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IltmmMediaInfo::get_OutputStreams

#include "ltmm.h"

C Syntax	HRESULT IltmmMediaInfo_get_OutputStreams(pMediaInfo, pVal)
C++ Syntax	HRESULT get_OutputStreams(pVal)

IltmmMediaInfo *pMediaInfo;	pointer to an interface
long *pVal;	pointer to a variable

Retrieves the number of output streams available in the source media file.

Parameter	Description
pMediaInfo	Pointer to an IltmmMediaInfo Interface.
pVal	Pointer to a variable to be updated with the number of output streams in the source media file.

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

The current source media file is the file for which the IltmmMediaInfo interface/object gets information. To set the current source media file, call IltmmMediaInfo::put_SourceFile.

The number of streams obtained by this function can be used to iterate through all streams, acquiring information on each.

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

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

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

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++.

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