DCNC - Appendix #9 - Labeling Open and Closed Caption Files
Open and Closed Caption files are coded as “CCAP” for Closed Caption and “OCAP” for Open Caption.
If used, CCAP and/or OCAP should appear at the end of the Language field after a hyphen.
The example above is a Version File (VF-1) that modifies an OV file in order to add the Closed Captions. The language in the audio and the Closed Captions is the same. “EN” appears in both the audio and subtitle sections of the Language Field.
The OV file this Version File would access (the FTR-1 OV) would be labeled without any language indication in the subtitle portion of the Language Field:
If the Language Code is UPPER CASE, the sub-titles are generated in real time by the projector. If the Language Code is lower case, the subtitles are burned into the image already
In the Composition Playlist
Information about Closed Captions is listed at //Reel//ClosedCaption:
Information about Open Captions is listed at //Reel//MainCaption:
- Captions are described in SMPTE 429-12.
- Both ClosedCaption and MainCaption are an extension of the CPL TrackFileAssetType, which contains several sub-elements (some optional, some mandatory) not described here. See the spec for details.