Fix aspect ratio MPEG2 with iDealshare VideoGo for Mac

Is there anybody who tried this tool to fix aspect ratios?

http://www.idealshare.net/video-converter/change-video-aspect-ratio.html

I don't know if this is a trusted site/download?

With VideoGo for the Mac one should be able to fix aspect ratio issues with MPEG2's.

I don't know of any other tool for the Mac that can do this.