Class: AVAsset

Inherits:

NSObject

• Object
• NSObject
• AVAsset

show all

Overview

Instance Attribute Summary (collapse)

• - availableChapterLocales readonly

  The locales available for chapters in the asset.

• - availableMediaCharacteristicsWithMediaSelectionOptions readonly

  An array of media characteristics for which a media selection option is available.

• - availableMetadataFormats readonly

  An array of strings, each representing a metadata format that’s available to the asset.

• - commonMetadata readonly

  An array of metadata items for each common metadata key for which a value is available.

• - compatibleWithSavedPhotosAlbum readonly

  Indicates whether the asset can be written to the Saved Photos album.

• - composable readonly

  Indicates whether the asset can be used within a segment of an AVCompositionTrack object.

• - creationDate readonly

  Indicates the creation date of the asset.

• - duration readonly

  The duration of the asset.

• - exportable readonly

  Indicates whether the asset can be exported using AVAssetExportSession.

• - hasProtectedContent readonly

  Indicates whether the asset has protected content.

• - lyrics readonly

  The lyrics of the asset suitable for the current locale.

• - playable readonly

  Indicates whether the asset, or its URL, can be used to initialize an instance of AVPlayerItem.

• - preferredRate readonly

  The natural rate at which the asset is to be played.

• - preferredTransform readonly

  The preferred transform to apply to the visual content of the asset for presentation or processing.

• - preferredVolume readonly

  The preferred volume at which the audible media of asset is to be played.

• - providesPreciseDurationAndTiming readonly

  Indicates whether the asset provides precise timing.

• - readable readonly

  Indicates whether the asset’s media data can be extracted using AVAssetReader.

• - referenceRestrictions readonly

  The reference restrictions being used by the receiver.

• - tracks readonly

  The tracks contained by the asset.

Class Method Summary (collapse)

• + assetWithURL:

  Returns an asset for inspection of a media resource.

Instance Method Summary (collapse)

• - cancelLoading

  Cancels the loading of all values for all observers.

• - chapterMetadataGroupsBestMatchingPreferredLanguages:

  Returns an array of chapters whose locale best matches the the list of preferred languages.

• - chapterMetadataGroupsWithTitleLocale:containingItemsWithCommonKeys:

  Returns an array of chapters with a given title locale and containing specified keys.

• - mediaSelectionGroupForMediaCharacteristic:

  Returns an AVMediaSelectionGroup object that contains one or more options with the specified media characteristic.

• - metadataForFormat:

  Returns an array of AVMetadataItem objects, one for each metadata item in the container of the specified format You can filter the array by locale using metadataItemsFromArray:withLocale: (AVMetadataItem) or by key using metadataItemsFromArray:withKey:keySpace: (AVMetadataItem).

• - tracksWithMediaCharacteristic:

  Returns an array of AVAssetTrack objects of the asset that present media with a specified characteristic.

• - tracksWithMediaType:

  Returns an array of the asset tracks of the asset that present media of a specified type.

• - trackWithTrackID:

  Returns the track with a specified track ID.

• - unusedTrackID

  Returns an ID that is currently unused by any of the tracks in the asset.

Methods inherited from NSObject

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