Problem
=======
Clicking video links on https://integration.wikimedia.org/ci/job/mwext-mw-selenium-jessie/725/
e.g.
https://integration.wikimedia.org/ci/job/mwext-mw-selenium-jessie/725/artifact/log/Search%3A%20Search%20with%20search%20in%20pages%20button.mp4
do not work :(
Reason
=====
#Jenkins [[ https://wiki.jenkins-ci.org/display/JENKINS/Configuring+Content+Security+Policy | Content Security Policy ]] defaults to `sandbox; default-src 'none'; img-src 'self'; style-src 'self';`:
Specially `default-src 'none'` probihits loading scripts, URLs for AJAX/XHR/WebSockets/EventSources, fonts, plugin objects, media, and frames from anywhere.
Images and styles are allowed via ` img-src 'self'` and `style-src 'self'`
Might want to set `media-src: self`.
Work-around
===========
Download the video (right-click, save-as) and play it locally (it's not actually corrupt, even if your browser says it is).