How to Chat from Gmail with Hangouts

This video tutorial explains how to use the chat feature in Gmail, focusing on moving the chat widget for better visibility, starting and managing chats, and using Google Hangouts. It covers enabling the 'right side chat' lab, finding and chatting with contacts, understanding online status indicators, and initiating video calls. The tutorial emphasizes the convenience of Hangouts for quick communication and video meetings, especially when users are in different locations.

Describe the process to start a video call using Hangouts.

What should both sides have to successfully conduct a video hangout?