Assistive Technology

ADA Best Practices for Caption Style and Formatting: 

• Spelling should be at least 99% accurate.
• When multiple speakers are present, sometimes it is helpful to identify who is speaking, especially when the video does not make this clear.
• Both upper and lowercase letters should be used.
• The font should be a non-serif, such as Helvetica medium.
• Non-speech sounds like [MUSIC] or [LAUGHTER] should be added in square brackets.
• Punctuation should be used for maximum clarity in the text, not necessarily for textbook style.
• Captions should preserve and identify slang or accents.

from: 3PlayMedia 
Retrieved 1/7/19 from: https://www.3playmedia.com/2018/12/06/the-ada-online-video-captioning-standards/