| Microsoft DirectX 8.1 (C++) |
This interface is implemented on each output pin of the MPEG-2 Demultiplexer filter (Demux) and is used in program stream mode only. It is called by applications or other filters to associate the pin with a specified Stream ID and to inform the pin whether substream filtering is required on the stream. This interface is not exposed when the filter is playing back a file (pull-mode).
For transport streams, use the IMPEG2PIDMap interface.
In addition to the methods inherited from IUnknown, the IMPEG2StreamIdMap interface exposes the following methods.
| Method | Description |
| MapStreamId | Maps the Stream ID of an elementary stream within an MPEG-2 program stream to a media content type and substream filtering information. |
| UnmapStreamId | Unmaps the Stream ID mapping created in a previous call to MapStreamId. |
| EnumStreamIdMap | Returns a collection of all the mapped Stream IDs on this pin. |