MOV files are used in QuickTime player, when we got MOV files, if we want to play MOV files on any players, convert MOV to MP4, mp4 files can be playered in almost all players. 1. Rename the MOV files directly on Windows 2. Use the QuickTime to convert MOV to MP4: just import MOV files to QuickTime, then setup the output format of MOV as MP4, export MOV files. 3. Use the MOV to MP4 converter to convert MOV to MP4 in batch without quality loss.