edx/edx-platform — pull request #618 by caesar2164 (2013-08-08 22:25:03+00:00)
Title: changing http:// to https:// on intro video urls

Firefox 23 has started blocking mixed content (https://blog.mozilla.org/tanvi/2013/04/10/mixed-content-blocking-enabled-in-firefox-23/) so the urls should be changed to https.