Video Chatting in Facebook
The first time you use Facebook's video chat, you'll be prompted to download and install the necessary background chat applet. Follow the onscreen instructions to do so.
Once everything is installed, it's quite easy to start a video chat. In fact, there are two ways to do so.
The first way is to go to a friend's profile page on the Facebook site. You'll see a new Start a Video Call button at the top right of the profile page; click this button to start the call.
Figure 2 Initiating a video chat from a friend's profile page
Another approach is to display the new Chat list and click the name of the friend you want to chat with. When the Chat window appears, click the Start a Video Call (camera) button at the top of the window.
Figure 3 Initiating a video chat from the chat window
However you get started, conducting a video call is equally simple. Your friend appears in a big window that sits on top of the Facebook page; your picture is in a smaller window at the top right. All you have to do is talk.
When you're ready to close the chat, hover over the chat window and then click the X at the top-right corner.
Figure 4 Conducting a Facebook video chat
Note that Facebook video chat is currently one-to-one chat only. This is in contrast with some other services, such as Google+ Hangout, which allow group video chats. (For what it's worth, Facebook has intimated that group video chatting will be added at some later date.)