1 .. MediaGoblin Documentation
3 Written in 2011, 2012, 2014, 2015 by MediaGoblin contributors
5 To the extent possible under law, the author(s) have dedicated all
6 copyright and related and neighboring rights to this software to
7 the public domain worldwide. This software is distributed without
10 You should have received a copy of the CC0 Public Domain
11 Dedication along with this software. If not, see
12 <http://creativecommons.org/publicdomain/zero/1.0/>.
14 .. _media-types-chapter:
20 In the future, there will be all sorts of media types you can enable,
21 but in the meanwhile there are six additional media types: video, audio,
22 raw image, ascii art, STL/3d models, PDF and Document.
24 First, you should probably read ":doc:`configuration`" to make sure
25 you know how to modify the mediagoblin config file.
31 Media types are now plugins
33 Media types are enabled in your mediagoblin configuration file, typically it is
34 created by copying ``mediagoblin.ini`` to ``mediagoblin_local.ini`` and then
35 applying your changes to ``mediagoblin_local.ini``. If you don't already have a
36 ``mediagoblin_local.ini``, create one in the way described.
38 Most media types have additional dependencies that you will have to install.
39 You will find descriptions on how to satisfy the requirements of each media type
42 To enable a media type, add the the media type under the ``[plugins]`` section
43 in you ``mediagoblin_local.ini``. For example, if your system supported image
44 and video media types, then it would look like this::
47 [[mediagoblin.media_types.image]]
48 [[mediagoblin.media_types.video]]
50 Note that after enabling new media types, you must run dbupdate like so::
54 If you are running an active site, depending on your server
55 configuration, you may need to stop it first (and it's certainly a
56 good idea to restart it after the update).
59 How does MediaGoblin decide which media type to use for a file?
60 ===============================================================
62 MediaGoblin has two methods for finding the right media type for an uploaded
63 file. One is based on the file extension of the uploaded file; every media type
64 maintains a list of supported file extensions. The second is based on a sniffing
65 handler, where every media type may inspect the uploaded file and tell if it
68 The file-extension-based approach is used before the sniffing-based approach,
69 if the file-extension-based approach finds a match, the sniffing-based approach
70 will be skipped as it uses far more processing power.
76 To enable video, first install gstreamer and the python-gstreamer
77 bindings (as well as whatever gstremaer extensions you want,
78 good/bad/ugly). On Debianoid systems
82 sudo apt-get install python-gi python3-gi \
84 gir1.2-gstreamer-1.0 \
85 gir1.2-gst-plugins-base-1.0 \
86 gstreamer1.0-plugins-good \
87 gstreamer1.0-plugins-ugly \
88 gstreamer1.0-plugins-bad \
93 Add ``[[mediagoblin.media_types.video]]`` under the ``[plugins]`` section in
94 your ``mediagoblin_local.ini`` and restart MediaGoblin.
102 Now you should be able to submit videos, and mediagoblin should
107 You almost certainly want to separate Celery from the normal
108 paste process or your users will probably find that their connections
109 time out as the video transcodes. To set that up, check out the
110 ":doc:`production-deployments`" section of this manual.
116 To enable audio, install the gstreamer and python-gstreamer bindings (as well
117 as whatever gstreamer plugins you want, good/bad/ugly), scipy and numpy are
118 also needed for the audio spectrograms.
119 To install these on Debianoid systems, run::
121 sudo apt-get install python-gst-1.0 gstreamer1.0-plugins-{base,bad,good,ugly} \
122 gstreamer1.0-libav python-numpy python-scipy libsndfile1-dev libasound2-dev
125 scikits.audiolab will display a warning every time it's imported if you do
126 not compile it with alsa support. Alsa support is not necessary for the GNU
127 MediaGoblin application.
129 Then install ``scikits.audiolab`` for the spectrograms::
131 ./bin/pip install scikits.audiolab
133 Add ``[[mediagoblin.media_types.audio]]`` under the ``[plugins]`` section in your
134 ``mediagoblin_local.ini`` and restart MediaGoblin.
142 You should now be able to upload and listen to audio files!
148 To enable raw image you need to install pyexiv2. On Debianoid systems
152 sudo apt-get install python-pyexiv2
154 Add ``[[mediagoblin.media_types.raw_image]]`` under the ``[plugins]``
155 section in your ``mediagoblin_local.ini`` and restart MediaGoblin.
163 Now you should be able to submit raw images, and mediagoblin should
164 extract the JPEG preview from them.
170 To enable ascii art support, first install the
171 `chardet <http://pypi.python.org/pypi/chardet>`_
172 library, which is necessary for creating thumbnails of ascii art
176 ./bin/easy_install chardet
179 Next, modify (and possibly copy over from ``mediagoblin.ini``) your
180 ``mediagoblin_local.ini``. In the ``[plugins]`` section, add
181 ``[[mediagoblin.media_types.ascii]]``.
189 Now any .txt file you uploaded will be processed as ascii art!
192 STL / 3d model support
193 ======================
195 To enable the "STL" 3d model support plugin, first make sure you have
196 a recentish `Blender <http://blender.org>`_ installed and available on
197 your execution path. This feature has been tested with Blender 2.63.
198 It may work on some earlier versions, but that is not guaranteed (and
199 is surely not to work prior to Blender 2.5X).
201 Add ``[[mediagoblin.media_types.stl]]`` under the ``[plugins]`` section in your
202 ``mediagoblin_local.ini`` and restart MediaGoblin.
210 You should now be able to upload .obj and .stl files and MediaGoblin
211 will be able to present them to your wide audience of admirers!
216 To enable the "PDF and Document" support plugin, you need:
218 1. pdftocairo and pdfinfo for pdf only support.
220 2. unoconv with headless support to support converting libreoffice supported
221 documents as well, such as doc/ppt/xls/odf/odg/odp and more.
222 For the full list see mediagoblin/media_types/pdf/processing.py,
225 All executables must be on your execution path.
227 To install this on Fedora:
231 sudo yum install -y poppler-utils unoconv libreoffice-headless
233 Note: You can leave out unoconv and libreoffice-headless if you want only pdf
234 support. This will result in a much smaller list of dependencies.
236 pdf.js relies on git submodules, so be sure you have fetched them:
243 This feature has been tested on Fedora with:
244 poppler-utils-0.20.2-9.fc18.x86_64
245 unoconv-0.5-2.fc18.noarch
246 libreoffice-headless-3.6.5.2-8.fc18.x86_64
248 It may work on some earlier versions, but that is not guaranteed.
250 Add ``[[mediagoblin.media_types.pdf]]`` under the ``[plugins]`` section in your
251 ``mediagoblin_local.ini`` and restart MediaGoblin.
260 Blog (HIGHLY EXPERIMENTAL)
261 ==========================
263 MediaGoblin has a blog media type, which you might notice by looking
264 through the docs! However, it is *highly experimental*. We have not
265 security reviewed this, and it acts in a way that is not like normal
266 blogs (the blogposts are themselves media types!).
268 So you can play with this, but it is not necessarily recommended yet
269 for production use! :)