Well this app does some of the things it claims, but others are 'missing in action'. The biggest plus is yes you can actually join and SAVE AS.. two or more mpgs via copy and paste with the audio coming out the other end along with the video. That is the good news, plus the ability to do likewise to another format like .mov (use EXPORT for other formats). In the trial the export is slowed by the process being stoppped for an 'ad break' every ten seconds to buy the app, which is unnecessary and will result more in lost sales I suspect. The downside is that mpgs cannot be be dragged and dropped to the player screen to join a la Quicktime then saved. You have to open each segment in a new window, copy and paste to first window, a very annoying process and that needs a PRONTO FIX by the programmers. Also there is NO EXPORT TO .MPG1/2 in the export menu, just the regular QT pro selection. Thus, it has rather limited functionality. Considering VideoLAN player does everything this app does and much more, except join clips, it is hard to see a $24 value here given VideoLANs $0 price tag. Yes QT pro is more expensive, but that does not mean either are value compared to some good free software such as USBvision exported (very underrated), mpegStreamclip, and VLC player. This DOES NOT imply all software apps should be free, rather they must be reasonably priced for the job they actually do out in the real world, and a whole bunch less hype about all those "world changing" apps would be a huge improvement.