Re: What to do with a DVD-RW +VR disk? UDF file system
On Sat, 29 Oct 2011 05:22:39 +0100, Dom wrote:
> On 28/10/11 21:12, Hendrik Boom wrote: (snip lots of stuff I can't help
> with)
>
>> notlookedfor:/home/hendrik# ls -al /mnt/DVD_RTAV/ total 3301448
>> d--------- 2 4294967295 4294967295 2048 Dec 31 2001 . drwxrwxrwx
>> 3 4294967295 4294967295 2048 Oct 2 17:52 .. -rw-rw-rw- 1
>> 4294967295 4294967295 122880 Nov 28 2002 VR_MANGR.IFO -rw-rw-rw- 1
>> 4294967295 4294967295 3380555776 Nov 28 2002 VR_MOVIE.VRO
>> notlookedfor:/home/hendrik# file /mnt/DVD_RTAV/*
>> /mnt/DVD_RTAV/VR_MANGR.IFO: data
>> /mnt/DVD_RTAV/VR_MOVIE.VRO: MPEG sequence, v2, program multiplex
>> notlookedfor:/home/hendrik#
>>
>>
>> I say "play".
>>
>> shell window gets
>>
>> libdvdnav: Using dvdnav version 4.1.4 libdvdread: Using libdvdcss
>> version 1.2.10 for DVD access libdvdnav:DVDOpenFileUDF:UDFFindFile
>> /VIDEO_TS/VIDEO_TS.IFO failed libdvdnav:DVDOpenFileUDF:UDFFindFile
>> /VIDEO_TS/VIDEO_TS.BUP failed libdvdread: Can't open file VIDEO_TS.IFO.
>> libdvdnav: vm: failed to read VIDEO_TS.IFO libdvdread: Using libdvdcss
>> version 1.2.10 for DVD access libdvdnav:DVDOpenFileUDF:UDFFindFile
>> /VIDEO_TS/VIDEO_TS.IFO failed libdvdnav:DVDOpenFileUDF:UDFFindFile
>> /VIDEO_TS/VIDEO_TS.BUP failed libdvdread: Can't open file VIDEO_TS.BU.
>> [0xb4c00624] main input error: open of `dvd:///dev/dvd' failed: (null)
>
> Well, it seems +VR discs don't use the same file names (and probably
> content/format) as standard DVD discs.
>
>> VLC is unable to open the MRL 'dvd:///dev/dvd'. Check the log for
>> details.
>
> Has it logged anything to /var/log/(something)?
Couldn't find anything. The only logs that even mention vlc are
aptitude, dpkg, and popularity-contest.
>
> Hmm, a quick search implies there might be a vlc-log.txt file somewhere.
> Check your home directory.
Nothing in ls -a *vlc* */*vlc* */*/*vlc*
>
>> What's my next step? Presumably it's a permissions problem.
>
> I don't think it's permissions (you did log right out and in again after
> adding yourself to the crdom group, right?)
Oops! Will do that and try again when I have time, probably later this
weekend.
>
>> What is the meaning of user ID and group ID 4294967295 anyway?
>
> Convert those values to Hex and you get FFFFFFFF (or -1). It's a dummy
> value. Probably to avoid matching with any exisiting user/group IDs.
I didn't know there even were 4-byte UIDs. I guess my brain is still on
Unix on the PDP-11.
>
>> Should I copy the VR_MANGR.IFO and VR_MOVIE.VRO files as root and
>> change their permissinos?
>
> Try opening the VR_MOVIE.VRO file directly from VLC. Some searching
> implies that might work.
>
I'll try that. I'll also look for a spec for this file format and its
associated .IFO.
>> Should I run vlc as root?
>
> That's generally not a good idea.
I didn't think so either. But it might provide a data point if it worked.
>
>> Should I try to chmod the files on the DVD itself? Would that even
>> work?
>
> I doubt that will work.
No. But might there be some way of overriding file-system permissions
when mounting a volume?
Or maybe using sshfs logging into my machine as root? Again, to be done
carefully if at all.
>
> Good luck trying to read that disc.
> I hope I've helped a little.
Thanks.
-- hendrik
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