1 .. MediaGoblin Documentation
3 Written in 2011, 2012, 2014 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-gst0.10 \
83 gstreamer0.10-plugins-base \
84 gstreamer0.10-plugins-bad \
85 gstreamer0.10-plugins-good \
86 gstreamer0.10-plugins-ugly \
90 Add ``[[mediagoblin.media_types.video]]`` under the ``[plugins]`` section in
91 your ``mediagoblin_local.ini`` and restart MediaGoblin.
99 Now you should be able to submit videos, and mediagoblin should
104 You almost certainly want to separate Celery from the normal
105 paste process or your users will probably find that their connections
106 time out as the video transcodes. To set that up, check out the
107 ":doc:`production-deployments`" section of this manual.
113 To enable audio, install the gstreamer and python-gstreamer bindings (as well
114 as whatever gstreamer plugins you want, good/bad/ugly), scipy and numpy are
115 also needed for the audio spectrograms.
116 To install these on Debianoid systems, run::
118 sudo apt-get install python-gst0.10 gstreamer0.10-plugins-{base,bad,good,ugly} \
119 gstreamer0.10-ffmpeg python-numpy python-scipy
121 The ``scikits.audiolab`` package you will install in the next step depends on the
122 ``libsndfile1-dev`` package, so we should install it.
123 On Debianoid systems, run
127 sudo apt-get install libsndfile1-dev
130 scikits.audiolab will display a warning every time it's imported if you do
131 not compile it with alsa support. Alsa support is not necessary for the GNU
132 MediaGoblin application but if you do not wish the alsa warnings from
133 audiolab you should also install ``libasound2-dev`` before installing
136 Then install ``scikits.audiolab`` for the spectrograms::
138 ./bin/pip install scikits.audiolab
140 Add ``[[mediagoblin.media_types.audio]]`` under the ``[plugins]`` section in your
141 ``mediagoblin_local.ini`` and restart MediaGoblin.
149 You should now be able to upload and listen to audio files!
155 To enable raw image you need to install pyexiv2. On Debianoid systems
159 sudo apt-get install python-pyexiv2
161 Add ``[[mediagoblin.media_types.raw_image]]`` under the ``[plugins]``
162 section in your ``mediagoblin_local.ini`` and restart MediaGoblin.
170 Now you should be able to submit raw images, and mediagoblin should
171 extract the JPEG preview from them.
177 To enable ascii art support, first install the
178 `chardet <http://pypi.python.org/pypi/chardet>`_
179 library, which is necessary for creating thumbnails of ascii art
183 ./bin/easy_install chardet
186 Next, modify (and possibly copy over from ``mediagoblin.ini``) your
187 ``mediagoblin_local.ini``. In the ``[plugins]`` section, add
188 ``[[mediagoblin.media_types.ascii]]``.
196 Now any .txt file you uploaded will be processed as ascii art!
199 STL / 3d model support
200 ======================
202 To enable the "STL" 3d model support plugin, first make sure you have
203 a recentish `Blender <http://blender.org>`_ installed and available on
204 your execution path. This feature has been tested with Blender 2.63.
205 It may work on some earlier versions, but that is not guaranteed (and
206 is surely not to work prior to Blender 2.5X).
208 Add ``[[mediagoblin.media_types.stl]]`` under the ``[plugins]`` section in your
209 ``mediagoblin_local.ini`` and restart MediaGoblin.
217 You should now be able to upload .obj and .stl files and MediaGoblin
218 will be able to present them to your wide audience of admirers!
223 To enable the "PDF and Document" support plugin, you need:
225 1. pdftocairo and pdfinfo for pdf only support.
227 2. unoconv with headless support to support converting libreoffice supported
228 documents as well, such as doc/ppt/xls/odf/odg/odp and more.
229 For the full list see mediagoblin/media_types/pdf/processing.py,
232 All executables must be on your execution path.
234 To install this on Fedora:
238 sudo yum install -y poppler-utils unoconv libreoffice-headless
240 Note: You can leave out unoconv and libreoffice-headless if you want only pdf
241 support. This will result in a much smaller list of dependencies.
243 pdf.js relies on git submodules, so be sure you have fetched them:
250 This feature has been tested on Fedora with:
251 poppler-utils-0.20.2-9.fc18.x86_64
252 unoconv-0.5-2.fc18.noarch
253 libreoffice-headless-3.6.5.2-8.fc18.x86_64
255 It may work on some earlier versions, but that is not guaranteed.
257 Add ``[[mediagoblin.media_types.pdf]]`` under the ``[plugins]`` section in your
258 ``mediagoblin_local.ini`` and restart MediaGoblin.
267 Blog (HIGHLY EXPERIMENTAL)
268 ==========================
270 MediaGoblin has a blog media type, which you might notice by looking
271 through the docs! However, it is *highly experimental*. We have not
272 security reviewed this, and it acts in a way that is not like normal
273 blogs (the blogposts are themselves media types!).
275 So you can play with this, but it is not necessarily recommended yet
276 for production use! :)