actually corrupted sectors)
trip that up as well?  Thanks.

Tom