Multimedia February 2018

multimedia@lists.wikimedia.org

4 participants
4 discussions

Wiki Education Brazil GLAM Reconstrução 3D
by Chris Koerner 23 Feb '18

23 Feb '18

This is a pretty cool use of support for 3D objects on Commons. >From User:Rodrigo Padula [0], shared on the Wikipedia Weekly Facebook group [1], "Hello everyone, We started to upload to Commons some 3D objects of facial reconstructions produced by Cicero Moraes. These first files are from a reconstruction of a Brazilian indian as announced here [2] 1 - File:Reconstrução_facial_-_crânio_-_Cáceres-MT.stl [3] 2 - File:Reconstrução_facial_-_busto_-_Cáceres-MT.stl [4] More information about this project: [5]" [0] https://meta.wikimedia.org/wiki/User:Rodrigo_Padula [1] https://www.facebook.com/groups/wikisocialmediahub/permalink/93902582955600… [2] https://g1.globo.com/mt/mato-grosso/noticia/cranio-de-indigena-que-viveu-ha… [3] https://commons.wikimedia.org/wiki/File:Reconstrução_facial_-_crânio_-_Cáce… [4] https://commons.wikimedia.org/wiki/File:Reconstrução_facial_-_busto_-_Cácer… [5] https://meta.wikimedia.org/wiki/Wiki_Education_Brazil/Projects/GLAM_Reconst… Yours, Chris Koerner Community Liaison Wikimedia Foundation

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3D extension support patches
by Brion Vibber 22 Feb '18

22 Feb '18

Inspired by everybody's awesome work getting the 3D extension live, I spent some time yesterday making some tweaks, including working with Hashar to get continuous integration testing working for the 3d2png tool. :) Review on the patches would be welcome! 3d2png: * https://gerrit.wikimedia.org/r/#/c/413182/ - fix for test on node 7+ * https://gerrit.wikimedia.org/r/#/c/413183/ - fix for test loading files before they're completely written * https://gerrit.wikimedia.org/r/#/c/413184/ - update reference rendering to match current code * https://gerrit.wikimedia.org/r/#/c/413277/ - fix for Linux to run 'npm test' internals through xvfb-run, add mesa libs to debian package description * https://gerrit.wikimedia.org/r/#/c/413344/ - cleaner error throw in case GL doesn't initialize Hashar has already merged the configuration changes to CI and confirmed it now runs correctly with these patches in; we can take it out of experimental mode once these are merged. I also noticed that upload.wikimedia.org serves the .stl files uncompressed; gzipping would cut bandwidth usage and thus transfer time approximately in half. Patch to main puppet config which I think will resolve this: * https://gerrit.wikimedia.org/r/#/c/413236/ - apply gzip for application/sla files -- brion

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MPEG-1 and MPEG-2 support patch in progress
by Brion Vibber 17 Feb '18

17 Feb '18

US patents on MPEG-2 video compression expired recently, so I took a stab at a patch adding support for uploading .mpeg/.mpg files containing MPEG-1/2 material: https://gerrit.wikimedia.org/r/#/c/411051/ https://phabricator.wikimedia.org/T166024 I expect this to be most useful for importing old videos from scientific papers and web sites (small files), and for archival footage from GLAM institutions such as digitizations of old SD broadcasts and tips of modern HD broadcasts (large files) -- importing the original files would avoid recompression artifacts and save time and effort re-encoding. A couple concerns and thoughts: * Most browsers don't display MPEG-1 or MPEG-2 natively, so playback is completely reliant on the WebM transcodes. * Small files as found on scientific open access papers seem to import fine. These would no longer have to be pre-converted to Ogg or WebM before upload. * Archival footage from broadcast etc might use MPEG-2 codec but a different stream format (MPEG-TS) -- if working with GLAMs to get existing footage, we might need to do more work for processing them. Should investigate this if there is interest. * MPEG-2 is the format used for DVDs. Piracy might be a concern, but the large file size and complex file layout of full length movies may be a hedge against drive by uploads. * There are still patents open in the Philippines and Malaysia: http://www.mpegla.com/main/programs/M2/Pages/PatentList.aspx -- do we need to wait for these or is the US patent expiration enough? -- brion

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No Keegan at Tuesday standups
by Keegan Peterzell 06 Feb '18

06 Feb '18

Hey all, I facilitate our Technical Collaboration team meeting on Tuesday mornings, so I can't make those standups. Today I'll be emailing Ramsey and Pam about closing the Consultation, and spreading the word externally about our upcoming IRC office hours while I work on the internal communication. -- Keegan Peterzell Technical Collaboration Specialist Wikimedia Foundation

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Multimedia February 2018