Camstudio 2.51 beta is free Open source Windows application that can record desktop screenshots as videos. Camstudio records videos in industry standard AVI format and can be converted into Flash videos by the inbuilt features, if required.
Camstudio is an excellent tool for Bloggers, students, etc .for producing high quality video tutorials and demonstrations. Camstudio has so many options, including tools for controlling video quality, adding effects and for the selection of recording area.
Camstudio comes with its own codec that can produce high quality audio with lower file size. The best thing is that Camstudio and Camstudio codec is free for personal and commercial use So if you are a C++ developer, you could make use of it.
Download Camstudio codec.
Download Camstudio here and Record desktop activities in Windows.