User Manual

Preserving HD Closed Captioning and Ancillary Data
1094
Adding the Active Format Description to the Data Track
Active Format Description (AFD) is a standard set of codes that can be sent in the video stream
that carries information about the aspect ratio and the active picture characteristics. AFD
information allows you to display the video of one aspect ratio on a display with another aspect
ratio. When in an HD project, you can choose to add the AFD information to the data track.
If a data track is already present in the sequence and populated with ancillary data, the AFD
value will simply be added to the data track.
If you have master clips in the Timeline that have ancillary data, the existing ancillary data will
be unaffected unless it contains AFD. The AFD that is assigned to the sequence will change the
attribute in the sequence, not the source.
To add the AFD to the Data Track:
1. Right+click the sequence to which you want to add the AFD and select Modify.
The Modify window opens.
2. Select Active Format Description.
The Modify window displays the Active Format Description options.