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PostPosted: Tue Nov 14, 2017 6:45 pm 
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Joined: Tue Nov 14, 2017 6:22 pm
Posts: 3
Hello everybody.
By trying to extract an erroneous DVD does not lead anywhere when using the GUI in my special case. Makemkv tries to read the whole disc and failes to open it with the error message:

Quote:
Fehler 'SCSI-Fehler - HARDWARE ERROR:TRACK FOLLOWING ERROR' trat auf während des Auslesens von '/VIDEO_TS/VTS_01_1.VOB' bei Offset '32768'


The first titles from #1 to #9 seem to work. Title #1 has a length of 2.5 hours - this is the title I want to extract on hard disc.

Apparently, makemkv can not focus on title #1 alone, when there is some error in some other title of the disc.

So I tried to extract only this one title via command line [MakeMKV v1.10.7 linux(x64-release)]:
Code:
makemkvcon mkv --minlength=10 dev:/dev/sr0 1 ~/test


Also with this command makemkv checks for everything else left on the disc and gives out error messages. Luckily title01.mkv will be created - unluckily the file is only a couple of MBytes big and not what I wanted.

When I play the DVD with VLC the movie can be watched without any problems. The disc works (at least the parts that are needed for the movie) - how can access it with makemkv? Is there a way to find out which title is the needed one?

By using:
Code:
makemkvcon mkv --minlength=10 dev:/dev/sr0 all ~/test


makemkv extracts title00.mkv to title07.mkv and then stopps.

I appreciate any help or ideas.
Thanks, regards, Jo.


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PostPosted: Wed Nov 15, 2017 12:24 am 
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Joined: Tue Nov 14, 2017 6:22 pm
Posts: 3
Hello everybody.
It turns outs that the movie has one broken cell somewhere in the middle. VLC can start the movie and jump to the end so it looks like, everything is fine - in fact it is not.
That explaines, why makemkv cannot work.

Probably some administartor can move this thread out of here?

Sorry for the inconvenience, Jo.


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PostPosted: Wed Nov 15, 2017 1:09 am 
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Joined: Sun Jul 24, 2011 11:21 pm
Posts: 4549
Actually, you might want to submit the information to Mike that is asked for in the FAQ link in my signature - there MAY be something that can be done about it... If Mike thinks it can be worked around, he may ask you for additional information.

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How to aid in finding the answer to your problem: http://www.makemkv.com/faq/item/8


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PostPosted: Sat Nov 18, 2017 12:17 am 
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Joined: Wed Nov 26, 2008 2:26 am
Posts: 3318
This is exactly what manual DVD mode is for, please see https://www.makemkv.com/manualdvd/

You will have to figure the title ID and cell IDs. For example, if title id is 12, first cell id is 1, last cell id is 33 and broken cell id is 22, the title selection string would be:

Code:
12:@1-@21,@23-@33


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PostPosted: Sat Nov 18, 2017 9:38 am 
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Joined: Tue Nov 14, 2017 6:22 pm
Posts: 3
Hi Mike.

Thanks for the answer.
I used the manual DVD mode and found out, that title 1 cell 17 is broken. I understand, that I can make an mkv file of the movie without cell 17 - so I come up with a movie with some missing minutes somewhere in the middle of it. The whole cell 17 would be missing.

Is it possible to access parts of cell 17? VLC plays the first 2 minutes of cell 17 until it hangs. Probably there is a way to make an mkv file that misses only a fraction of a second? In manual mode I can only access whole titles, right? Or can I break it down to shorter fractions?

Thanks again.
Jo.


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