iTT (iTunes Timed Text) subtitles

An industry-standard format for delivering onscreen text synchronized to a video. iTT subtitles can be used to deliver foreign-language translations or a transcript of dialogue, narration, or audio descriptions to people who are deaf or hard of hearing. iTT subtitles, which use the .itt filename extension, offer more limited formatting options than CEA-608 captions. In Compressor, you can specify whether to let viewers turn iTT subtitles on or off (for example, for full foreign-language translations) or force subtitles to appear onscreen (for example, for specific characters in a movie who speak a different language). In Compressor, iTT subtitles are compatible with iTunes Store packages and some transcode presets.