The Closed Caption Conversion Service (CCCS) is a Linux service that is installed with other MediaCentral Platform Services. The CCCS does the work of importing SCC files or extracting closed captions from the D tracks of a sequence, and converting them to data in the Timed Text Markup Language (TTML) format.

The TTML data is associated with the sequence in the Interplay Production database. If you save a sequence with closed captions, the next time you open it the closed captions from the TTML data will be displayed in the Closed Captioning pane.

The CCCS also does the work of exporting the edited file back to the SCC format or repackaging the edited file with the Interplay Production sequence. This sequence can then be viewed in Media Composer, or sent to a playback device.

The edited sequence points to new standalone D track. Closed caption information is not written back to the D tracks of the master clips that compose the sequence.