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ICodecAPI::IsModifiable method (strmif.h)

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[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 IsModifiable method queries whether a codec property can be changed, given the codec's current configuration.

Syntax

HRESULT IsModifiable(
  [in] const GUID *Api
);

Parameters

[in] Api

Pointer to a GUID that specifies the property. For a list of standard codec properties, see Codec API Properties.

Return value

This method can return one of these values.

Return code Description
S_FALSE
 The value of this property cannot be changed.
S_OK
 The value of this property can be changed.

Remarks

Any errors besides those in the previous table indicate an inability to process the call.

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

See also

Codec API Reference

Encoder API

ICodecAPI