Introducing the New System Fonts ― WWDC 2015 - Videos - Apple DeveloperCollections Audio & Video Developer Tools Graphics & Games Maps & Location Privacy & Security Safari & Web Platforms iOS macOS tvOS visionOS watchOS Audio & Video 35:51 Editing Movies in AV Foundation WWDC 2015 macOS Learn how to use the new AVMutableMovie class to modify media files and simplify your editing workflows. See how to support segment-based editing and discover the power of sample refe
