The M2TS container with filename extension .MTS or .m2ts is also used in AVCHD format, which is a high definition digital video camera recorder format. AVCHD is a simpler form of the Blu-ray Video standard with just one video encoding algorithm and two audio encodings. Compared to Blu-ray Video format, AVCHD can use various storage media, such as DVD media, memory cards or hard disk drives. The M2TS container contains videos recorded using AVCHD camcorders, such as the Sony's HDR-SR(xx)series models. Panasonic, Canon and other brands of AVCHD camcorders also store recorded video in M2TS container format.
Free download and install MTS/M2TS to iMovie Converter for Mac
Step 1, Load video files to Mac MTS/M2TS to iMovie Converter
Click the "Load" button to add video files to the Mac video converter pro.
Step 2, Set output format and output folder.
Choose the file you want to convert, click "Format" drop-down button to choose MTS/M2TS as your output format, then click "Browse" button to choose destination folder for saving your converted AAC files. This Mac Video Converter Pro also can convert FLV video to all popular formats on Mac for iPod, iPhone, PSP, PS3, Mobile Phone, Apple TV, Zune, Creative Zen, AAC players and MP3 players and so on.

Step 3, Change video and audio Settings
You can change the Resolution, Encoder, Bit rate and Frame rate of the video and Sample Rate, Channels, Encoder and Bit Rate of the Audio. The size of the file depends a lot on these settings.

Step 4, Start Conversion
When you get ready to convert the added videos on Video Converter Pro for Mac, click the Convert button to start conversion and then you can just go out for a walk or take a nap, and the conversion may have been finished when you come back.
