IWMReaderNetworkConfig2::GetAcceleratedStreamingDuration method (wmsdkidl.h)
[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The GetAcceleratedStreamingDuration method retrieves the current accelerated streaming duration. This duration applies to the Fast Start feature of Windows Media Services, which enables content to be played quickly without waiting for lengthy initial buffering.
Syntax
HRESULT GetAcceleratedStreamingDuration(
[out] QWORD *pcnsAccelDuration
);
Parameters
[out] pcnsAccelDuration
Pointer to a QWORD that receives the accelerated streaming duration, in 100-nanosecond units. This is the amount of data at the beginning of the content that is streamed at an accelerated rate. The default value is twice the buffering duration.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
|
NULL pointer argument. |
Remarks
When using Fast Start, the server running Windows Media Services will send some data at the beginning of the content at a faster rate than that specified by the bit rate of the content.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only],Windows Media Format 9 Series SDK, or later versions of the SDK |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | wmsdkidl.h (include Wmsdk.h) |
| Library | Wmvcore.lib; WMStubDRM.lib (if you use DRM) |