I got this for use by myself and my son. We're both keen gamers and I also do some video game reviews for a website, so I thought this would be ideal for capturing video to use in reviews and my son was keen to get into the current Youtube craze for Minecraft-related videos. He also programs his own computer games and wanted to capture some videos of those for his website.
Unfortunately we soon found that this caused Minecraft to slow to a crawl and there was no way to record any kind of commentary/narration at the same time. So his plans for Minecraft videos went out of the window, sadly. It also flatly refused to record any footage of the video games he had programmed himself. No idea why?
Eventually we went looking for an alternative and found FRAPS which we found to be far superior. I would save yourself the hassle and google for that instead of buying this.