Closed Captions (often abbreviated to CC) are defined as subtitles PLUS what at Kinonation we call “Atmospherics” – additional captions that describe relevant, unspoken audio. So, closed captions = subtitles + atmospherics. Subtitles are simply captions that exactly match the dialogue track. For a narrative feature, the subtitles will, of course, match the script, albeit with some sentences broken up to correspond to the tempo of the dialog as spoken. For documentaries, subtitles will correspond to each of the featured individuals, plus a narration or voice-over track, if that exists.