Approximately 15–21 characters per second (CPS) to allow viewers time to read and watch the action.
Usually center-justified at the bottom, but moved to the top if they block essential visual information like faces or lower-third graphics. 3. Common Subtitle File Formats Subtitle File Formats: A Comprehensive Overview - Matesub subtitle Basic
Permanently "burnt" into the video file and cannot be turned off. Approximately 15–21 characters per second (CPS) to allow
Primarily used to translate spoken dialogue into another language. subtitle Basic