Shane Lee

Please keep in mind that AVCHD is not a Mac readable format by default, you need to do something extra to solve this incompatible issue.   VLC, plays almost everything including AVCHD, and it is  cross-platform (Windows, Mac, Linux).   Or visit http://www.ilikemall.com/how-to/convert-mts-to-mov-mac.html to convert them to QuickTime movie files.   Usually, i go with downloading VLC player, but if you want to sync the AVCHD files to your Mac iOS device or things like that, you will need to convert them anyway.   so it's a matter of personal preference, really.