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To gather info about the DVD:
dvdbackup -I
/dev/dvd is the default device tried - you need to use -i if your device
name is different.
General backup information:
If your backup directory is /my/dvd/backup/dir/ specified with the -o
flag, then dvdbackup will create a DVD-Video structure under
/my/dvd/backup/dir/TITLE_NAME/VIDEO_TS. If the -o flag is omitted, the
current directory is used.
Since the title is "unique" you can use the same directory for all your
DVD backups. If it happens to have a generic title dvdbackup will exit
with a return value of 2. And you will need to specify a title name with
the -n switch.
dvdbackup will always mimic the original DVD-Video structure. Hence if
you e.g. use the -M (mirror) you will get an exact duplicate of the
original. This means that every file will be have the same size as the
original one. Like wise goes also for the -F and the -T switch.
However the -t and (-t -s/-e) switch is a bit different the titles
sectors will be written to the original file but not at the same offset
as the original one since they may be gaps in the cell structure that we
do not fill.
To backup the whole DVD
dvdbackup -M
This action creates a valid DVD-Video structure that can be burned to a
DVD-/+R(W) with help of genisoimage.
To backup the main feature of the DVD:
dvdbackup -F
This action creates a valid DVD-Video structure of the feature title
set. Note that this will not result in an image immediately watchable -
you will need another program like dvdauthor to help construct the IFO
files.
dvdbackup defaults to get the 16:9 version of the main feature if a 4:3
is also present on the DVD. To get the 4:3 version use -a 0.
dvdbackup makes it best to make a intelligent guess what is the main
feature of the DVD - in case it fails please send a bug report.
To backup a title set
dvdbackup -T 2
where "-T 2" specifies that you want to backup title set 2 i.e. all
VTS_02_X.XXX files.
This action creates a valid DVD-Video structure of the specified title
set. Note that this will not result in an image immediately watchable -
you will need another program like dvdauthor to help construct the IFO
files.
To backup a title:
dvdbackup -t 1
This action backups all cells that forms the specified title. Note that
there can be sector gaps in between one cell and an other. dvdbackup
will backup all sectors that belongs to the title but will skip sectors
that are not a part of the title.
To backup a specific chapter or chapters from a title:
dvdbackup -t 1 -s 20 -e 25
This action will backup chapter 20 to 25 in title 1, as with the backup
of a title there can be sector gaps between one chapter (cell) and an
other. dvdbackup will backup all sectors that belongs to the title 1
chapter 20 to 25 but will skip sectors that are not a part of the
title 1 chapter 20 to 25.
To backup a single chapter e.g. chapter 20 do -s 20 -e 20.
To backup from chapter 20 to the end chapter use only -s 20.
To backup to chapter 20 from the first chapter use only -e 20.
You can skip the -t switch and let the program guess the title although
it is not recommended.
If you specify a chapter that his higher than the last chapter of the
title dvdbackup will truncate to the highest chapter of the title.
Return values:
0 on success
1 on usage error
2 on title name error
-1 on failure
Todo - i.e. what's on the agenda.
Make the main feature guessing algorithm better. Not that it doesn't do
it's job, but it's implementation isn't that great. I would also like
to preserve more information about the main feature since that would
let me perform better implementations in other functions that depends
on the titles_info_t and title_set_info_t structures.
Make it possible to extract cells in a title not just chapters (very
easy so it will definitely be in the next version).
Make a split mirror (-S) option that divides a DVD-9 to two valid DVD-5
video structures. This is not a trivial hack and it's my main goal
the next month or so. It involves writing ifoedit and vobedit
libraries in order to be able to manipulate both the IFO structures
and the VOB files. Out of this will most probably also come tscreate
and vtscreate which will enable you to make a very simple DVD-Video
from MPEG-1/2 source.
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