Microsoft DirectX 9.0

MSVidWebDVD.AudioStreamsAvailable Property

This topic applies to Windows XP Service Pack 1 only.

The AudioStreamsAvailable property retrieves the number of audio streams available in the current title.


VidWebDVD.AudioStreamsAvailable as Long


This property takes no parameters.

Return Values

Returns an integer value from 1 through 8 representing the number of audio streams available in the current title.

Error Codes

If the property fails, Err.Number may be set to one of the following values.

Value Description
E_UNEXPECTED Unspecified error.
E_NO_IDVD2_PRESENT Unspecified internal error.
E_NO_DVD_VOLUME No DVD available.
E_REGION_CHANGE_FAIL The DVD has the wrong region code for this machine.


This property is read-only with no default value. The primary use of multiple audio streams is to provide movie soundtracks in more than one language. Typically, not every title on a disc has all audio streams enabled. For example, the feature movie might have soundtracks in three different languages, but the trailers might have only an English soundtrack. Before a user can select a stream, the application must determine which streams are available within the current title. Note that particular streams are identified by an index from 0 through 7.

Discs generally present a menu showing the available soundtracks, which allows the user to select the audio stream to enable.


' Returning the property
lStreamsAvail = VidWebDVD.AudioStreamsAvailable

See Also