IAMTimelineSrc::SetDefaultFPS method

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]

Note

[Deprecated. This API may be removed from future releases of Windows.]

 

The SetDefaultFPS method sets the source object's default frame rate.

Syntax

HRESULT SetDefaultFPS(
   double FPS
);

Parameters

FPS

Default frame rate, in frames per second.

Return value

Returns S_OK if successful, or E_INVALIDARG if the specified frame rate is less than zero.

Remarks

The render engine uses this value if it cannot determine the frame rate from the original source file.

Call this method only for source files without a predefined frame rate. For bitmap and JPEG files, the default frame rate is zero, which causes the source to be rendered as a still image. To use the image as the first frame in a DIB sequence set the frame rate to a value greater than zero. For more information, see Working with Sources.

Note

The header file Qedit.h is not compatible with Direct3D headers later than version 7.

 

Note

To obtain Qedit.h, download the Microsoft Windows SDK Update for Windows Vista and .NET Framework 3.0. Qedit.h is not available in the Microsoft Windows SDK for Windows 7 and .NET Framework 3.5 Service Pack 1.

 

Requirements

Requirement	Value
Header	Qedit.h
Library	Strmiids.lib

See also

IAMTimelineSrc Interface

Error and Success Codes