Powerful free screen recording program bb flashback express
BB Flashback Express is a free screen recording program that can capture your PC’s screen, sound, and webcam video and supports capturing graphics/animations, including 3D graphics. It offers a high degree of control over your video (output resolution, quality, file size, recording modes, mouse auto scroll, and cursor highlighting effects). Saves resulting files as either FLV’s, AVI’s or SWF’s, and offers the ability to easily upload videos to YouTube or embed them inside a webpage.
Change resolution while recording: you can capture the whole screen or part of the screen and the software can automatically re size the output to a pre-set resolution. For example you can capture full screen and set the output size to, say 640