canAdd(_:)
Determines whether the asset writer supports adding the input group.
Declaration
func canAdd(_ inputGroup: AVAssetWriterInputGroup) -> BoolParameters
- inputGroup:
The asset writer input group to add.
Return Value
true if you can add the input group to the asset writer; otherwise false.
Discussion
This method returns false if the asset writer’s output file type doesn’t support mutually exclusive relationships among tracks, or if the input group contains inputs with media types that you can’t relate.