[Dvdrtools-users] video dvd backup

[Alessio Sangalli]

Hi I have a question; this could be a bit OT because dvd-record is only 
the last piece in the process.

Few days ago I've backed up four DVDs on my hard disk with the dvdbackup 
command:

dvdbackup -M -i /dev/dvd -o dvd/

not I have the directory

dvd/LOTR_SEE_D1/VIDEO_TS/ with a lot of VOB, BUP, IFO files.

I can play the dvd with mplayer (specifying -dvd-device dvd/LOTR_SEE_D1) 
or 'navigate' it with ogle -u cli dvd/LOTR_SEE_D1 etc etc.

Now, the total size of the ripped files is over 7GB. There are few 
titles, however, which I could skip, to reach a size of less than 4.7GB.

I've tried to extract the 'main feature' of the dvd or a single title 
with dvdbackup, but I have problems - probably because I read from a 
hard disc directory and not from a real dvd device:

$ dvdbackup -F -i /root/dvd/LOTR_SEE_D1/ -o backup/
libdvdread: Using libdvdcss version 1.2.2 for DVD access
libdvdread: Couldn't find device name.
Can't read title from device /root/dvd/LOTR_SEE_D1/
You must provide a title name when you read DVD-Video structure direct 
from the HD

ok, it should be enought to supply a -n switch; as the last line says, 
reading from hard disc *should be* supported.

$ dvdbackup -F -i /root/dvd/LOTR_SEE_D1/ -o backup/ -n lotr1
libdvdread: Using libdvdcss version 1.2.2 for DVD access
libdvdread: Couldn't find device name.
libdvdread: Fatal error in block read.
Mirror of the main feature of the DVD failed

and it exits.

I've tried other parameters, compiled dvdbackup in debug mode, etc, but 
I always get suach an error. I've also tried to hack the sources and 
read libdvdread documentation... but I was not able to find a solution.

Do you have any hints, or can you suggest me some reference (another 
mailing list, or the author of dvdbackup, a web site etc)???

thank you
bye
as