Collections 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
![WWDC15 - Videos - Apple Developer](https://cdn-ak-scissors.b.st-hatena.com/image/square/06b4e45dccc98e712fdf00b706ec7b1d8fce4ca8/height=288;version=1;width=512/https%3A%2F%2Fdevimages-cdn.apple.com%2Fwwdc-services%2Fimages%2F2%2F703%2F703_wide_250x141_2x.jpg)