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Apple Developer Docs

AVFoundation / AVMutableVideoComposition / init(propertiesOfAsset:prototypeInstruction:)

init(propertiesOfAsset:prototypeInstruction:)

Declaration

init(propertiesOfAsset asset: AVAsset, prototypeInstruction: AVVideoCompositionInstruction)

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AVFoundationInitializer

iOS 13.0+iPadOS 13.0+Mac Catalyst 13.1+macOS 10.15+tvOS 13.0+

Built on 2026-06-12 · Snapshot snapshot-20260612-beta.1 (macOS 27.0) · Commit fba13e1 · by @g-cqd · based on Apple Developer Documentation