|Microsoft DirectX 9.0|
The SetStreamNumber method specifies which stream to read from the source file.
object.SetStreamNumber( Val As Long )
The stream number, from the set of streams matching the media type of the parent group.
If the method fails, an error is raised, and Err.Number can be set to the following value:
|E_INVALIDARG||The Val parameter is less than zero.|
The Val parameter specifies a stream number from the set of streams that matches the parent group's media type, not from the entire set of streams in the source file. For example, suppose that a file contains two video streams and two audio streams. If the AMTimelineSrc object is inside a video group, setting Val to 0 selects the first video stream. The caller is responsible for specifying a valid stream number.
The stream number defaults to zero.