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AVMutableCompositionMBS class

Super class: AVCompositionMBS

Type Topic Plugin Version macOS Windows Linux Console & Web iOS
class AVFoundation MBS AVFoundation Plugin 13.2 Yes No No Yes, macOS only No
Function: AVMutableComposition is a mutable subclass of AVComposition you use when you want to create a new composition from existing assets.
Notes:
You can add and remove tracks, and you can add, remove, and scale time ranges.
You can make an immutable snapshot of a mutable composition for playback or inspection with the copy method.
Subclass of the AVCompositionMBS class.

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Super class AVCompositionMBS

Super class AVAssetMBS

Reference Restriction Modes

Constant Value Description
AVAssetReferenceRestrictionForbidAll &hFFFF Indicates that only references to media data stored within the asset's container file should be allowed.
AVAssetReferenceRestrictionForbidCrossSiteReference 4 Indicates that references from a remote asset to remote media data stored at a different site should not be followed.
AVAssetReferenceRestrictionForbidLocalReferenceToLocal 8 Indicates that references from a local asset to local media data stored outside the asset's container file should not be followed.
AVAssetReferenceRestrictionForbidLocalReferenceToRemote 2 Indicates that references from a local asset to remote media data should not be followed.
AVAssetReferenceRestrictionForbidNone 0 Indicates that all types of references should be followed.
AVAssetReferenceRestrictionForbidRemoteReferenceToLocal 1 Indicates that references from a remote asset (for example, referenced via http URL) to local media data (for example, stored in a local file) should not be followed.

Load Status Constants

Constant Value Description
AVKeyValueStatusCancelled 4 Indicates that the attempt to load the property was cancelled.
AVKeyValueStatusFailed 3 Indicates that the attempt to load the property failed.
AVKeyValueStatusLoaded 2 Indicates that the property is ready for use.
AVKeyValueStatusLoading 1 Indicates that the property is not fully loaded.
AVKeyValueStatusUnknown 0 Indicates that the property status is unknown.

This class has no sub classes.

Some methods using this class:

Some examples which use this class:


The items on this page are in the following plugins: MBS AVFoundation Plugin.


AVMutableAudioMixMBS   -   AVMutableCompositionTrackMBS





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