If your input captions are in either of the following formats, the service handles them as "ancillary" data:
-
QuickTime captions track (format QTCC)
-
MXF VANC data
MediaConvert does not create output captions in these formats, but you can convert them to a supported output format.
For ancillary captions
-
Create one captions selector per track that you will use in your outputs.
-
In each captions selector, for Source, choose Ancillary.
-
In each captions selector, for CC channel, choose the channel number for the track that is associated with the selector.
For example, the input captions have English in CC channel 1 and Spanish in CC channel 2. To use these captions, create Captions selector 1, and then choose 1 in the CC channel dropdown list. Next, create Captions selector 2, and then choose 2 in the CC channel dropdown list.
