AVMutableVideoCompositionInstructionMBS.backgroundColor as Variant

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

The background color of the composition.

Value must be CGColorMBS.
Only solid BGRA colors are supported; patterns and other supported colors are ignored. If the rendered pixel buffer does not have alpha, the alpha value of the background color is ignored.

If the background color is nil, the video compositor uses a default background color of opaque black.
(Read and Write computed property)

AVMutableVideoCompositionInstructionMBS.Constructor

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

The constructor.

See also:

• Constructor(other as AVVideoCompositionInstructionMBS)

AVMutableVideoCompositionInstructionMBS.Constructor(other as AVVideoCompositionInstructionMBS)

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	AVFoundation	MBS AVFoundation Plugin	15.1	✅ Yes	❌ No	❌ No	✅ Yes	All

The copy constructor to initialize with a mutable copy of the given object.

See also:

• Constructor

AVMutableVideoCompositionInstructionMBS.enablePostProcessing 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 post processing is required for the video composition instruction.

If no post processing is required for the whole duration of the video composition instruction, set this property to false to make the composition process more efficient.

The value is true by default.
(Read and Write computed property)

AVMutableVideoCompositionInstructionMBS.layerInstructions as AVVideoCompositionLayerInstructionMBS()

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

An array of instances of AVVideoCompositionLayerInstruction that specify how video frames from source tracks should be layered and composed.

Tracks are layered in the composition according to the top-to-bottom order of the layerInstructions array; the track with trackID of the first instruction in the array will be layered on top, with the track with the trackID of the second instruction immediately underneath, and so on.

If the property value is nil, the output is a fill of the background color.

AVMutableVideoCompositionInstructionMBS.setLayerInstructions(items() as AVVideoCompositionLayerInstructionMBS)

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

Sets an array of instances of AVVideoCompositionLayerInstruction that specify how video frames from source tracks should be layered and composed.

Tracks are layered in the composition according to the top-to-bottom order of the layerInstructions array; the track with trackID of the first instruction in the array will be layered on top, with the track with the trackID of the second instruction immediately underneath, and so on.

If the property value is nil, the output is a fill of the background color.

Some examples using this method:

• /AVFoundation/Add text to video
• /AVFoundation/Merge and Crop Videos
• /AVFoundation/Overlay video track with picture

AVMutableVideoCompositionInstructionMBS.timeRange as CMTimeRangeMBS

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

The time range during which the instruction is effective.

If the time range is invalid, the video compositor will ignore it.
(Read and Write computed property)