IltmmMediaInfo::get_StreamSubtypeName

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#include "ltmm.h"

C Syntax	HRESULT IltmmMediaInfo_get_StreamSubtypeName(pMediaInfo, SubtypeName)
C++ Syntax	HRESULT get_StreamTypeName(SubtypeName)

IltmmMediaInfo *pMediaInfo;	/* pointer to an interface */
BSTR *SubtypeName;	/* pointer to a string */

Retrieves the name of the subtype of the current stream in the source media file.

Parameter	Description
pMediaInfo	Pointer to an IltmmMediaInfo Interface.
SubtypeName	Pointer to a string to be updated with the name of the subtype of the current stream.

Returns

S_OK	The function was successful.
<> S_OK	An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation.

Comments

Call SysFreeString to free the memory allocated for the string when it is no longer needed.

To get the number of the current stream, call IltmmMediaInfo::get_CurrentStream.

To set the current stream, call IltmmMediaInfo::put_CurrentStream. Once the current stream has been set, information about that stream can be obtained by calling any of the following functions:

IltmmMediaInfo::get_StreamDuration

IltmmMediaInfo::get_StreamMediaType

IltmmMediaInfo::get_StreamSubtype

IltmmMediaInfo::get_StreamSubtypeName

IltmmMediaInfo::get_StreamType

IltmmMediaInfo::get_StreamTypeName

Required DLLs and Libraries

LTMM

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64

See Also

Elements:	IltmmMediaInfo::get_StreamMediaType, IltmmMediaInfo::put_CurrentStream, IltmmMediaInfo::get_CurrentStream, IltmmMediaInfo::get_StreamSubtype, IltmmMediaInfo::get_StreamType, IltmmMediaInfo::get_StreamTypeName, IltmmMediaInfo::get_OutputStreams, IltmmMediaInfo::get_StreamDuration
Topics:	Multimedia Function Group Media File Information

Example

For a C example, refer to Retrieving Media File Information for C.

For a C++ example, refer to Retrieving Media File Information for C++.