Quite Good Conversion Software and Have a Try

Guide: How to convert M2TS video to other formats with Mac m2ts Converter.

1. Free download the proper one and install in your Mac:
 

mac m2ts converter

2. Add files by clicking "add file" button and you can see these check files in the list:

convert m2ts on mac

3. Default the Output Format you want the converted videos to be:

4. Start converting by clicking "start" button and you can see:

m2ts converter for mac
Well done! The files have been successfully converted. Free download and enjoy it. More videos should be converted.

 
Mac M2TS Converter