AVAssetReaderOutputMBS.alwaysCopiesSampleData as boolean

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	AVFoundation	MBS AVFoundation Plugin	13.2	✅ Yes	❌ No	❌ No	✅ Yes	All

Indicates whether the data in buffers gets copied before being vended.

When the value of this property is true, the output always vends a buffer with copied data—you can freely modify data in such buffers.

When the value of this property is false, the buffers vended may not be copied—such buffers may still be referenced by other entities. The result of modifying a buffer whose data hasn't been copied is undefined.
Requesting buffers whose data hasn't been copied when possible can lead to performance improvements.
The default value of this property is true.
Available in OS X v10.8 and later.
(Read and Write property)

AVAssetReaderOutputMBS.Handle as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	AVFoundation	MBS AVFoundation Plugin	13.2	✅ Yes	❌ No	❌ No	✅ Yes	All

The internal object reference.

(Read and Write property)

AVAssetReaderOutputMBS.mediaType as string

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	AVFoundation	MBS AVFoundation Plugin	13.2	✅ Yes	❌ No	❌ No	✅ Yes	All

A string representing the media type of the track (or tracks) represented by the output. (read-only)

The value of this property is one of the media type strings defined in AVMediaFormat.h.
(Read only property)

AVAssetReaderOutputMBS.supportsRandomAccess as Boolean

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	AVFoundation	MBS AVFoundation Plugin	14.4	✅ Yes	❌ No	❌ No	✅ Yes	All

Indicates whether the asset reader output supports reconfiguration of the time ranges to read.

When the value of this property is true, the time ranges read by the asset reader output can be reconfigured during reading using the -resetForReadingTimeRanges method. This also prevents the attached AVAssetReader from progressing to AVAssetReaderStatusCompleted until markConfigurationAsFinal has been invoked.

The default value is false, which means that the asset reader output may not be reconfigured once reading has begin. When the value of this property is false, AVAssetReader may be able to read media data more efficiently, particularly when multiple asset reader outputs are attached.

This property may not be set after startReading has been called on the attached asset reader.
(Read and Write property)