Open Whisper Systems >> Blog >> Video calls for Signal out of beta
We recently released encrypted video calling as an opt-in beta. We’ve spent the past month collecting feedback and addressing the issues that the Signal community found in order to get it production ready. Today’s Signal release for Android and iOS enables support for end-to-end encrypted video calls …
As with texts and calls, video is encrypted end-to-end, so nobody, including spy agencies, can eavesdrop on your business.
"You can now place peer-to-peer (P2P) calls rather than going through Signal's server like before, reducing call latency. To make sure that your privacy is preserved, however, it'll only do that if you initiate the call or receive one from a known contact. That way, your IP address and location won't be exposed, as can happen in a P2P situation.
If desired, you can also change a setting to make calls through Signal's service and avoid P2P altogether. To improve privacy, the company recently added a "domain fronting" option, routing all messages through Google's domain to stop governments in nations like Egypt from blocking them."
Despite the crappy messaging by Wikileaks government agencies can only intercept communications if they gain complete access to your phone. Signal is still secure.