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If uploaded to a section, captions will appear in the media player and the transcript viewer files will display in the Transcripts tab on the item page.:
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Accepted File Formats
Captions
Caption files must be in WebVTT or SRT format.
Transcripts
Transcript To display within the Trascript tab, files must be in one of the following formats:
Word Document (.docx)
Text File
WebVTT
Other formats will still be displayed to users for download.