Mode

With the Mode section you can choose to prepare the subtitles for the Closed Captions CEA 608, TeleCap I or TeleCap II modes. Differences between these modes are described in the Project Settings section.

Channel

Depending on your choice for Channel, the prepared subtitle file will be inserted in one of the four data channels associated with Closed Captions: CC1 and CC2 in Field 1, CC3 and CC4 in Field 4.

Export in uppercase (alternative charset)

Changes all letters in the output file to UPPERCASE.

Double Control Codes

Control Codes are duplicated for ensure correct transmission.

Interleave CC data for 23.976fps video to maintain 30/1.001 pairs per second

Changes how caption's timings are calculated for 23.976fps in accordance with the CEA-708-B standard.

When the option is turned on, 3 pairs of CC data will be encoded for every other frame. And when it's turned off - 2 pairs of CC data will be encoded for every video frame. Or in other words, turning the option on allows 25% more text to be decoded over the same period of time which also accounts for decreasing the "time to process" required for each caption.

Note: This option is available only when the project is configured for 23.976fps. Whether it's clicked on or off by default depends on how the same option is configured at the Project Settings/Safe Area menu. We don't recommend turning the option on when it isn't turned on in the Project Settings. And vise-versa.!

Export Extended Character Set

Enables the use of characters from the Line 21 extended character list set.

Appropriate error message will be displayed on export if there were extended characters but the option wasn't switched on.

Blank between pop-ons

Blank between pop-ons serve the same purpose as min. interval between subtitles. 2 frames is the default value.

QuickTime compatible SCC

The output caption file could be played under Mac OS via QuickTime player with ClosedCaptionImporter filter installed. Please note, that if you are producing 23.976fps SCC files, you shall make sure that either 30fps Drop or Non-Drop has been selected from the Timecode Format drop-down.

Custom Frame Separator

Enables you to specify custom symbol to separate frames from seconds of the timecode in the output file. Colon (:) is used as the default symbol.

Erase Display Memory on Programme Start

Enables insertion of Erase Display Memory (EDM) control code at the selected Programme Start Timecode(see below). This may be needed by certain equipment and applications, like QuickTime, to correctly keep Closed Captions data in sync with the video playback.

Programme Start Timecode

Manual - enables you to manually type in EDM timecode.

Auto - automatically sets the Programme Start timecode using the first subtitle's In-cue rounded down to the closes hour. For example, if the first subtitle starts at 10:00:32:21 EDM's value will be automatically set to 10:00:00:00.

Programme Start TC - automatically uses the value of the Programme Start TimeCode parameter saved in the Details. Programme Start TC can be selected from Video/Setup Timecode with a video opened in.

Video Start TC - automatically gets video's start time as specified in Video/Setup Timecode. This option can be used only when a video is loaded in.

Export Zero Subtitle

Adds the Zero Subtitle to the exported file.