A readable style needs enough text size, clear contrast and sensible placement for the actual screen and viewing distance. A contrasting outline or background can help over changing scenes. There is no single font size that suits every television, room or viewer.
Test bright and dark footage
White text can disappear over snow or a bright shirt, while dark text can disappear in a night scene. Use a style with consistent separation from the picture, such as an available background box or outline. Compare several scenes rather than choosing a style from a plain settings preview alone.
Leave room for multiple lines
Very large captions can cover faces or push lines beyond the screen edge. Increase size gradually and check a two-line cue containing punctuation and speaker information. If text is clipped, first rule out player zoom and television overscan before shrinking everything to an unreadable size.
Respect the viewer’s preference
A shared screen may need different styles for different people. Save a supported profile or note the chosen settings where possible. Player controls generally affect selectable text tracks, not captions already burned into the picture. If a track is unreadable because the wording changes too quickly, styling alone cannot fix its timing or editorial problems.
