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IWMPropertyVault interface

The IWMPropertyVault interface provides methods to store and retrieve properties. Currently, you can use this interface to set properties associated with variable bit rate (VBR) encoding. The generic nature of IWMPropertyVault allows for its use in other situations in future versions of the Format SDK.

IWMPropertyVault is exposed by stream configuration objects. To obtain a pointer to IWMPropertyVault, you must call the QueryInterface method of one of the other interfaces of an existing stream configuration object.

Members

The IWMPropertyVault interface inherits from the IUnknown interface. IWMPropertyVault also has these types of members:

Methods

The IWMPropertyVault interface has these methods.

MethodDescription
Clear

Removes all items from the property vault.

CopyPropertiesFrom

Copies all of the properties from another property vault.

GetPropertyByIndex

Retrieves a property from the vault by its index value.

GetPropertyByName

Retrieves a property from the vault by its name.

GetPropertyCount

Retrieves the total number of properties in the vault.

SetProperty

Adds a property to the vault, or changes the value of an existing property.

 

The following interfaces can be obtained by using the QueryInterface method of this interface.

InterfaceIID
IWMMediaProps IID_IWMMediaProps
IWMStreamConfig IID_IWMStreamConfig
IWMStreamConfig2 IID_IWMStreamConfig2
IWMStreamConfig3 IID_IWMStreamConfig3
IWMVideoMediaProps (on video streams only)IID_IWMVideoMediaProps

 

See also

Interfaces
Stream Configuration Object