Say i have 2 hours of video and only 30 min to watch it, and find the important parts.

I know www.ziuz.com has a product that will summarize the video into 4 or more little screens and speed it up by removing some frames while not loosing the content. They claim I can watch a 1 hour video in 10 minutes. Hard to explain how they do it but it looks pretty good.

Is there other software that anyone knows of? I need to compare my options.

Anything that can atutomatically shorten a video down even by removing frames. Anything will be great!