User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:40.0) Gecko/20100101 Firefox/40.0 Build ID: 20150807085045 Steps to reproduce: Using Firefox 40, go to http://steamcommunity.com/?subsection=broadcasts an click on any video. The website will complain that the browser doesn't fulfill the requirements. Now go to about:config and set media.mediasource.whitelist to false. The broadcasts will work just fine. Originally Firefox had problems with these boradcasts, however the format of the broadcasts changed so that they now should be compatible. See discussion at https://bugzilla.mozilla.org/show_bug.cgi?id=1108086 . Steam broadcast URLs have the format "http://steamcommunity.com/broadcast/watch/(some number)".
Bug 1185611 — MSE will be enabled for all sites starting with Firefox 42. Closing accordingly, based on bug 1185621, bug 1185625 and bug 1187080.
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