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ripping_dvds [2013/08/01 10:12]
beandog created 		ripping_dvds [2018/03/27 23:56] (current)
beandog [Extracting Image / Cloning DVD Filesystem / Ripping a DVD to an ISO]
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   * [[vobcopy]]   * [[vobcopy]]
  
 +**For the impatient:​** Read my notes on [[HandBrake]] if you're interested in ripping in the traditional format: ripping the content and encoding it to an MP4.
 ==== Contextual Notes ==== ==== Contextual Notes ====
  
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 The reason I focus mainly on copying the content is because I like to archive my discs. ​ They are going to run generally from 4 to 8 GB in size.  Storage is cheap, but that's not the main reason I rip mine -- it's so that I can access *all* of the content whenever I want.  I don't have to go back and grab the disc. The reason I focus mainly on copying the content is because I like to archive my discs. ​ They are going to run generally from 4 to 8 GB in size.  Storage is cheap, but that's not the main reason I rip mine -- it's so that I can access *all* of the content whenever I want.  I don't have to go back and grab the disc.
 +
 +==== Filesystem ====
 +
 +The file extension ''​.iso''​ has also become associated with a DVD rip, or really any image of any DVD or CD.  It's a misnomer, since for video DVDs, the filesystem format is UDF.  I'm not a fussbudget when it comes to using correct terminology,​ though, so I'm not going to be anal about it. :)  I use the .iso extension exclusively. ​ The only reason for pointing out that the file format is UDF is that it is important when trying to mount an ISO.
 +
 +==== Terminology ====
 +
 +When I refer to "an ISO" in my notes, I am always using that term to describe a DVD that has been cloned from the physical media to the hard drive as a single file.
 +
 +Using the term "​extracting an image" is more close to what I'm doing when I rip, so I may sometimes use that phrase, too. :)
 +
 +==== Extracting Image / Cloning DVD Filesystem / Ripping a DVD to an ISO ====
 +
 +The best way to rip to an ISO is to copy the entire contents of the disc.  For that, I use dd with [[pv]] or [[ddrescue]].
 +
 +There are other ways to copy the DVD, such as [[vobcopy]],​ but these programs are designed to rip parts of the DVD or to mirror the filesystem another way.  Don't take that note as an implication of inferiority. ​ The tools are great, but in my circumstance,​ does not always achieve what I want to do.
 +
 +I mostly use [[ddrescue]] to rip a DVD. Here's a sample syntax:
 +
 +<​code>​
 +ddrescue -b 2048 -n /dev/dvd dvd.iso
 +</​code>​
 +
 +Simple as that. Once the ISO is ripped, you can access it just as you would a DVD drive:
 +
 +Examples:
 +
 +<​code>​
 +lsdvd dvd.iso
 +mplayer dvd:// -dvd-drive dvd.iso
 +HandBrakeCLI -i dvd.iso
 +</​code>​
 +
 +And so on ...
 +
 +It may be worth noting (or not) that because I rip the content this way, all of the CSS encryption is also intact.
 +
 +There are other ways to get the content. ​ Since everything in Linux is just a file, you can dump the content to a file easily enough using ''​cat'':​
 +
 +<​code>​
 +cat /dev/dvd > dvd.iso
 +</​code>​
 +
 +I really, really, really don't recommend using ''​cat''​ since it's ugly. There are cleaner and safer ways to copy it. If you really don't want to install anything on your box, use ''​dd''​. I think even busybox ships with a copy of it.
 +==== Mounting a DVD Image ====
 +
 +For one reason or another, you may want to mount the image file directly. ​ This is where the focus on the proper filesystem comes into play.  You mount it as a UDF filesystem, not as an ISO 9660 filesystem (CDs).
 +
 +Mount a DVD image to ''/​mnt/​dvd'':​
 +
 +<​code>​
 +mount -t udf -o ro dvd.iso /mnt/dvd
 +</​code>​

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