IMFSinkWriter::BeginWriting Method

Initializes the sink writer for writing.

Syntax

public:
HRESULT BeginWriting()  

Return value

Type: HRESULT 

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return codes

Refer to Media Foundation return codes.

Remarks

Call this method after you configure the input streams and before you send any data to the sink writer.

You must call BeginWriting before calling any of the following methods:

• IMFSinkWriter::Finalize
• IMFSinkWriter::Flush
• IMFSinkWriter::NotifyEndOfSegment
• IMFSinkWriter::PlaceMarker
• IMFSinkWriter::SendStreamTick
• IMFSinkWriter::WriteSample

The underlying media sink must have at least one input stream. Otherwise, BeginWriting returns MF_E_INVALIDREQUEST. To add input streams, call the IMFSinkWriter::AddStream method.

If BeginWriting succeeds, any further calls to BeginWriting return MF_E_INVALIDREQUEST.

This interface is available on Windows Vista if Platform Update Supplement for Windows Vista is installed.

Requirements

Header: Declared in mfreadwrite.h.