AVMutableCaption
A mutable caption subclass that you use to create new captions.
Declaration
class AVMutableCaptionTopics
Configuring text and timing
Configuring the region
Configuring font styles
AVCaption.FontStylesetFontStyle(_:in:)removeFontStyle(in:)AVCaption.FontWeightsetFontWeight(_:in:)removeFontWeight(in:)AVCaption.DecorationsetDecoration(_:in:)removeDecoration(in:)