IMFPresentationDescriptor::SelectStream method (mfidl.h)

Selects a stream in the presentation.


HRESULT SelectStream(
  [in] DWORD dwDescriptorIndex


[in] dwDescriptorIndex

The stream number to select, indexed from zero. To find the number of streams in the presentation, call IMFPresentationDescriptor::GetStreamDescriptorCount.

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.
dwDescriptorIndex is out of range.


If a stream is selected, the media source will generate data for that stream. The media source will not generated data for deselected streams. To deselect a stream, call IMFPresentationDescriptor::DeselectStream.

To query whether a stream is selected, call IMFPresentationDescriptor::GetStreamDescriptorByIndex.

This interface is available on the following platforms if the Windows Media Format 11 SDK redistributable components are installed:

  • Windows XP with Service Pack 2 (SP2) and later.
  • Windows XP Media Center Edition 2005 with KB900325 (Windows XP Media Center Edition 2005) and KB925766 (October 2006 Update Rollup for Windows XP Media Center Edition) installed.


Requirement Value
Minimum supported client Windows Vista [desktop apps | UWP apps]
Minimum supported server Windows Server 2008 [desktop apps | UWP apps]
Target Platform Windows
Header mfidl.h
Library Mfuuid.lib

See also


Presentation Descriptors