Brief text descriptions accompanying images or providing subtitles for audio content in videos.
From Latin 'captio' meaning a taking or seizing, through Old French 'caption'. Originally meant the act of taking something, but evolved to mean headings and then descriptive text.
Closed captions were originally developed for deaf viewers in the 1970s, but now 85% of Facebook videos are watched without sound, making captions essential for all viewers. The technology has evolved from manually typed text to AI-generated captions with impressive accuracy.
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