IMFMediaEngineEx::GetStreamAttribute method

Gets a stream-level attribute from the media resource.

Syntax

HRESULT GetStreamAttribute(
  [in]  DWORD       dwStreamIndex,
  [in]  REFGUID     guidMFAttribute,
  [out] PROPVARIANT *pvValue
);

Parameters

dwStreamIndex [in]

The zero-based index of the stream. To get the number of streams, call IMFMediaEngineEx::GetNumberOfStreams.

guidMFAttribute [in]

The attribute to query. Possible values are listed in the following topics:

• Stream Descriptor Attributes
• Media Type Attributes

pvValue [out]

A pointer to a PROPVARIANT that receives the value. The method fills the PROPVARIANT with a copy of the stored value. Call PropVariantClear to free the memory allocated by the method.

Return value

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Requirements

See also

IMFMediaEngineEx