What is the best video editing software?

The free video editing software Windows Movie Maker is attached on you Windows OS, you can find it : Start---> Program--Movie Maker!

And here is a professional software Adobe Premiere need US $799.00, http://www.adobe.com/products/premiere/.

If you want to convert the video with easy use,like cut/convert/merge/resize/split functions,the video converter can helps you convert videos to MP4,AVI,FLV etc. http://www.wondershare-ppt2dvd.com/video-converter.html (Windows/Mac)

Mybe you need a software like photo , music, video joiner, here is it http://www.wondershare-ppt2dvd.com/photo-story-platinum.html