Version 1 seems to have the ability to use "proper codec", so if you have an div3 coded movie it is opened with the divx3 decoder. Div3 movies are "lighter" than div5 or latest xvid coded ones. So, I assume that is the cause for some variations. Another one is the ripping quality itself, like bitrate, keyframe arangement and video resolution. If the bitrate is high the file is larger, quality is better, more speed requiered. Also large resolutions require more power. This could be another explanation. But not for YOU CPU. It is strong enough for any actual movie. But there is also another post concerning a fast cpu with the same problem. Let's see what came up.
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