AVAssetExportSession Class
Definition
Important
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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.NSObjecttype AVAssetExportSession = class
inherit NSObject- Inheritance
- 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) |
Obsolete.
(Inherited from NSObject)
|
| BindingInfo(String) |
Obsolete.
(Inherited from NSObject)
|
| BindingOptionDescriptions(String) |
Obsolete.
(Inherited from NSObject)
|
| BindingValueClass(String) |
Obsolete.
(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 |
| 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) |
Obsolete.
(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 |
| 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) |
Obsolete.
(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) |
Obsolete.
(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) |