Framework

AVFoundation

Work with audiovisual assets, control device cameras, process audio, and configure system audio interactions.

Overview

AVFoundation combines several major technology areas that together encompass a wide range of tasks for inspecting, playing, capturing, and processing audiovisual media on Apple platforms.

Topics

Common

Media Assets
Load media assets from files and streams to inspect their attributes, tracks, and embedded metadata.
Media Reading and Writing
Read images from video, export to alternative formats, and perform sample-level reading and writing of media data.
Media Types and Utilities
Identify the types of content and file formats that AVFoundation supports.
Video Settings
Configure video processing settings using standard key and value constants.
Audio Settings
Configure audio processing settings using standard key and value constants.

Playback

Media Playback
Manage the playback of media assets and interstitial content, independent of how you present that content in your interface.
Streaming and AirPlay
Stream content wirelessly to other devices using AirPlay, and handle requests involving FairPlay-protected assets.
Offline Playback and Storage
Download streamed content to disk to allow offline playback, and define policies to automatically remove downloaded assets.
Sample Buffer Playback
Create custom controllers to play and synchronize the timing of sample buffer streams.

Capture

Capture Setup
Configure built-in cameras and microphones, and external capture devices, for media capture.
Photo Capture
Capture high-quality still images, Live Photos, and supporting photo data.
Audio and Video Capture
Capture audio and video directly to media files, or capture streams of media for direct access to media sample buffers.
Additional Data Capture
Capture additional data including depth and metadata, and synchronize capture from multiple outputs.

Editing

Composite Assets
Combine tracks and segments of tracks from multiple assets into a composite asset that you can play or process.
QuickTime Movies
Access the contents of a QuickTime movie file, and perform sample-level edits of its media tracks.
Video Effects
Define standard video transition effects, synchronize layer animations with media timing, and create custom video compositors.
Audio Mixing
Define how to mix the audio levels from multiple audio tracks over an asset’s duration.

Audio

Audio Playback, Recording, and Processing
Play, record, and process audio; configure your app’s system audio behavior.
Speech Synthesis
Configure voices to speak strings of text.

Errors

let AVFoundationErrorDomain: String
The error domain of AVFoundation errors.
struct AVError
A structure that defines the errors that framework operations can generate.