EAPM Style and Accessibility Guide
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closed captioning

Abbreviated CC. Synchronized text that accompanies video to describe dialogue and sound effects. It is stored as a separate track from the audio and video and can be turned on and off by the viewer.

There are multiple types of closed captioning formats:

  • .SRT (SubRip) — A plain text file and the commonly used format. Contains the caption text with start and end timecodes. Compatible with all major social media platforms, as well as YouTube, Amazon, Vimeo, and Netflix.
  • .SBV or .SUB (SubViewer) — A plain text caption file format, used for adding captions or subtitles to YouTube videos. Includes start and end timestamps for each caption.
  • .VTT (WebVTT) — A highly compatible with most major web platforms based on the SRT format. Can include metadata and other descriptions including screen placement in addition to the caption text.
  • .DXFP (Distribution Format Exchange Profile) — A XML format compatible with YouTube, Vimeo, Netflix, all Adobe products, and some Microsoft products. Contains information about formatting and caption location specifications in addition to caption text.
  • .SCC (Scenarist Closed Caption) — A file format created for analog TV, VHS and DVD formats and for iTunes, Netflix, and Amazon. Includes caption text, timings, and details on the look and placement of captions.

Also see open captions.

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