Main Movie mode loads the main movie (the longest title by default), while Custom Mode allows you to freely select which titles to load. If you choose Full Movie, the program would load all source Blu-ray/DVD movies for converting. Note: When you load Blu-ray/DVD movies for converting, you’re provided with 3 different loading modes: Full Movie, Main Movie and Custom Mode.
After importing, you could play back loaded media files, select subtitles and audio tracks, add external subtitles to loaded video files, merge all files into one, move certain loaded file up or down, etc.
You could also import video folder or Blu-ray/DVD disc by clicking the drop-down arrows next to these 2 buttons. Under the 'Convert' tab, click 'Add Video' or 'Add UHD/Blu-ray/DVD' to import source video or Blu-ray/DVD movies for converting respectively. How to Convert DVD and Video on Mac OS X Step 1 Add source files