The date at which a new resource loading request will be issued for resources that expire, if the media system still requires it.
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+
- tvOS 9.0+
If the asset resource is prone to expiry set the value of this property to the date at which a renewal should be triggered. You must do this before you finish loading an
AVAsset object. This value must be set sufficiently early enough to allow an
AVAsset, delivered to the delegate’s
resource method ß to finish before the actual expiry time, otherwise media playback may fail.