2019.x

Preserving HD Closed Captioning and Ancillary Data
935
If the clip does not meet all the requirements to extract an ancillary data clip, a dialog box
appears that informs you of the problem. Open the Console window (Tools > Console) to get
more information about the problem.
3. Click Continue or Cancel.
The system adds the Data track with the clip to the Timeline. The clip in the bin displays D1 in
the Track column.
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To playback the D1 track, you must have the ancillary data turned on in the Media Creation Settings
> Capture tab. See “Controlling Ancillary Data through a Settings Window - Data Track Method” on
page 939.
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 > Modify Clip.
The Modify window opens.
2. Select Active Format Description.
The Modify window displays the Active Format Description options.
3. Select the Active format information you want to include with the data track. The active format
options change depending upon the selected Coded Frame. A graphical representation of the
active format is displayed in the Modify window to show you how the active format area will be
displayed.