Gtalk doent supports video , but there is an addon in Gmail to use the same
- Download the voice and video chat plug-in, quit all open browser windows, and install the plug-in.
- Sign in to Gmail, iGoogle or orkut.
- In your chat list, 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 to them; just click the cameraicon to place a video call or the phone icon to place a voice call.
If your friend doesn’t have a camera next to their name in your chat list, you can invite them to download the voice and video chat plug-in from the Video & more menu in a chat window. Even if your friend doesn’t have a video camera, you can still have a voice chat or a 1-way video chat.
If you don’t have a camera yet and want to get one, here are some cameras that we know work well with voice and video chat: