AV Foundation for iOS and OS X® Programming—Get Started Fast!   If you develop media-rich iOS or OS X apps, you can do amazing things with Apple’s AV Foundation. However, the framework is extremely large, reliant on cutting-edge language features, and poorly documented. Now, there’s a more productive way to master these immensely powerful technologies: Bob McCune’s Learning AV Foundation. McCune’s live presentations and GitHub projects have already helped thousands of Apple developers get started with AV Foundation. Building on his experience, McCune helps you gain true mastery by creating real-world apps, hands-on. You’ll build a voice memo app, custom video player, video editor, and an image/video camera app. As you proceed, you’ll master all the techniques you need to write your own advanced media apps from scratch. Throughout, McCune provides carefully crafted challenges and complete starter apps—all designed to help you deepen your understanding and make the most of Apple’s breakthrough media framework.   COVERAGE INCLUDES Understanding how AV Foundation fits in Apple’s media environment and each of its key areas of functionality Enabling your apps with audio playback and recording features Enhancing video playback to deliver a richer, more dynamic experience Using AV Kit to match your user interfaces with iOS Videos or OS X QuickTime Player Developing media capture apps with real-time video processing using OpenGL ES and Core Image Implementing custom video players Integrating advanced capture features such as video zooming, face detection, barcode scanning, and high frame rate capture Mixing multiple audio tracks and automating volume control Building sophisticated non-linear, non-destructive editing apps Adding advanced video editing capabilities, such as video transitions and animation effects

Table of Contents:
Preface   xiii Part I: AV Foundation Essentials   1   Chapter 1: Getting Started with AV Foundation   3   What Is AV Foundation?   3   Where Does AV Foundation Fit?   4   Decomposing AV Foundation   6   Understanding Digital Media   7   Digital Media Compression   13   Container Formats   18   Hello AV Foundation   19   Summary   23   Challenge   24 Chapter 2: Playing and Recording Audio   25   Mac and iOS Audio Environments   25   Understanding Audio Sessions   26   Audio Playback with AVAudioPlayer   28   Building an Audio Looper   30   Configuring the Audio Session   34   Handling Interruptions   36   Responding to Route Changes   40   Audio Recording with AVAudioRecorder   42   Building a Voice Memo App   45   Enabling Audio Metering   52   Summary   57 Chapter 3: Working with Assets and Metadata   59   Understanding Assets   59   Creating an Asset   60   Asynchronous Loading   63   Media Metadata   65   Working with Metadata   70   Building the MetaManager App   76   Saving Metadata   98   Summary   101   Challenge   101 Chapter 4: Playing Video 103   Playback Overview 103   Playback Recipe 107   Working with Time 109   Building a Video Player 110   Time Observation 118   Creating a Visual Scrubber 124   Showing Subtitles 129   Airplay 133   Summary 136   Challenge 136 Chapter 5: Using AV Kit   137   AV Kit for iOS   137   AV Kit for Mac OS X   140   First Steps   140   Control Styles   144   Going Further   147   Working with Chapters   151   Enabling Trimming   157   Exporting   159   Movie Modernization   161   Summary   165   Challenge   166 Part II: Media Capture   167   Chapter 6: Capturing Media   169   Capture Overview   169   Simple Recipe   174   Building a Camera App   175   Summary   208   Challenge   208 Chapter 7: Using Advanced Capture Features   209   Video Zooming   209   Face Detection   216   Machine-Readable Code Detection   228   Using High Frame Rate Capture   241   Processing Video   247   Understanding CMSampleBuffer   249   Summary   257   Challenge   258 Chapter 8: Reading and Writing Media   259   Overview   259   Building an Audio Waveform View   265   Advanced Capture Recording   276   Summary   293   Challenge   293 Part III: Media Creation and Editing   295   Chapter 9: Composing and Editing Media   297   Composing Media   297   Working with Time   300   Basic Recipe   303   Introducing 15 Seconds   307   Building a Composition   311   Exporting the Composition   316   Summary   321   Challenge   322 Chapter 10: Mixing Audio   323   Mixing Audio   323   Mixing Audio in the 15 Seconds App   327   Summary   333   Challenge   333 Chapter 11: Building Video Transitions    335   Overview    335   Conceptual Steps    337   15 Seconds: Adding Video Transitions    348   Summary    360   Challenge    360 Chapter 12: Layering Animated Content   361   Using Core Animation   361   Using Core Animation with AV Foundation   363   15 Seconds: Adding Animated Titles   367   Preparing the Composition   378   Summary   383   Challenge   384