ICodecAPI::GetDefaultValue method (strmif.h)
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The GetDefaultValue method gets the default value of a codec property.
Syntax
HRESULT GetDefaultValue(
[in] const GUID *Api,
[out] VARIANT *Value
);
Parameters
[in] Api
Pointer to a GUID that specifies the property. For a list of standard codec properties, see Codec API Properties.
[out] Value
Pointer to a VARIANT that receives the default value. The caller must free the VARIANT by calling VariantClear.
Return value
This method can return one of these values.
| Return code | Description |
|---|---|
|
The method succeeded. |
|
The specified property does not have a default value. |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP with SP2 [desktop apps | UWP apps] |
| Minimum supported server | Windows Server 2003 R2 [desktop apps | UWP apps] |
| Target Platform | Windows |
| Header | strmif.h (include Dshow.h) |
| Library | Strmiids.lib |