This post offers a wealth of information when it comes to recording things like webinars, Google Hangouts, and Skype calls.

Before we dive in, I want to highlight two takeaways:

1. If you have Windows XP, you may not be able to do this without a workaround/hack (more detail in the PDF).

2. The TechSmith products that work best for this task are Snagit 11.1 on Windows, Camtasia for Mac 2.2, Camtasia Studio 7 or 8, and Camtasia Relay 4.1.1.

http://blogs.techsmith.com/tips-how-tos/how-to-record-skype-google-hangouts-and-webinars/#.USiEZVe5L-u