hello, this particular plugin was installed with the update to firefox 33. http://andreasgal.com/2014/10/14/openh264-now-in-firefox/

The new "OpenH264 Video Codec provided by Cisco Systems, Inc." plugin that now shows up in the Firefox Add-ons Manager Plugins list was added in Firefox 33.0. It's installed in a subfolder of your [[Profiles|Firefox profile folder]], which you can confirm by typing '''about:plugins''' in the Firefox address bar to bring up a list of installed plugins (details [http://kb.mozillazine.org/Issues_related_to_plugins#Identifying_installed_plugins here]) and checking its "Path" entry . The first link in the [https://www.mozilla.org/en-US/firefox/33.0/releasenotes/ Firefox 33.0 release notes] under What’s New, has this: '''New''' | [http://andreasgal.com/2014/10/14/openh264-now-in-firefox/ OpenH264 support] * (sandboxed) [*] Quoted from the linked page, http://andreasgal.com/2014/10/14/openh264-now-in-firefox/ (which also includes a [https://andreasgal.files.wordpress.com/2014/10/openh264.jpg screenshot] of the Add-ons Manager entry): <blockquote>Today in collaboration with Cisco we are shipping support for H.264 in our WebRTC implementation. </blockquote> <blockquote>Cisco has agreed to distribute OpenH264, a free H.264 codec plugin that Firefox downloads directly from Cisco.</blockquote> <blockquote> Note: Firefox currently uses OpenH264 only for WebRTC and not for the <nowiki><video></nowiki> tag, because OpenH264 does not yet support the high profile format frequently used for streaming video. We will reconsider this once support has been added. </blockquote> See also: *https://wiki.mozilla.org/Media/WebRTC *https://wiki.mozilla.org/GeckoMediaPlugins

hello, this particular plugin was installed with the update to firefox 33. http://andreasgal.com/2014/10/14/openh264-now-in-firefox/ 

'''To h_p14''' Your question, asking when the "openh264 / video codec provided by cisco systems" plugin was installed, was answered on Nov 3rd by philipp and and I posted some additional information later that day, which included a link to the [https://www.mozilla.org/en-US/firefox/33.0/releasenotes/ Firefox 33.0 release notes]. I'm taking the liberty of marking your question "solved" by the reply from philipp, who wrote the following: ''hello, this particular plugin was installed with the update to firefox 33. http://andreasgal.com/2014/10/14/openh264-now-in-firefox/ ''