iOS:Framework:AV Foundation Framework:Tasks

Asset

• Creating an Asset
• Loading Data
• Accessing metadata
• Accessing Tracks
• Determining Usability
• Getting a New Track ID
• Accessing Common Metadata
• Preferred Asset Attributes
• Managing Reference Restrictions
• Media Selections

Asset Export Session

• Initializing a Session
• Configuring Output
• Export Presets
• Exporting
• Export Status
• Accessing the Asset

Asset Image Generator

• Creating a Generator
• Generating Images
• Managing Generation Time Tolerance
• Generation Behaviour

Asset Reader

• Creating a Reader
• Managing Output
• Controlling Reading
• Asset Properties

Asset Reader Audio Mix Output

• Creating an Audio Mix output
• Settings

Asset Reader Output

• Copying a Buffer
• Inspecting the Media Type

Asset Reader Track Output

• Creating a Track Output
• Properties

Asset Reader Video Composition Output

• Creating a Video Composition Output
• Video Properties

Asset Resource Loader

• Accessing the Delegate
• Getting the Dispatch Queue

Asset Resource Loading Content Information Request

• Getting and Setting Content Information

Asset Resource Loading Data Request

• Providing Data to a Request

Asset Resource Loading Request

• Accessing the Request Data
• Reporting the Result of the Request

Asset Track

• Basic Properties
• Temporal Properties
• Track Language Properties
• Visual Characteristics
• Audible Characteristic
• Frame-Based Characteristics
• Track Segments
• Managing Metadata
• Associated Tracks

Asset Track Group

• Getting Track ID Values

Asset Track Segment

• Properties

Asset Writer

• Creating an Asset Writer
• Writing Data
• Managing Inputs
• Managing Session Time
• Configuring output
• Managing Asset Writer Input Groups

Asset Writer Input

• Creating an Asset Writer Input Instance
• Adding Samples
• Configuring a Writer Input
• Managing Track Associations
• Inspecting a Writer Input
• Managing Language Settings

Asset Writer Input Group

• Creating an Asset Writer Input Group
• Getting the Asset Writer Input Group Settings

Asset Writer Input Pixel Buffer Adaptor

• Creating an Adaptor
• Adding a Pixel Buffer
• Inspecting a Pixel Buffer Adaptor

Asynchronous Video Composition Request

• Getting the Pixel Buffer for a Specific Frame
• Finishing the Composition Request
• Getting the Composition Request Settings

Audio Mix

• Input Parameters

Audio Mix Input Parameters

• Getting the Track ID
• Getting Volume Ramps
• Getting an Audio Tap
• Getting the Time Pitch Algorithm Setting

Audio Player

• Initializing an AVAudioPlayer Object
• Configuring and Controlling Playback
• Managing Information About a Sound
• Using Audio Level Metering

Audio Recorder

• Initializing an AVAudioRecorder Object
• Configuring and Controlling Recording
• Managing Information About a Recording
• Using Audio Level Metering

Audio Session

• Getting the Shared Audio Session
• Requesting User Permission to Record
• Managing an Audio Session
• Working with Audio Device Settings
• Working with Audio Channels
• Working with Audio Input and Output Routes

Audio Session Channel Description

• Getting the Channel Information

Audio Session Port Description

• Getting the Port Attributes
• Managing a Port's Data Sources

Audio Session Route Description

• Getting the Input and Output Ports

Capture Audio Data Output

• Managing the Delegate
• Getting and Setting Audio Settings

Capture Connection

• Configuration
• Managing Video Configuration
• Managing the Video Mirroring Settings
• Managing the Video Stabilization Settings

Capture Device

• Discovering Devices
• Verifying Authorization
• Managing the Device's Configuration
• Managing Formats
• Managing Focus Settings
• Managing Exposure Settings
• Managing White Balance Settings
• Managing Zoom Settings
• Managing Flash Settings
• Managing Torch Settings
• Managing Frame Rate Settings
• Monitoring Subject Area Change
• Inspecting Device Characteristics

Capture Device Format

• Inspecting Capture Format Attributes

Capture Device Input

• Creating an Input
• Accessing the Device

Capture File Output

• Managing Recording
• Configuration
• Information About Output

Capture Input

• Accessing the Ports

Capture Metadata Output

• Accessing the Delegate and Callback Queue
• Accessing the Metadata Items

Capture Movie File Output

• Movie Configuration

Capture Output

• Accessing Connections
• Converting Between Coordinate Systems

Capture Session

• Managing Inputs and Outputs
• Managing Running State
• Configuration Change
• Managing Session Presets
• Sharing the Application's Audio Session
• Synchronizing Multiple Inputs and Outputs

Capture Still Image Output

• Capturing an Image
• Getting and Setting Image Stabilization Settings
• Configuring Image Settings
• Image Format Conversion

Capture Video Data Output

• Configuration
• Retrieving Supported Video Types
• Managing the Delegate

Capture Video Preview Layer

• Creating a Preview Layer
• Layer Configuration
• Configuration
• Converting Between Coordinate Systems

Composition

• Accessing Tracks
• Getting the Natural Size

Composition Track

• Accessing Track Segments

Composition Track Segment

• Creating a Segment
• Segment Properties

Media Selection Group

• Accessing Options
• Configuring Empty Selection
• Filtering Selection Options

Media Selection Option

• Managing Media Types
• Managing Metadata
• selection Playable Status
• Language and Locale Settings
• Property List Serialization
• Getting the Associated Media Selection Option

Metadata Face Object

• Getting the Face Identifier
• Accessing the Face Detection Data

Metadata Item

• Keys and Key Spaces
• Asynchronous Loading
• Accessing Values
• Type Coercion
• Filtering Arrays of Metadata Items

Metadata Item Filter

• Creating a Metadata Item Filter

Metadata Machine Readable Code Object

• Getting Machine Readable Code Value

Metadata Object

• Getting the Type of Metadata
• Getting the Media-Related Attributes

Mutable Audio Mix

• Creating a Mix
• Input Parameters

Mutable Audio Mix Input Parameters

• Creating Input Parameters
• Managing the Track ID
• Setting the Volume
• Getting an Audio Tap
• Time Pitch Settings

Mutable Composition

• Managing Time Ranges
• Creating a Mutable Composition
• Managing Tracks
• Video Size

Mutable Composition Track

• Managing Time Ranges
• Validating Segments
• Track Properties

Mutable Metadata Item

• Creating a Mutable Metadata Item
• Key and Key Space
• Values

Mutable Timed Metadata Group

• Modifying the Group

Mutable Video Composition

• Creating a Video Composition
• Getting and Setting Video Composition Properties
• Managing the Custom Video Compositor

Mutable Video Composition Instruction

• Creating an Instruction
• Properties

Mutable Video Composition Layer Instruction

• Creating an Instruction
• Track ID
• Managing Properties
• Cropping Settings

Output Settings Assistant

• Creating an Output Settings Assistant
• Getting Output Settings Recommendations

Player

• Creating a Player
• Managing Playback
• Managing Time
• Managing External Playback
• Synchronizing Playback to an External Source
• Timed Observations
• Managing Closed Caption Display
• Managing Audio Output
• Player Properties
• Managing AirPlay
• Media Selection Criteria Settings

Player Item

• Creating a Player Item
• Getting Information About an Item
• Moving the Playhead
• Information About Playback
• Timing Information
• Settings
• Accessing Logs
• Selecting Media Options
• Accessing the Text Style Rules
• Managing the Item's Outputs

Player Item Access Log

• Accessing Log Data

Player Item Access Log Event

• Getting Server Related Log Events
• Getting Playback Related Log Events
• Getting Bitrate Log Events

Player Item Error Log

• Accessing Error Data

Player Item Error Log Event

• Information About the Event

Player Item Legible Output

• Creating a Player Item Legible Output Instance
• Setting and Getting Attributed String Text Styling Settings
• Configuring the Delegate

Player Item Output

• Converting Time Information
• Configuring the Playback Options

Player Item Track

• Getting Properties

Player Item Video Output

• Initializing the Player Item Video Output
• Accessing the Delegate
• Notifying the Delegate of Changes
• Getting Pixel Buffer Data

Player Layer

• Creating a Player Layer
• Getting and Setting Player Layer Values

Player Media Selection Criteria

• Creating a Media Selection Criteria
• Media Selection Criteria Settings

Queue Player

• Creating a Queue Player
• Managing Items

Speech Synthesis Voice

• Finding Voices
• Working with Language Codes

Speech Synthesizer

• Synthesizing Speech
• Controlling Speech Synthesis
• Managing the Delegate

Speech Utterance

• Creating an Utterance
• Configuring Utterance Speech

Synchronized Layer

• Creating an Synchronized Layer
• Managing the Player Item

Text Style Rule

• Creating and Initializing Style Rules
• Accessing the Style Attributes
• Exporting the Style Rules

Timed Metadata Group

• Creating and Analyzing a Metadata Group

URL Asset

• Creating an URL Asset
• Accessing the URL
• Accessing the Resource Loader
• Finding Compatible Tracks
• Getting Supported Media Types

Video Composition

• Creating a Video Composition Object
• Getting Composition Properties
• Validating the Time Range

Video Composition Core Animation Tool

• Creating a Composition Tool

Video Composition Instruction

• Getting Composition Instruction Properties

Video Composition Layer Instruction

• Getting the Track ID
• Getting Opacity, Transform, and Cropping Ramps

Video Composition Render Context

• Creating the Pixel Buffer
• Rendering Settings
• New Methods

NSCoder AV Foundation Additions

• Encoding Core Media Time Structures
• Decoding Core Media Time Structures

NSValue AV Foundation Additions

• Creating a Value Object
• Retrieving Core Media Time Structures

Asset Resource Loader Delegate

• Processing Resource Requests

Asynchronous Key Value Loading

• Protocol Methods

Audio Player Delegate

• Responding to Sound Playback Completion
• Responding to an Audio Decoding Error
• Handling Audio Interruptions

Audio Recorder Delegate

• Responding to the Completion of a Recording
• Responding to an Audio Encoding Error
• Handling Audio Interruptions

Audio Session Delegate

• Delegate Methods

Capture Audio Data Output Sample Buffer Delegate

• Delegate Methods

Capture File Output Recording Delegate

• Delegate Methods

Capture Metadata Output Objects Delegate

• Processing Emitted Metadata Objects

Capture Video Data Output Sample Buffer Delegate

• Managing Sample Buffer Behavior

Player Item Legible Output Push Delegate

• Providing Alternate Attributed String Output

Player Item Output Pull Delegate

• Responding to Pixel Buffer Changes

Player Item Output Push Delegate

• Flushing Sequence State

Speech Synthesizer Delegate

• Responding to Speech Synthesis Events

Video Compositing

• Creating a Video Compositing Instance
• Rendering the Composition
• Render Context Settings
• Pixel Buffer Attributes

Video Composition Validation Handling

• Validation Methods

Functions

Audio Settings Constants

Constants

Error Constants

Metadata Key Constants