Class: AVPlayerItemOutput
Overview
The AVPlayerItemOutput class is an abstract class that defines the common interface for moving samples from an asset to an AVPlayer object. You do not create instances of this class directly but instead use one of the concrete subclasses that manage specific types of assets.
Direct Known Subclasses
Instance Attribute Summary (collapse)
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- suppressesPlayerRendering
A Boolean indicating whether the player object renders the receiver’s output.
Instance Method Summary (collapse)
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- itemTimeForHostTime:
Converts a host time (specified in seconds) to the item’s timebase.
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- itemTimeForMachAbsoluteTime:
Converts a Mach host time to the item’s timebase.
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
- (Boolean) suppressesPlayerRendering
A Boolean indicating whether the player object renders the receiver’s output. When the value of this property is NO (the default), the player object handles the rendering of the receiver’s associated output. You can change the value of this property to YES if you want to suppress the rendering of the media data associated with this object.
Instance Method Details
- (CMTime) itemTimeForHostTime(hostTimeInSeconds)
Converts a host time (specified in seconds) to the item’s timebase. The timestamp associated with a CADisplayLink object represents the time of the most recent screen refresh, which is usually a time in the past. If you want to find the time associated with the next screen refresh, you need to increment the timestamp by the value in the display link’s duration property.
- (CMTime) itemTimeForMachAbsoluteTime(machAbsoluteTime)
Converts a Mach host time to the item’s timebase.