AVCHD Videos: MTS/M2TS files
AVCHD (AVC-HD, AVC HD) video is recorded using the MPEG-4 AVC/H.264 video compression codec. Audio is stored in compressed form (Dolby AC-3).
The recorded file's extension is MTS on camcorder and M2TS after import to computer. If you copy the recorded video directly (command C and command V), you may also get MTS files.)
The recorded file's extension is MTS on camcorder and M2TS after import to computer. If you copy the recorded video directly (command C and command V), you may also get MTS files.)
How to get M2TS/MTS files off AVCHD camcorder

1. Connect camcorder to your Mac computer with cable (USB/Firewire/Wifi);
2. Select mode of camcorder such as Computer mode;
3. iMovie will automatically open Import window;
4. If DVD Player is automatically opened, just quit DVD Player first;
5. So Now, you can preview your video or select "Import All"(make sure your switch is set to "Automatic");
6. If you select "Manual", you can import specific clips to iMovie;
7. If you import footage from Tape-based devices (DV/HDV), iMovie will automatic revise tape and import all;
How to convert MTS or M2TS files on a Mac
To: MP4, MOV, AVI, WMV, QuickTime, iMovie, Final Cut, iTunes, iPod, iPhone, etc
The Mac M2TS/MTS Video Converter provides you with a perfect solution. Just 3 simple steps as follows:Step 1: Add Video files
Click the Add button, and the program will let you browse your computer hard drive.
Select the video files you want to convert and click OK.

Step 2: Output Settings
Select an output format from the Format drop-down list. Just select an format according to the player which you want to put your videos on.

Step 3: Finish The Job
Clicking the Start button. The Mac AVCHD video converter will finish the conversion automatically.
Edit Converted Videos
Here is a step by step guide about how to edit videos with iMovie. It would provide you with something useful.

