Verified answer

CamStudio is quite good but it is not in active development and lack of editing features. AFAIK, now the best free screen recording software is ActivePresenter:

- Record high quality video with audio narration, cursor movement...

- Rich editing features: cut, split, join, change volume, add shape comment, zoom & pan, closed caption, freeze-frame, transition effects, multiple video overlays (PiP)

- COMPLETELY FREE: no watermark, no time limit, no trial period, no registration, no subscription, and no signup.

ActivePresenter homepage: http://atomisystems.com/activepresenter/free-editi...

I use Camstudio all the time for my youtube videos, i make tutorial videos and it works perfectly, however the output is usually very high, at around 1GB per Minute of Video, so be sure to use Freemake Video Converter, and you can convert a 2gb clip down to about 15mb.

http://www.freemake.com/free_video_converter/