blog/data/2017-11-18-verk-i-det-fri-filmer.txt

   1 Title: Legal to share more than 3000 movies listed on IMDB?
   2 Tags: english, opphavsrett, verkidetfri
   3 Date: 2017-11-18 21:20
   4
   5 <p>A month ago, I blogged about my work to
   6 <a href="http://people.skolelinux.org/pere/blog/Locating_IMDB_IDs_of_movies_in_the_Internet_Archive_using_Wikidata.html">automatically
   7 check the copyright status of IMDB entries</a>, and try to count the
   8 number of movies listed in IMDB that is legal to distribute on the
   9 Internet.  I have continued to look for good data sources, and
  10 identified a few more.  The code used to extract information from
  11 various data sources is available in
  12 <a href="https://github.com/petterreinholdtsen/public-domain-free-imdb">a
  13 git repository</a>, currently available from github.</p>
  14
  15 <p>So far I have identified 3186 unique IMDB title IDs.  To gain
  16 better understanding of the structure of the data set, I created a
  17 histogram of the year associated with each movie (typically release
  18 year).  It is interesting to notice where the peaks and dips in the
  19 graph are located.  I wonder why they are placed there.  I suspect
  20 World War II caused the dip around 1940, but what caused the peak
  21 around 2010?</p>
  22
  23 <p align="center"><img src="http://people.skolelinux.org/pere/blog/images/2017-11-18-verk-i-det-fri-filmer.png" /></p>
  24
  25 <p>I've so far identified ten sources for IMDB title IDs for movies in
  26 the public domain or with a free license.  This is the statistics
  27 reported when running 'make stats' in the git repository:</p>
  28
  29 <pre>
  30   249 entries (    6 unique) with and   288 without IMDB title ID in free-movies-archive-org-butter.json
  31  2301 entries (  540 unique) with and     0 without IMDB title ID in free-movies-archive-org-wikidata.json
  32   830 entries (   29 unique) with and     0 without IMDB title ID in free-movies-icheckmovies-archive-mochard.json
  33  2109 entries (  377 unique) with and     0 without IMDB title ID in free-movies-imdb-pd.json
  34   291 entries (  122 unique) with and     0 without IMDB title ID in free-movies-letterboxd-pd.json
  35   144 entries (  135 unique) with and     0 without IMDB title ID in free-movies-manual.json
  36   350 entries (    1 unique) with and   801 without IMDB title ID in free-movies-publicdomainmovies.json
  37     4 entries (    0 unique) with and   124 without IMDB title ID in free-movies-publicdomainreview.json
  38   698 entries (  119 unique) with and   118 without IMDB title ID in free-movies-publicdomaintorrents.json
  39     8 entries (    8 unique) with and   196 without IMDB title ID in free-movies-vodo.json
  40  3186 unique IMDB title IDs in total
  41 </pre>
  42
  43 <p>The entries without IMDB title ID are candidates to increase the
  44 data set, but might equally well be duplicates of entries already
  45 listed with IMDB title ID in one of the other sources, or represent
  46 movies that lack a IMDB title ID.  I've seen examples of all these
  47 situations when peeking at the entries without IMDB title ID.  Based
  48 on these data sources, the lower bound for movies listed in IMDB that
  49 are legal to distribute on the Internet is between 3186 and 4713.
  50
  51 <p>It would be great for improving the accuracy of this measurement,
  52 if the various sources added IMDB title ID to their metadata.  I have
  53 tried to reach the people behind the various sources to ask if they
  54 are interested in doing this, without any replies so far.  Perhaps you
  55 can help me get in touch with the people behind VODO, Public Domain
  56 Torrents, Public Domain Movies and Public Domain Review to try to
  57 convince them to add more metadata to their movie entries?</p>
  58
  59 <p>Another way you could help is by adding pages to Wikipedia about
  60 movies that are legal to distribute on the Internet.  If such page
  61 exist and include a link to both IMDB and The Internet Archive, the
  62 script used to generate free-movies-archive-org-wikidata.json should
  63 pick up the mapping as soon as wikidata is updates.</p>
  64
  65 <p>As usual, if you use Bitcoin and want to show your support of my
  66 activities, please send Bitcoin donations to my address
  67 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>