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.

Export Zero Subtitle

Adds the Zero Subtitle to the exported file.