Have you checked out VidSnatcher yet??
If not, what are you waiting for?
A Video editor that works on Mac, PC, and other computers with a web browser... and you get it for less than the cost of one month of Adobe Premier! ($32/mo)
With this, you can edit video, do green screen, add transitions, do screen capture, record voiceovers, add text, do text to speech and MUCH more!
If you want top edit without the high prices or the crazy learning curve, then...
