How come some dvds can not be ripped?

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GNUbahn
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Joined: 02/18/2016

I am facing a couple of dvds that just won't rip. I can play it and vlc gladly tells the title, which can be de decoded by handbrake. Only to stop after a short while. Vlc as well gives up on ripping.

The problem is probably related to the title changing every time the dvd is played. It seems that some how the dvd tricks the player to think is playing another track/title than is actually the case.

I have searched but the closed I get is the 99-title problem.

J.B. Nicholson-Owens
Desconectado
Joined: 06/09/2014

name at domain wrote:
> I am facing a couple of dvds that just won't rip. I can play it and vlc
> gladly tells the title, which can be de decoded by handbrake.

It's possible the DVD has some form of copy prevention on it. I've seen
very few DVDs with copy prevention: Star Trek Animated series collection
DVD and "Wal-Mart: The High Cost of Low Prices" DVD, which put me off
purchasing either since I'm not into DRM.

Here's something to try that may work: Try putting the DVD in, playing it
with VLC, and then stopping playing the DVD, quitting VLC, and copying the
DVD to an ISO image file with dd or a dd compatible program using the
command line:

$ dd if=/dev/dvd of=myDVDimage.iso

Then eject the DVD and list chapters with lsdvd, extract chapters with
mplayer (or a compatible workalike), extracting subtitles to text with
ccextractor, and muxing together each chapter, textual subtitles, and
whatever else you like into Matroska files with the mkvtoolnix programs.
All of these programs are in Debian main (and mkvtoolnix programs also have
their own repo which you can look up).

I'm not sure why playing the DVD (even a little) is necessary, but it seems
to help.