Instance Property

outputFileType

The type of file written by the session.

Declaration

var outputFileType: AVFileType? { get set }

Discussion

The value is a UTI string corresponding to the file type to use when writing the asset. For a list of constants specifying UTIs for standard file types, see AVFoundation Constants.

You can observe this property using Key-value observing.

Special Considerations

You must set a value for this property.

See Also

Configuring Output

var outputURL: URL?

The URL of the export session’s output.

var supportedFileTypes: [AVFileType]

An array containing the types of files the session can write.

var fileLengthLimit: Int64

The file length that the output of the session should not exceed.

var timeRange: CMTimeRange

The time range exported from the source.

var metadata: [AVMetadataItem]?

The metadata written to the output file by the export session.

var metadataItemFilter: AVMetadataItemFilter?

Specifies a filter object used during export to determine which metadata items to transfer from the source asset.

var audioMix: AVAudioMix?

The parameters for audio mixing and an indication whether to enable nondefault audio mixing for export.

var audioTimePitchAlgorithm: AVAudioTimePitchAlgorithm

A processing algorithm used to manage audio pitch for scaled audio edits.

var shouldOptimizeForNetworkUse: Bool

A Boolean value that indicates whether to optimize the movie should for network use.

var videoComposition: AVVideoComposition?

The instructions for video composition, and indicates whether video composition is enabled for export.

var customVideoCompositor: AVVideoCompositing?

The custom video compositor instance used, if any.

var canPerformMultiplePassesOverSourceMediaData: Bool

A Boolean value that indicates whether the export session can perform multiple passes over the source media to achieve better results.

var directoryForTemporaryFiles: URL?

A directory that is suitable for containing temporary files generated during the export process.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

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