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Check out VideoPad editor. Install the trial and BE SURE TO DECLINE ALL THE OTHER SOFTWARE (some of it is actually pretty good but decline it). After you install it go to your control panel and select uninstall. Find the Video Pad Editor and double click. If the option is still there (it is on mine at version 3.02) you will see an option to downgrade to the free version. Select it and proceed. Try a small video file to be sure there are not stamps and that you can output HD quality. I have the paid version now and am not 100% sure what is in the free version. It is probably the best one out there if it is still really free. I use this sometimes but have mostly switched to another that is made by my image editing people (not free).