Subtitle Gremlins -

This is the most common gremlin of all. You see a character's lips move, but the text doesn't appear until they've already walked off-screen.

Usually a mismatch between the Frame Rate (FPS) of the video and the subtitle file (e.g., a subtitle file timed for 23.976 fps played on a 25 fps video). subtitle Gremlins

Subtitles that are too small to read, bright neon green, or stuck at the very top of the screen are often the work of hard-coded formatting gremlins. This is the most common gremlin of all