AVAssetExportSession Class

Definition

Encapsulates the transcoding of an AVAsset instance to another format.

[Foundation.Register("AVAssetExportSession", true)]
[ObjCRuntime.Unavailable(ObjCRuntime.PlatformName.WatchOS, ObjCRuntime.PlatformArchitecture.All, null)]
public class AVAssetExportSession : Foundation.NSObject
type AVAssetExportSession = class
    inherit NSObject
Inheritance
AVAssetExportSession
Attributes

Constructors

AVAssetExportSession(AVAsset, AVAssetExportSessionPreset)

Creates an export session from an AVAsset and a preset.

AVAssetExportSession(AVAsset, String)

Creates an export session from an AVAsset and a preset name.

AVAssetExportSession(IntPtr)

A constructor used when creating managed representations of unmanaged objects; Called by the runtime.

AVAssetExportSession(NSObjectFlag)

Constructor to call on derived classes to skip initialization and merely allocate the object.

Properties

AllExportPresets

The available export presets.

Asset

The AVAsset being exported.

AudioMix

The AVAudioMix for this AVAssetExportSession.

AudioTimePitchAlgorithm

The time-pitch algorithm used.

CanPerformMultiplePassesOverSourceMediaData

Gets or sets a Boolean value that controls whether the export session is able to improve results by performing multiple passes over the source media.

Class (Inherited from NSObject)
ClassHandle

The handle for this class.

CustomVideoCompositor

The custom video compositor, if any, used during export.

DebugDescription

A developer-meaningful description of this object.

(Inherited from NSObject)
Description

Description of the object, the Objective-C version of ToString.

(Inherited from NSObject)
DirectoryForTemporaryFiles

Gets or sets the directory in which to store temporary files that are created while exporting.

Error

Gets the error that occurred, if one occurred.

EstimatedOutputFileLength

Gets the estimated size, in bytes, of the exported file.

FileLengthLimit

File limit

Handle

Handle (pointer) to the unmanaged object representation.

(Inherited from NSObject)
IsDirectBinding (Inherited from NSObject)
IsProxy (Inherited from NSObject)
MaxDuration

Maximum asset duration.

Metadata

Gets or sets the metadata to write to the output stream.

MetadataItemFilter

Gets or sets the filter to use to determine which source item metadata should be exported.

OutputFileType

Gets or sets the type of the output file.

OutputUrl

Gets or sets the URL to which to write the exported data.

Preset1280x720

Represents the value associated with the constant AVAssetExportPreset1280x720

Preset1920x1080

Represents the value associated with the constant AVAssetExportPreset1920x1080.

Preset3840x2160

Represents the value associated with the constant AVAssetExportPreset3840x2160.

Preset640x480

Represents the value associated with the constant AVAssetExportPreset640x480

Preset960x540

Represents the value associated with the constant AVAssetExportPreset960x540

PresetAppleM4A

Represents the value associated with the constant AVAssetExportPresetAppleM4A

PresetHevc1920x1080

Represents the value associated with the constant AVAssetExportPresetHEVC1920x1080.

PresetHevc3840x2160

Represents the value associated with the constant AVAssetExportPresetHEVC3840x2160.

PresetHevcHighestQuality

Represents the value associated with the constant AVAssetExportPresetHEVCHighestQuality.

PresetHighestQuality

Represents the value associated with the constant AVAssetExportPresetHighestQuality

PresetLowQuality

Represents the value associated with the constant AVAssetExportPresetLowQuality

PresetMediumQuality

Represents the value associated with the constant AVAssetExportPresetMediumQuality

PresetName

Name of the preset.

PresetPassthrough

Represents the value associated with the constant AVAssetExportPresetPassthrough

Progress

Gets a floating point value in [0,1] that indicates the export progress.

RetainCount

Returns the current Objective-C retain count for the object.

(Inherited from NSObject)
Self (Inherited from NSObject)
ShouldOptimizeForNetworkUse

Gets or sets a Boolean value that controls whether the exported AV content will be optimized for transmission over a network.

Status

Gets the status of the export session.

Superclass (Inherited from NSObject)
SuperHandle

Handle used to represent the methods in the base class for this NSObject.

(Inherited from NSObject)
SupportedFileTypes

Gets an array of values that identify the supported file types that the session can produce.

TimeRange

Gets or sets the time range of data to export from the source.

VideoComposition

Gets or sets a value that controls how or if video compositing will be performed on the exported data.

Zone (Inherited from NSObject)

Methods

AddObserver(NSObject, NSString, NSKeyValueObservingOptions, IntPtr)

Registers an object for being observed externally (using NSString keyPath).   Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method.

(Inherited from NSObject)
AddObserver(NSObject, String, NSKeyValueObservingOptions, IntPtr)

Registers an object for being observed externally (using string keyPath).   Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method.

(Inherited from NSObject)
AddObserver(NSString, NSKeyValueObservingOptions, Action<NSObservedChange>)

Registers an object for being observed externally using an arbitrary method.

(Inherited from NSObject)
AddObserver(String, NSKeyValueObservingOptions, Action<NSObservedChange>)

Registers an object for being observed externally using an arbitrary method.

(Inherited from NSObject)
AwakeFromNib()

Called after the object has been loaded from the nib file. Overriders must call base.AwakeFromNib().

(Inherited from NSObject)
BeginInvokeOnMainThread(Action) (Inherited from NSObject)
BeginInvokeOnMainThread(Selector, NSObject)

Invokes asynchrously the specified code on the main UI thread.

(Inherited from NSObject)
Bind(NSString, NSObject, String, NSDictionary) (Inherited from NSObject)
Bind(String, NSObject, String, NSDictionary) (Inherited from NSObject)
BindingInfo(String) (Inherited from NSObject)
BindingOptionDescriptions(String) (Inherited from NSObject)
BindingValueClass(String) (Inherited from NSObject)
CancelExport()

Cancels exporting.

CommitEditing() (Inherited from NSObject)
CommitEditing(NSObject, Selector, IntPtr) (Inherited from NSObject)
ConformsToProtocol(IntPtr)

Invoked to determine if this object implements the specified protocol.

(Inherited from NSObject)
Copy()

Performs a copy of the underlying Objective-C object.

(Inherited from NSObject)
DangerousAutorelease() (Inherited from NSObject)
DangerousRelease() (Inherited from NSObject)
DangerousRetain() (Inherited from NSObject)
DetermineCompatibilityOfExportPreset(String, AVAsset, AVFileTypes, Action<Boolean>)

Determines if a preset is compatible with an asset and output type, passing the result to .

DetermineCompatibilityOfExportPreset(String, AVAsset, String, Action<Boolean>)

Determines whether the specified preset is compatible with the asset and output file type.

DetermineCompatibilityOfExportPresetAsync(String, AVAsset, AVFileTypes)

Asynchronously determines if a preset is compatible with an asset and output type, returning a task that tells if it is.

DetermineCompatibilityOfExportPresetAsync(String, AVAsset, String)

Determines whether the specified preset is compatible with the asset and output file type.

DetermineCompatibleFileTypes(Action<String[]>)

Produces the list of compatible file types with this export session.

DetermineCompatibleFileTypesAsync()

Produces the list of compatible file types with this export session.

DidChange(NSKeyValueChange, NSIndexSet, NSString)

Indicates a change occurred to the indexes for a to-many relationship.

(Inherited from NSObject)
DidChange(NSString, NSKeyValueSetMutationKind, NSSet) (Inherited from NSObject)
DidChangeValue(String)

Indicates that a change occurred on the specified key.

(Inherited from NSObject)
Dispose()

Releases the resources used by the NSObject object.

(Inherited from NSObject)
Dispose(Boolean)

Releases the resources used by the NSObject object.

(Inherited from NSObject)
DoesNotRecognizeSelector(Selector)

Indicates that this object does not recognize the specified selector.

(Inherited from NSObject)
Equals(NSObject) (Inherited from NSObject)
Equals(Object) (Inherited from NSObject)
ExportAsynchronously(Action)

Starts the export process.

ExportPresetsCompatibleWithAsset(AVAsset)

Exports the presets compatible with the given asset.

ExportTaskAsync()

Starts the export process.

ExposedBindings() (Inherited from NSObject)
FromAsset(AVAsset, String)

Creates a new AVAssetExportSession from the specified asset, with the specified preset name.

GetBindingInfo(NSString) (Inherited from NSObject)
GetBindingOptionDescriptions(NSString) (Inherited from NSObject)
GetBindingValueClass(NSString) (Inherited from NSObject)
GetDictionaryOfValuesFromKeys(NSString[])

Retrieves the values of the specified keys.

(Inherited from NSObject)
GetHashCode()

Generates a hash code for the current instance.

(Inherited from NSObject)
GetMethodForSelector(Selector) (Inherited from NSObject)
GetNativeField(String) (Inherited from NSObject)
GetNativeHash() (Inherited from NSObject)
Init() (Inherited from NSObject)
InitializeHandle(IntPtr) (Inherited from NSObject)
InitializeHandle(IntPtr, String) (Inherited from NSObject)
Invoke(Action, Double) (Inherited from NSObject)
Invoke(Action, TimeSpan) (Inherited from NSObject)
InvokeOnMainThread(Action) (Inherited from NSObject)
InvokeOnMainThread(Selector, NSObject)

Invokes synchrously the specified code on the main UI thread.

(Inherited from NSObject)
IsEqual(NSObject) (Inherited from NSObject)
IsKindOfClass(Class) (Inherited from NSObject)
IsMemberOfClass(Class) (Inherited from NSObject)
MarkDirty()

Promotes a regular peer object (IsDirectBinding is true) into a toggleref object.

(Inherited from NSObject)
MutableCopy()

Creates a mutable copy of the specified NSObject.

(Inherited from NSObject)
ObjectDidEndEditing(NSObject) (Inherited from NSObject)
ObserveValue(NSString, NSObject, NSDictionary, IntPtr)

Indicates that the value at the specified keyPath relative to this object has changed.

(Inherited from NSObject)
PerformSelector(Selector) (Inherited from NSObject)
PerformSelector(Selector, NSObject) (Inherited from NSObject)
PerformSelector(Selector, NSObject, Double)

Invokes the selector on the current instance and if the obj is not null, it passes this as its single parameter.

(Inherited from NSObject)
PerformSelector(Selector, NSObject, Double, NSString[]) (Inherited from NSObject)
PerformSelector(Selector, NSObject, NSObject) (Inherited from NSObject)
PerformSelector(Selector, NSThread, NSObject, Boolean) (Inherited from NSObject)
PerformSelector(Selector, NSThread, NSObject, Boolean, NSString[]) (Inherited from NSObject)
PrepareForInterfaceBuilder() (Inherited from NSObject)
RemoveObserver(NSObject, NSString)

Stops the specified observer from receiving further notifications of changed values for the specified keyPath.

(Inherited from NSObject)
RemoveObserver(NSObject, NSString, IntPtr)

Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context.

(Inherited from NSObject)
RemoveObserver(NSObject, String)

Stops the specified observer from receiving further notifications of changed values for the specified keyPath.

(Inherited from NSObject)
RemoveObserver(NSObject, String, IntPtr)

Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context.

(Inherited from NSObject)
RespondsToSelector(Selector)

Whether this object recognizes the specified selector.

(Inherited from NSObject)
SetNativeField(String, NSObject) (Inherited from NSObject)
SetNilValueForKey(NSString)

Sets the value of the specified key to null.

(Inherited from NSObject)
SetValueForKey(NSObject, NSString)

Sets the value of the property specified by the key to the specified value.

(Inherited from NSObject)
SetValueForKeyPath(IntPtr, NSString)

A constructor used when creating managed representations of unmanaged objects; Called by the runtime.

(Inherited from NSObject)
SetValueForKeyPath(NSObject, NSString)

Sets the value of a property that can be reached using a keypath.

(Inherited from NSObject)
SetValueForUndefinedKey(NSObject, NSString)

Indicates an attempt to write a value to an undefined key. If not overridden, raises an NSUndefinedKeyException.

(Inherited from NSObject)
SetValuesForKeysWithDictionary(NSDictionary)

Sets the values of this NSObject to those in the specified dictionary.

(Inherited from NSObject)
ToString()

Returns a string representation of the value of the current instance.

(Inherited from NSObject)
Unbind(NSString) (Inherited from NSObject)
Unbind(String) (Inherited from NSObject)
ValueForKey(NSString)

Returns the value of the property associated with the specified key.

(Inherited from NSObject)
ValueForKeyPath(NSString)

Returns the value of a property that can be reached using a keypath.

(Inherited from NSObject)
ValueForUndefinedKey(NSString)

Indicates an attempt to read a value of an undefined key. If not overridden, raises an NSUndefinedKeyException.

(Inherited from NSObject)
WillChange(NSKeyValueChange, NSIndexSet, NSString)

Indicates that the values of the specified indices in the specified key are about to change.

(Inherited from NSObject)
WillChange(NSString, NSKeyValueSetMutationKind, NSSet) (Inherited from NSObject)
WillChangeValue(String)

Indicates that the value of the specified key is about to change.

(Inherited from NSObject)

Extension Methods

ObjectDidBeginEditing(NSObject, INSEditor)
ObjectDidEndEditing(NSObject, INSEditor)
GetValidModes(NSObject, NSFontPanel)
ValidateToolbarItem(NSObject, NSToolbarItem)
GetDebugDescription(INSObjectProtocol)
AcceptsPreviewPanelControl(NSObject, QLPreviewPanel)
BeginPreviewPanelControl(NSObject, QLPreviewPanel)
EndPreviewPanelControl(NSObject, QLPreviewPanel)
GetAccessibilityCustomRotors(NSObject)

Gets the array of UIAccessibilityCustomRotor objects appropriate for this object.

SetAccessibilityCustomRotors(NSObject, UIAccessibilityCustomRotor[])

Sets the array of UIAccessibilityCustomRotor objects appropriate for this object.

Applies to

See also