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[homepage.git] / blog / archive / 2014 / 03 / 03.rss

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                 <link>http://people.skolelinux.org/pere/blog/</link>
 
        
+       <item>
+               <title>Video DVD reader library / python-dvdvideo - nice free software</title>
+               <link>http://people.skolelinux.org/pere/blog/Video_DVD_reader_library___python_dvdvideo___nice_free_software.html</link>        
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Video_DVD_reader_library___python_dvdvideo___nice_free_software.html</guid>
+                <pubDate>Fri, 21 Mar 2014 15:25:00 +0100</pubDate>
+               <description>&lt;p&gt;Keeping your DVD collection safe from scratches and curious
+children fingers while still having it available when you want to see a
+movie is not straight forward.  My preferred method at the moment is
+to store a full copy of the ISO on a hard drive, and use VLC, Popcorn
+Hour or other useful players to view the resulting file.  This way the
+subtitles and bonus material are still available and using the ISO is
+just like inserting the original DVD record in the DVD player.&lt;/p&gt;
+
+&lt;p&gt;Earlier I used dd for taking security copies, but it do not handle
+DVDs giving read errors (which are quite a few of them).  I&#39;ve also
+tried using
+&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Ripping_problematic_DVDs_using_dvdbackup_and_genisoimage.html&quot;&gt;dvdbackup
+and genisoimage&lt;/a&gt;, but these days I use the marvellous python library
+and program
+&lt;a href=&quot;http://bblank.thinkmo.de/blog/new-software-python-dvdvideo&quot;&gt;python-dvdvideo&lt;/a&gt;
+written by Bastian Blank.  It is
+&lt;a href&quot;http://packages.qa.debian.org/p/python-dvdvideo.html&quot;&gt;in Debian
+already&lt;/a&gt; and the binary package name is python3-dvdvideo. Instead
+of trying to read every block from the DVD, it parses the file
+structure and figure out which block on the DVD is actually in used,
+and only read those blocks from the DVD.  This work surprisingly well,
+and I have been able to almost backup my entire DVD collection using
+this method.&lt;/p&gt; So far, python-dvdvideo have failed on between 10 and
+20 DVDs, which is a small fraction of my collection.  The most common
+problem is
+&lt;a href=&quot;https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=720831&quot;&gt;DVDs
+using UTF-16 instead of UTF-8 characters&lt;/a&gt;, which according to
+Bastian is against the DVD specification (and seem to cause some
+players to fail too).  A rarer problem is what seem to be inconsistent
+DVD structures, as the python library
+&lt;a href=&quot;https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=723079&quot;&gt;claim
+there is a overlap between objects&lt;/a&gt;.  An equally rare problem claim
+&lt;a href=&quot;https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=741878&quot;&gt;some
+value is out of range&lt;/a&gt;.  No idea what is going on there.  I wish I
+knew enough about the DVD format to fix these, to ensure my movie
+collection will stay with me in the future.&lt;/p&gt;
+
+&lt;p&gt;So, if you need to keep your DVDs safe, back them up using
+python-dvdvideo. :)&lt;/p&gt;
+</description>
+       </item>
+       
        <item>
                <title>Norsk utgave av Alaveteli / WhatDoTheyKnow på trappene</title>
                <link>http://people.skolelinux.org/pere/blog/Norsk_utgave_av_Alaveteli___WhatDoTheyKnow_p__trappene.html</link>