Converting DVD files to MKV

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Tunetyme
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Joined: Tue Dec 27, 2011 2:58 pm

Converting DVD files to MKV

#1 Post by Tunetyme » Fri Jan 06, 2012 3:44 pm

I have been ripping my DVD's for a long time. I have hundreds of IFO movies. If I can suggest a few enhancements to converting from existing files.

A batch mode would be great where I could select numerous folders for conversion. With that the MKV file should be placed in the same directory as the IFO and use the folder name as the MKV file name. This should be the default setting. Deleting the other files after it finishes would be a plus as well (this should be optional).

All in all this is a quick conversion. Have you considered adding some compression capability as well?

Tunetyme

setarip_old
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Joined: Wed Dec 09, 2009 1:31 pm

Re: Converting DVD files to MKV

#2 Post by setarip_old » Fri Jan 06, 2012 7:47 pm

Hi!
Have you considered adding some compression capability as well?

That would be directly contrary to the stated purpose of MakeMKV (To create an MKV package without altering the original primary streams)...

Tunetyme
Posts: 7
Joined: Tue Dec 27, 2011 2:58 pm

Re: Converting DVD files to MKV

#3 Post by Tunetyme » Sun Jan 08, 2012 8:06 pm

One can have compression without losing data. A good example is a zip file or for audio flac or APE files. Compression can be loss-less. I am not suggesting an AVI type of compression where data is lost.

Romansh
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Re: Converting DVD files to MKV

#4 Post by Romansh » Sun Jan 08, 2012 8:29 pm

DVD and Blu-ray video are already lossily compressed (MPEG-2, VC-1 or H.264). Lossless compression would make the files larger, not smaller.

Same applies to DVD audio (AC3, DTS). And while Blu-ray audio doesn't always use lossy compression, FLAC isn't always more efficient than DTS-HD or TrueHD - and even when it is, it's not by much compared to the overall size of the MKV file.

Tunetyme
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Joined: Tue Dec 27, 2011 2:58 pm

Re: Converting DVD files to MKV

#5 Post by Tunetyme » Mon Jan 09, 2012 6:13 pm

I think you misunderstand my question. My point is that compression does not have to be lossy, I used the audio comparison of Flac and APE as examples that are absolutely bit perfect and they can reduce the file size by 40-50%. You can reproduce the original CD from a Flac or APE file. I am only suggesting that it may be feasible with video files as well.

The reason for the question is with the cost of hard drives more than doubling the last couple of months it would be nice to be able to get more on a disc drive.

Tunetyme

DaveQ
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Joined: Sat Sep 24, 2011 1:46 pm

Re: Converting DVD files to MKV

#6 Post by DaveQ » Mon Jan 09, 2012 6:43 pm

Tunetyme wrote:I think you misunderstand my question. My point is that compression does not have to be lossy, I used the audio comparison of Flac and APE as examples that are absolutely bit perfect and they can reduce the file size by 40-50%. You can reproduce the original CD from a Flac or APE file. I am only suggesting that it may be feasible with video files as well.
You are misunderstanding the answer that Romansh gave. You are correct that compression does not have to be lossy -- IN PARTICULAR, if you are compressing an UNCOMPRESSED source file, it is possible in some cases to compress it in a non-lossy way. CD quality audio is one example.

HOWEVER, the video on a Blu-ray disc IS ALREADY COMPRESSED. Furthermore, that compression is already a lossy form of compression. It is MUCH SMALLER on disc than it would be if it were uncompressed, and it is smaller than it would be if a non-lossy compression method were used instead. In other words, Blu-ray video is ALREADY as small as it can be made, with (subjectively) acceptable loss of quality. It can't be further compressed in a non-lossy way.

The same is true of DTS and Dolby Digital soundtracks - they are lossy formats, employing lossy compression. Dolby TrueHD and DTS-MA are lossless formats which have been losslessly compressed already.

If you wish to reduce file sizes on your hard drives, make use of Handbrake, which is extremely good at reducing file sizes with REASONABLE (i.e., as close to unnoticeable as possible) reduction in picture and/or audio quality. It's adjustable, so you can pick a trade-off between file size and quality.

Dave

Tunetyme
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Joined: Tue Dec 27, 2011 2:58 pm

Re: Converting DVD files to MKV

#7 Post by Tunetyme » Sun Feb 05, 2012 8:01 pm

Point taken.

The primary request in this thread was regarding a batch mode:

"A batch mode would be great where I could select numerous folders for conversion. With that the MKV file should be placed in the same directory as the IFO and use the folder name as the MKV file name. This should be the default setting. Deleting the other files after it finishes would be a plus as well (this should be optional)."

Is this possible?

Tunetyme

Chetwood
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Joined: Mon Aug 30, 2010 9:16 am

Re: Converting DVD files to MKV

#8 Post by Chetwood » Sat Feb 11, 2012 7:01 am

Tunetyme wrote:The primary request in this thread was regarding a batch mode:
What did your search for 'batch' turn up?
MultiMakeMKV: MakeMKV batch processing (Win)
MultiShrink: DVD Shrink batch processing
Offizieller Uebersetzer von DVD Shrink deutsch

Tunetyme
Posts: 7
Joined: Tue Dec 27, 2011 2:58 pm

Re: Converting DVD files to MKV

#9 Post by Tunetyme » Mon Feb 13, 2012 1:38 pm

My search did not turn up anything that is useful.

mike admin
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Re: Converting DVD files to MKV

#10 Post by mike admin » Tue Feb 14, 2012 1:46 pm

Did you try command-line version, http://www.makemkv.com/developers/usage.txt ?

Chetwood
Posts: 997
Joined: Mon Aug 30, 2010 9:16 am

Re: Converting DVD files to MKV

#11 Post by Chetwood » Wed Feb 15, 2012 6:32 am

Tunetyme wrote:My search did not turn up anything that is useful.
Mine turned up BatchMakeMKV and MakeMKV All. I'm also about to finish adapting MultiShrink to MakeMKV but it won't do in your case since I open all discs in advance to make sure what streams to use.

Done: check out MultiMakeMKV.
MultiMakeMKV: MakeMKV batch processing (Win)
MultiShrink: DVD Shrink batch processing
Offizieller Uebersetzer von DVD Shrink deutsch

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