The NEX-FS100 is one of the excellent cameras of Sony in favor of by many cameramen. It is sporting an Exmor Super35 CMOS Sensor using the E-Mount Interchangeable Lens System with a 3.5" XtraFine LCD Screen, able to shoot 1920 x 1080p Slow & Quick Motion footage in NXCAM Recording Format (AVCHD). Sounds quite cool, doesn’t it? However, many FS100 users reflected that every time when they import Sony FS100 MTS to Final Cut Pro, either FCP 7 or FCP X, they cannot load the files. Why?
Actually, if you need to edit NEX-FS100 AVCHD in Final Cut Pro (with the file extension of .mts or .m2ts), you have to transcode Sony NEX-FS100 AVCHD MTS/M2TS to QuickTime MOV format beforehand. That’s mainly because FCP does not support AVCHD MTS/M2TS format while QuickTime MOV fits Final Cut Pro perfectly. To do so, Doremisoft AVCHD Converter for Mac is your best assistant.
After downloading the program, double click to launch it, then click "Add File" icon to import AVCHD .mts/.m2ts files by browsing your local disk or your camcorder. You can load and convert more than one file at a time.
After loading the MTS files, hit the profile box of "Profile" to choose Final Cut Pro--Apple ProRes 422 (*.mov) as the output video format.
When the settings are done, directly press the big purple Start button to convert FS100 AVCHD to FCP accepted MOV format. Thereafter, you can easily import Sony FS100 MTS to Final Cut Pro to edit.