An object used to modify the presentation state of an asset track being presented by a player.


class AVPlayerItemTrack : NSObject


This class is intended to represent the presentation state for a track of an asset that's played by an AVPlayer and AVPlayerItem. To ensure safe access to nonatomic properties while dynamic changes in playback state may be reported, clients must serialize their access with the associated AVPlayer notification queue. Serialization is naturally achieved by invoking the AVPlayerItemTrack methods on the main thread or queue.


Configuring Track Properties

var assetTrack: AVAssetTrack?

The asset track for which the player item track represents its presentation state.

var isEnabled: Bool

A Boolean value that indicates whether the track is enabled for presentation during playback.

var currentVideoFrameRate: Float

The current frame rate of the video track as it plays.

var videoFieldMode: String?

A mode that specifies the handling of video frames that contain multiple fields.

let AVPlayerItemTrackVideoFieldModeDeinterlaceFields: String

A video field mode used to request deinterlacing of video fields.


Inherits From

Conforms To

See Also

Media Playback

class AVPlayer

An object that provides the interface to control the player’s transport behavior.

class AVQueuePlayer

A player used to play a number of items in sequence.

class AVPlayerLayer

An object that manages a player's visual output.

class AVPlayerItem

An object used to model the timing and presentation state of an asset played by the player.

class AVPlayerItemMetadataCollector

An object used to capture the date range metadata defined for an HTTP Live Streaming asset.

class AVSynchronizedLayer

An object used to synchronize with a specific player item.

class AVPlayerMediaSelectionCriteria

An object that specifies the preferred languages and media characteristics for a player.

class AVSampleBufferAudioRenderer

An object used to decompress audio and play compressed or uncompressed audio.

class AVSampleBufferDisplayLayer

An object that displays compressed or uncompressed video frames.

class AVSampleBufferRenderSynchronizer

An object used to synchronize multiple queued sample buffers to a single timeline.

class AVRouteDetector

An object that detects the presences of media playback routes.