Sign in to chat.

Select the contact you want to call. If they have a camera icon next to their name, you can make a voice or video call just click Actions and Start video chat.If they dont have a camera icon, it means they dont have the app installed, but you can send them an invitation to download it. Cameraless friends can still participate in voice chat through the app and have a conversation where only one side is in video. Since sometimes reading lol doesnt deliver the same punch as actually hearing your friend laugh at your jokes, you can now use voice and video capabilities in chat, says Google. You can have an actual conversation with someone seriously, out loud, or even chat face to face over video.System requirements for the app are Windows XP or later or Intel Mac OS X 10.4 or later.