IMFSinkWriter::BeginWriting method
Initializes the sink writer for writing.
Syntax
HRESULT BeginWriting();
Parameters
This method has no parameters.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
|
The request is invalid. |
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
|
Minimum supported client |
Windows 7, Windows Vista and Platform Update Supplement for Windows Vista [desktop apps | Windows Store apps] |
|---|---|
|
Minimum supported server |
Windows Server 2008 R2 [desktop apps | Windows Store apps] |
|
Header |
|
See also