This utility provides you with a quick and simple solution for converting videos between 2D and 3D formats. 4Videosoft 3D Converter for Mac works with dozens of video formats, supports batch conversion, preserves the quality of the input clips, and much more.
The application lets you choose from 3 conversion profiles: 2D to 3D, 3D to 3D, and 3D to 2D. Each module comes with individual output settings which users with little video editing experience might find difficult to configure. However, you can read the app's guide from the homepage of the developer for instructions or search for "3D conversion" on Google for additional assistance.
The 2D to 3D conversion mode offers you an extensive list of output profiles, such as Side by Side (Half-Width), Red/cyan anaglyph high quality Dubois, Amber/blue anaglyph monochrome, and many others. You can preview the final clip before launching the conversion process in case you need to make sure you selected the correct 3D conversion profile.
All 3 conversion modes worked perfectly in my testing and there was no quality loss. Plus, the utility took a small amount of time to convert the input videos.
The one thing I'd add would be an integrated help guide to teach users the differences between all 3D output profiles.
As for the rest, I can't find any reasons why you shouldn't give this program a try if you ever need to convert 2D movies to 3D format and vice versa.