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1 | .. MediaGoblin Documentation |
2 | ||
8af91cea | 3 | Written in 2011, 2012, 2014, 2015 by MediaGoblin contributors |
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4 | |
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 | |
8 | any warranty. | |
9 | ||
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/>. | |
13 | ||
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14 | .. _media-types-chapter: |
15 | ||
16 | ==================== | |
d34757dc | 17 | Media Types |
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18 | ==================== |
19 | ||
20 | In the future, there will be all sorts of media types you can enable, | |
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21 | but in the meanwhile there are six additional media types: video, audio, |
22 | raw image, ascii art, STL/3d models, PDF and Document. | |
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23 | |
24 | First, you should probably read ":doc:`configuration`" to make sure | |
25 | you know how to modify the mediagoblin config file. | |
26 | ||
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27 | Enabling Media Types |
28 | ==================== | |
29 | ||
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30 | .. note:: |
31 | Media types are now plugins | |
32 | ||
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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. | |
37 | ||
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 | |
40 | on this page. | |
41 | ||
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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:: | |
d34757dc | 45 | |
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46 | [plugins] |
47 | [[mediagoblin.media_types.image]] | |
48 | [[mediagoblin.media_types.video]] | |
d34757dc | 49 | |
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50 | Note that after enabling new media types, you must run dbupdate like so:: |
51 | ||
52 | ./bin/gmg dbupdate | |
53 | ||
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). | |
57 | ||
58 | ||
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59 | How does MediaGoblin decide which media type to use for a file? |
60 | =============================================================== | |
61 | ||
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 | |
66 | will accept it. | |
67 | ||
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. | |
71 | ||
72 | ||
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73 | Video |
74 | ===== | |
75 | ||
76 | To enable video, first install gstreamer and the python-gstreamer | |
77 | bindings (as well as whatever gstremaer extensions you want, | |
3a8b18f8 | 78 | good/bad/ugly). On Debianoid systems |
9bc2fc6c | 79 | |
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80 | .. code-block:: bash |
81 | ||
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82 | sudo apt-get install python-gi python3-gi \ |
83 | gstreamer1.0-tools \ | |
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 \ | |
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89 | gstreamer1.0-libav \ |
90 | python-gst-1.0 | |
582958e3 | 91 | |
9bc2fc6c | 92 | |
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93 | Add ``[[mediagoblin.media_types.video]]`` under the ``[plugins]`` section in |
94 | your ``mediagoblin_local.ini`` and restart MediaGoblin. | |
5ef7ab08 | 95 | |
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96 | Run |
97 | ||
98 | .. code-block:: bash | |
3fe3b222 | 99 | |
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100 | ./bin/gmg dbupdate |
101 | ||
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102 | Now you should be able to submit videos, and mediagoblin should |
103 | transcode them. | |
104 | ||
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105 | .. note:: |
106 | ||
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. | |
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111 | |
112 | ||
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113 | Audio |
114 | ===== | |
115 | ||
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:: | |
120 | ||
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121 | sudo apt-get install python-gst-1.0 gstreamer1.0-plugins-{base,bad,good,ugly} \ |
122 | gstreamer1.0-libav python-numpy python-scipy gstreamer1.0-libav \ | |
123 | libsndfile1-dev libasound2-dev | |
d34757dc | 124 | |
34a85313 | 125 | .. note:: |
8518e95e | 126 | scikits.audiolab will display a warning every time it's imported if you do |
34a85313 | 127 | not compile it with alsa support. Alsa support is not necessary for the GNU |
8af91cea | 128 | MediaGoblin application. |
34a85313 | 129 | |
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130 | Then install ``scikits.audiolab`` for the spectrograms:: |
131 | ||
132 | ./bin/pip install scikits.audiolab | |
133 | ||
91bee92e | 134 | Add ``[[mediagoblin.media_types.audio]]`` under the ``[plugins]`` section in your |
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135 | ``mediagoblin_local.ini`` and restart MediaGoblin. |
136 | ||
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137 | Run |
138 | ||
139 | .. code-block:: bash | |
3fe3b222 | 140 | |
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141 | ./bin/gmg dbupdate |
142 | ||
143 | You should now be able to upload and listen to audio files! | |
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144 | |
145 | ||
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146 | Raw image |
147 | ========= | |
148 | ||
149 | To enable raw image you need to install pyexiv2. On Debianoid systems | |
150 | ||
151 | .. code-block:: bash | |
152 | ||
153 | sudo apt-get install python-pyexiv2 | |
154 | ||
155 | Add ``[[mediagoblin.media_types.raw_image]]`` under the ``[plugins]`` | |
156 | section in your ``mediagoblin_local.ini`` and restart MediaGoblin. | |
157 | ||
158 | Run | |
159 | ||
160 | .. code-block:: bash | |
161 | ||
162 | ./bin/gmg dbupdate | |
163 | ||
164 | Now you should be able to submit raw images, and mediagoblin should | |
165 | extract the JPEG preview from them. | |
166 | ||
167 | ||
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168 | Ascii art |
169 | ========= | |
170 | ||
171 | To enable ascii art support, first install the | |
172 | `chardet <http://pypi.python.org/pypi/chardet>`_ | |
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173 | library, which is necessary for creating thumbnails of ascii art |
174 | ||
175 | .. code-block:: bash | |
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176 | |
177 | ./bin/easy_install chardet | |
178 | ||
179 | ||
180 | Next, modify (and possibly copy over from ``mediagoblin.ini``) your | |
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181 | ``mediagoblin_local.ini``. In the ``[plugins]`` section, add |
182 | ``[[mediagoblin.media_types.ascii]]``. | |
efd69313 | 183 | |
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184 | Run |
185 | ||
186 | .. code-block:: bash | |
3fe3b222 | 187 | |
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188 | ./bin/gmg dbupdate |
189 | ||
efd69313 | 190 | Now any .txt file you uploaded will be processed as ascii art! |
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191 | |
192 | ||
193 | STL / 3d model support | |
194 | ====================== | |
195 | ||
196 | To enable the "STL" 3d model support plugin, first make sure you have | |
197 | a recentish `Blender <http://blender.org>`_ installed and available on | |
198 | your execution path. This feature has been tested with Blender 2.63. | |
199 | It may work on some earlier versions, but that is not guaranteed (and | |
200 | is surely not to work prior to Blender 2.5X). | |
201 | ||
91bee92e | 202 | Add ``[[mediagoblin.media_types.stl]]`` under the ``[plugins]`` section in your |
919cd2fd | 203 | ``mediagoblin_local.ini`` and restart MediaGoblin. |
5ef7ab08 | 204 | |
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205 | Run |
206 | ||
207 | .. code-block:: bash | |
3fe3b222 | 208 | |
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209 | ./bin/gmg dbupdate |
210 | ||
211 | You should now be able to upload .obj and .stl files and MediaGoblin | |
212 | will be able to present them to your wide audience of admirers! | |
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213 | |
214 | PDF and Document | |
215 | ================ | |
216 | ||
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217 | To enable the "PDF and Document" support plugin, you need: |
218 | ||
219 | 1. pdftocairo and pdfinfo for pdf only support. | |
220 | ||
221 | 2. unoconv with headless support to support converting libreoffice supported | |
222 | documents as well, such as doc/ppt/xls/odf/odg/odp and more. | |
223 | For the full list see mediagoblin/media_types/pdf/processing.py, | |
224 | unoconv_supported. | |
225 | ||
226 | All executables must be on your execution path. | |
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227 | |
228 | To install this on Fedora: | |
229 | ||
230 | .. code-block:: bash | |
231 | ||
3606316e | 232 | sudo yum install -y poppler-utils unoconv libreoffice-headless |
a80ebf3b | 233 | |
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234 | Note: You can leave out unoconv and libreoffice-headless if you want only pdf |
235 | support. This will result in a much smaller list of dependencies. | |
236 | ||
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237 | pdf.js relies on git submodules, so be sure you have fetched them: |
238 | ||
239 | .. code-block:: bash | |
240 | ||
241 | git submodule init | |
242 | git submodule update | |
243 | ||
244 | This feature has been tested on Fedora with: | |
245 | poppler-utils-0.20.2-9.fc18.x86_64 | |
246 | unoconv-0.5-2.fc18.noarch | |
247 | libreoffice-headless-3.6.5.2-8.fc18.x86_64 | |
248 | ||
249 | It may work on some earlier versions, but that is not guaranteed. | |
250 | ||
91bee92e | 251 | Add ``[[mediagoblin.media_types.pdf]]`` under the ``[plugins]`` section in your |
919cd2fd | 252 | ``mediagoblin_local.ini`` and restart MediaGoblin. |
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253 | |
254 | Run | |
255 | ||
256 | .. code-block:: bash | |
257 | ||
258 | ./bin/gmg dbupdate | |
259 | ||
260 | ||
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261 | Blog (HIGHLY EXPERIMENTAL) |
262 | ========================== | |
263 | ||
264 | MediaGoblin has a blog media type, which you might notice by looking | |
265 | through the docs! However, it is *highly experimental*. We have not | |
266 | security reviewed this, and it acts in a way that is not like normal | |
267 | blogs (the blogposts are themselves media types!). | |
268 | ||
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269 | So you can play with this, but it is not necessarily recommended yet |
270 | for production use! :) |