Class: AVAssetReaderTrackOutput

Inherits:
AVAssetReaderOutput show all

Overview

AVAssetReaderTrackOutput defines an interface for reading media data from a single AVAssetTrack object of an asset reader's asset.

Instance Attribute Summary (collapse)

Attributes inherited from AVAssetReaderOutput

#alwaysCopiesSampleData, #mediaType

Class Method Summary (collapse)

Instance Method Summary (collapse)

Methods inherited from AVAssetReaderOutput

#copyNextSampleBuffer

Methods inherited from NSObject

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Constructor Details

This class inherits a constructor from NSObject

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class NSObject

Instance Attribute Details

- (Hash) outputSettings (readonly)

The output settings used by the output. (read-only) The value is a dictionary that contains values for keys from either AVAudioSettings.h (linear PCM only) for audio tracks or for video tracks. A value of nil indicates that the output will return samples in their original format as stored in the target track.

Returns:

- (AVAssetTrack) track (readonly)

The track from which the receiver reads sample buffers. (read-only)

Returns:

Class Method Details

+ (AVAssetReaderTrackOutput) assetReaderTrackOutputWithTrack(track, outputSettings:outputSettings)

Returns an asset reader wrapping a specified track, with optional output settings.

Parameters:

  • track (AVAssetTrack) —

    The track from which the reader should source sample buffers.

  • outputSettings (Hash) —

    A dictionary of output settings to be used for sample output. Pass nil to receive samples as stored in the track.You use keys from one of AVAudioSettings.h, AVVideoSettings.h, or , depending on the media type and the output format you want. Initialization fails if the output settings cannot be used with the specified track.

Returns:

Instance Method Details

- (Object) initWithTrack(track, outputSettings:outputSettings)

Initializes an asset reader to wrap a specified track, with optional output settings.

Parameters:

  • track (AVAssetTrack) —

    The track from which the reader should source sample buffers.

  • outputSettings (Hash) —

    A dictionary of output settings to be used for sample output. Pass nil to receive samples as stored in the track.You use keys from one of AVAudioSettings.h, AVVideoSettings.h, or , depending on the media type and the output format you want. Initialization fails if the output settings cannot be used with the specified track.

Returns:

  • (Object) —

    An asset reader wrapping track, using the setting defined by outputSettings.