Firefox Hello is a new beta feature in Firefox 34 which give users the ability to do plugin-free video-conferencing without leaving the browser (using WebRTC technology).

If you cannot get it to work after adding the Hello button to the toolbar, this post may help.

Preferences to check

There are a few preferences to check in about:config :

media.peerconnection.enabled should be true

should be network.websocket.enabled should be true

should be loop.enabled should be true

should be loop.throttled should be false

NoScript

If you use the popular NoScript add-on, you will need to whitelist the following hosts:

about:loopconversation

hello.firefox.com

loop.services.mozilla.com

opentok.com

tokbox.com

RequestPolicy

If you use the less popular but equally annoying RequestPolicy add-on, then you will need to whitelist the following origin to destination mappings:

about:loopconversation -> opentok.com

-> about:loopconversation -> tokbox.com

-> firefox.com -> mozilla.com

-> firefox.com -> opentok.com

-> firefox.com -> tokbox.com

If you find a more restrictive policy that works, please leave a comment!