Because John Wick: Chapter 2 contains scenes with Italian and American Sign Language, you generally need one of two types of subtitle files:
These only show up during non-English dialogue (e.g., when John speaks with characters in Rome or uses ASL with Ares). subtitle John.Wick:.Chapter.2.2017.720p.BluRay....
Most modern players will automatically detect the subtitle if named correctly. Right-click the video while playing →right arrow Subtitle →right arrow Sub Track →right arrow select your file. Because John Wick: Chapter 2 contains scenes with