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 Forum index » Advanced Topics » Additional Software (PETs, n' stuff) » Multimedia
Use Dvdisaster to resurrect a bad DVD disc
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don570


Joined: 10 Mar 2010
Posts: 3289
Location: Ontario

PostPosted: Tue 24 Jan 2012, 15:50    Post_subject:  Use Dvdisaster to resurrect a bad DVD disc  

Use Dvdisaster to resurrect a bad DVD disc.
Normally it is used for scratch protection of a CD or DVD.

But in this post I explain how to resurrect old TV shows that
have been recorded. In my case the DVD recorder is defective
and sometimes makes a DVD that can't be closed properly.

Pemasu has a specially compiled version of dvdisaster available here,

http://smokey01.com/pemasu/pet_packages-exprimo/

However the debian version should work as well for Lucid Puppy

https://launchpad.net/ubuntu/+source/dvdisaster

pemasu's Exprimo was able to use the debian version as well.

Here are the instructions to save the TV shows that you have
recorded on a DVD using a DVD recorder.

Make enough space in a partition ---> at least 10 GB is needed
for a one sided DVD.

In that partition create a folder named 'tempdvd' for the ISO that you
will create and two empty work folders, inside of 'tempdvd',
called tmp1 and tmp2. Here's what it will look like.




Insert your bad DVD

Launch Dvdisaster ---> This is opening screen



You fill in the path to the ISO that will be created.
For example /mnt/sda5/tempdvd/BAD.iso

Here is the result on my computer screen..





Click 'Read' button

In window that pops up
Click "Skip RS02 test". The creation of the ISO will start.
Be patient. It will take maybe 15 minutes.

There is a visual indication of the reading of the tracks.
Once the program reaches the outer rings of the DVD it will slow down.
You can then click 'Stop'. You have now created an ISO in
the folder 'tempdvd'.

Check its size and it will probably be around 4 GB.

Open a terminal window and cd into the tempdvd directory. Type the command....

Code:
split -a6 -b1048576 -d filename.iso dvd


replacing the "filename" with your actual file name which in my
example is 'BAD'.

It should take only a couple of minutes to execute in the console.

After this operation you can now delete your ISO file to save space.

You have now created a large number of tiny video files lasting
a few seconds each . This makes it easy to do editing.
The few non-video files indicate where you have stopped
a TV show recording or perhaps where some damage
exists on the DVD disc.


You should now drag the files that represent your first TV show
that you recorded into the work directory 'tmp1'.
They must not be damaged. Copying a damaged file
just causes problems in the playback.

You should do a change directory command into the folder tmp1
and then do the command

Code:
cat dvd* > video.mpg


This joins the tiny video files together into a TV show.

Drag this video file to tmp2 and delete the files in tmp1 so it is
empty again, ready to create a second TV show.

You continue to create TV shows until you have all the desired
video off the bad DVD disc.

Tip: Do not use ffmpeg to resize the video frames. For one thing
it takes a long time and second, it results in disappointing video.
Third it destroys the captions (if that is important).

Your TV shows are in the form of mpeg video files .
You can burn them again to DVD if have a proper DVD
burn program. I've used Ubuntu's Brassero program
or puppy's pburn.

I describe a burn of TV show HERE

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musher0


Joined: 04 Jan 2009
Posts: 4238
Location: Gatineau (Qc), Canada

PostPosted: Sun 01 Apr 2012, 16:16    Post_subject:  

Thanks, don, for this little tutorial.
Might come in handy at some point.
BFN.

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