# Deprecated symbols Review unsupported symbols and their replacements. ## Discussion [`AVAsset`](/documentation/AVFoundation/AVAsset) doesn’t support using its synchronous property accessors that can block the calling thread. Instead, use the [`load(_:isolation:)`](/documentation/AVFoundation/AVAsynchronousKeyValueLoading/load(_:isolation:)) method to load [`AVAsyncProperty`](/documentation/AVFoundation/AVAsyncProperty) values asynchronously. ## Topics ### Accessing duration and timing [`var duration: CMTime`](/documentation/AVFoundation/AVAsset/duration) A time value that indicates the asset’s duration. [`var providesPreciseDurationAndTiming: Bool`](/documentation/AVFoundation/AVAsset/providesPreciseDurationAndTiming) A Boolean value that indicates whether the asset provides precise duration and timing. [`var minimumTimeOffsetFromLive: CMTime`](/documentation/AVFoundation/AVAsset/minimumTimeOffsetFromLive) A time value that indicates how closely playback follows the latest live stream content. ### Accessing tracks [`var tracks: [AVAssetTrack]`](/documentation/AVFoundation/AVAsset/tracks) The tracks an asset contains. [`func track(withTrackID: CMPersistentTrackID) -> AVAssetTrack?`](/documentation/AVFoundation/AVAsset/track(withTrackID:)) Returns a track that contains the specified identifier. [`func tracks(withMediaType: AVMediaType) -> [AVAssetTrack]`](/documentation/AVFoundation/AVAsset/tracks(withMediaType:)) Returns tracks that contain media of a specified type. [`func tracks(withMediaCharacteristic: AVMediaCharacteristic) -> [AVAssetTrack]`](/documentation/AVFoundation/AVAsset/tracks(withMediaCharacteristic:)) Returns an array of asset tracks matching the specified media characteristic. [`func unusedTrackID() -> CMPersistentTrackID`](/documentation/AVFoundation/AVAsset/unusedTrackID()) Returns an identifier that no other tracks in the asset use. ### Accessing track groups [`var trackGroups: [AVAssetTrackGroup]`](/documentation/AVFoundation/AVAsset/trackGroups) The track groups an asset contains. ### Accessing metadata [`var metadata: [AVMetadataItem]`](/documentation/AVFoundation/AVAsset/metadata) An array of metadata items for all metadata identifiers for which a value is available. [`var commonMetadata: [AVMetadataItem]`](/documentation/AVFoundation/AVAsset/commonMetadata) The metadata items an asset contains for common metadata identifiers that provide a value. [`var availableMetadataFormats: [AVMetadataFormat]`](/documentation/AVFoundation/AVAsset/availableMetadataFormats) The metadata formats this asset contains. [`func metadata(forFormat: AVMetadataFormat) -> [AVMetadataItem]`](/documentation/AVFoundation/AVAsset/metadata(forFormat:)) Returns an array of metadata items from the container with the specified format. [`var creationDate: AVMetadataItem?`](/documentation/AVFoundation/AVAsset/creationDate) A metadata item that indicates the asset’s creation date. [`var lyrics: String?`](/documentation/AVFoundation/AVAsset/lyrics) The lyrics of the asset in a language suitable for the current locale. ### Accessing suitability [`var isPlayable: Bool`](/documentation/AVFoundation/AVAsset/isPlayable) A Boolean value that indicates whether the asset has playable content. [`var isExportable: Bool`](/documentation/AVFoundation/AVAsset/isExportable) A Boolean value that indicates whether you can export this asset using an export session. [`var isReadable: Bool`](/documentation/AVFoundation/AVAsset/isReadable) A Boolean value that indicates whether you can extract the asset’s media data using an asset reader. [`var isComposable: Bool`](/documentation/AVFoundation/AVAsset/isComposable) A Boolean value that indicates whether you can use the asset as a segment of a composition track. [`var isCompatibleWithAirPlayVideo: Bool`](/documentation/AVFoundation/AVAsset/isCompatibleWithAirPlayVideo) A Boolean value that indicates whether the asset is compatible with AirPlay Video. [`var isCompatibleWithSavedPhotosAlbum: Bool`](/documentation/AVFoundation/AVAsset/isCompatibleWithSavedPhotosAlbum) A Boolean value that indicates whether you can write the asset to the Saved Photos album. ### Accessing asset preferences Prefer loading access preferences asynchronously using the properties in Loading Asset Preferences. [`var preferredRate: Float`](/documentation/AVFoundation/AVAsset/preferredRate) The asset’s rate preference for playing its media. [`var preferredVolume: Float`](/documentation/AVFoundation/AVAsset/preferredVolume) The asset’s volume preference for playing its audible media. [`var preferredTransform: CGAffineTransform`](/documentation/AVFoundation/AVAsset/preferredTransform) The asset’s transform preference to apply to its visual content during presentation or processing. [`var preferredDisplayCriteria: AVDisplayCriteria`](/documentation/AVFoundation/AVAsset/preferredDisplayCriteria) The asset’s display mode preference for optimal playback of its content. [`var preferredMediaSelection: AVMediaSelection`](/documentation/AVFoundation/AVAsset/preferredMediaSelection) The default media selections for this asset’s media selection groups. ### Accessing media selections [`var allMediaSelections: [AVMediaSelection]`](/documentation/AVFoundation/AVAsset/allMediaSelections) The array of available media selections for this asset. [`var availableMediaCharacteristicsWithMediaSelectionOptions: [AVMediaCharacteristic]`](/documentation/AVFoundation/AVAsset/availableMediaCharacteristicsWithMediaSelectionOptions) An array of media characteristics for which a media selection option is available. [`func mediaSelectionGroup(forMediaCharacteristic: AVMediaCharacteristic) -> AVMediaSelectionGroup?`](/documentation/AVFoundation/AVAsset/mediaSelectionGroup(forMediaCharacteristic:)) Returns a media selection group that contains one or more options with the specified media characteristic. ### Accessing chapter metadata [`var availableChapterLocales: [Locale]`](/documentation/AVFoundation/AVAsset/availableChapterLocales) The locales of the asset’s chapter metadata. [`func chapterMetadataGroups(withTitleLocale: Locale, containingItemsWithCommonKeys: [AVMetadataKey]?) -> [AVTimedMetadataGroup]`](/documentation/AVFoundation/AVAsset/chapterMetadataGroups(withTitleLocale:containingItemsWithCommonKeys:)) Returns an array of chapters that contain the specified title locale and common keys. [`func chapterMetadataGroups(bestMatchingPreferredLanguages: [String]) -> [AVTimedMetadataGroup]`](/documentation/AVFoundation/AVAsset/chapterMetadataGroups(bestMatchingPreferredLanguages:)) Returns an array of chapters with a locale that best matches the list of preferred languages. ### Accessing content protections [`var hasProtectedContent: Bool`](/documentation/AVFoundation/AVAsset/hasProtectedContent) A Boolean value that indicates whether the asset contains protected content. ### Accessing fragment support [`var canContainFragments: Bool`](/documentation/AVFoundation/AVAsset/canContainFragments) A Boolean value that indicates whether you can extend the asset by fragments. [`var containsFragments: Bool`](/documentation/AVFoundation/AVAsset/containsFragments) A Boolean value that indicates whether at least one movie fragment extends the asset. [`var overallDurationHint: CMTime`](/documentation/AVFoundation/AVAsset/overallDurationHint) The total duration of fragments that currently exist, or may exist in the future. ### Inspecting visual attributes [`var naturalSize: CGSize`](/documentation/AVFoundation/AVAsset/naturalSize) The encoded or authored size of the visual portion of the asset. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)