An online discussion led to my learning about Udemy’s support for closed captioning and to the formats available for it. Since I hadn’t heard about these formats before, I’m guessing a lot of other people haven’t. They can be useful not only for accessibility but for preservation, since they provide a textual version of spoken words in a video. These are just some notes on what I’ve found in a cursory investigation. In general, sites that support closed captioning expect a text file in one of several formats, which has to have at least the text of the caption, its starting time, and its duration or ending time.
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