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IWMWriterAdvanced interface (wmsdkidl.h)

[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The IWMWriterAdvanced interface provides advanced writing functionality.

This interface exists for every instance of the writer object. To obtain a pointer to this interface, call QueryInterface on the writer object.

Inheritance

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

Methods

The IWMWriterAdvanced interface has these methods.

 
IWMWriterAdvanced::AddSink

The AddSink method adds a writer sink to receive writer output. The Windows Media Format SDK supports file sinks, which create ASF files on disk; network sinks, which stream ASF content across a network; and push sinks, which deliver ASF content to other media servers. To create a sink object, call one of the following functions:_
IWMWriterAdvanced::GetSink

The GetSink method retrieves a writer sink object. Used in conjunction with IWMWriterAdvanced::GetSinkCount, this method can be used to enumerate the sinks associated with a writer object.
IWMWriterAdvanced::GetSinkCount

The GetSinkCount method retrieves the number of writer sinks associated with the writer object.
IWMWriterAdvanced::GetStatistics

The GetStatistics method retrieves statistics describing the current writing operation.
IWMWriterAdvanced::GetSyncTolerance

The GetSyncTolerance method retrieves the amount of time during which the inputs can fall out of synchronization before the samples are discarded.
IWMWriterAdvanced::GetWriterTime

The GetWriterTime method retrieves the clock time that the writer is working to.
IWMWriterAdvanced::IsRealTime

The IsRealTime method ascertains whether the writer is running in real time.
IWMWriterAdvanced::RemoveSink

The RemoveSink method removes a writer sink object.
IWMWriterAdvanced::SetLiveSource

The SetLiveSource method sets a flag indicating whether the source is live.
IWMWriterAdvanced::SetSyncTolerance

The SetSyncTolerance method sets the amount of time that the inputs can fall out of synchronization before the samples are discarded.
IWMWriterAdvanced::WriteStreamSample

The WriteStreamSample method writes a stream sample directly into an ASF file, bypassing the normal compression procedures.

Requirements

Requirement Value
Target Platform Windows
Header wmsdkidl.h

See also

IWMWriter Interface

IWMWriterAdvanced2 Interface

Interfaces

Writer Object

Writing ASF Files