AVMutableMovieMBS.defaultMediaDataStorage as AVMediaDataStorageMBS

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	AVMovie	MBS AVFoundation Plugin	16.0	✅ Yes	❌ No	❌ No	✅ Yes	All

The default storage container for media data added to a movie.

The value of this property is an AVMediaDataStorage object that indicates where sample data that is added to a movie should be written, for any track for whose mediaDataStorage property is nil.
(Read and Write property)

AVMutableMovieMBS.interleavingPeriod as CMTimeMBS

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	AVMovie	MBS AVFoundation Plugin	16.0	✅ Yes	❌ No	❌ No	✅ Yes	All

A CMTime that indicates the duration for interleaving runs of samples of each track.

The default interleaving period is 0.5 seconds.
(Read and Write property)

AVMutableMovieMBS.modified as Boolean

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	AVMovie	MBS AVFoundation Plugin	16.0	✅ Yes	❌ No	❌ No	✅ Yes	All

Whether a movie has been modified.

The value of this property is a boolean that indicates whether the AVMutableMovie object has been modified since it was created, was last written, or had its modified state cleared via assignment Modified = false.
(Read and Write property)

AVMutableMovieMBS.preferredRate as Double

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	AVMovie	MBS AVFoundation Plugin	16.0	✅ Yes	❌ No	❌ No	✅ Yes	All

The natural rate at which the movie is to be played; often but not always 1.0.

(Read and Write property)

AVMutableMovieMBS.preferredTransform as CMTimeMBS

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	AVMovie	MBS AVFoundation Plugin	16.0	✅ Yes	❌ No	❌ No	✅ Yes	All

A CGAffineTransform indicating the transform specified in the movie's storage container as the preferred transformation of the visual media data for display purposes; the value is often but not always CGAffineTransformIdentity.

(Read and Write property)

AVMutableMovieMBS.preferredVolume as Double

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	AVMovie	MBS AVFoundation Plugin	16.0	✅ Yes	❌ No	❌ No	✅ Yes	All

The preferred volume of the audible media data of the movie; often but not always 1.0.

(Read and Write property)

AVMutableMovieMBS.timescale as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	AVMovie	MBS AVFoundation Plugin	16.0	✅ Yes	❌ No	❌ No	✅ Yes	All

For file types that contain a 'moov' atom, such as QuickTime Movie files, specifies the time scale of the movie.

The default movie time scale is 600. In certain cases, you may want to set this to a different value. For instance, a movie that contains a single audio track should typically have the movie time scale set to the media time scale of that track.

This property should be set on a new empty movie before any edits are performed on the movie.
(Read and Write property)