This is version 2.18 of the AWS Elemental Server documentation. This is the latest version. For prior versions, see the *Previous Versions* section of [AWS Elemental Conductor File and AWS Elemental Server Documentation](https://docs.aws.amazon.com/elemental-server/).

# Ancillary (QuickTime Captions Track or Captions in MXF VANC Data)
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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

AWS Elemental Server does not create output captions in these formats, but you can convert them to a [supported output format](choose-a-supported-output-captions-format.md)..

**Note**  
If your content includes 608 XDS data, see [Setting Up Input Captions With 608 XDS Data](setting-up-for-608-xds-data.md)

**For ancillary captions**
+ Create one captions selector per track to 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.