I have shot many family videos by my Panasonic camera. In our home we have a NAS for storage. So I want to convert the mts files to m4v to view my clips on iPad/Apple TV. Then I did a search online”MTS Converter” and found your Pavtube mts/m2ts converter. It was free and easy to use . This Free version is totally handled my needs. I downloaded it from mac app store, https://itunes.apple.com/hk/app/free-mts-m2ts-converter/id517643843?mt=12 . First , I would think that the free version may not do a very decent job. But the most surprising thing is that the free version is absolute a good one. Without any annoying watermark , convertors ads or some kind of “tutorial” and “how to blog” wasting time stuff. Anyway, free software did a great job even better than the paid one !