IQualProp::get_AvgFrameRate method (amvideo.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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 get_AvgFrameRate method retrieves the actual average frame rate since streaming started.
Syntax
HRESULT get_AvgFrameRate(
int *piAvgFrameRate
);
Parameters
piAvgFrameRate
Pointer to a variable that receives the actual number of frames per second, multiplied by 100. For example, an average frame rate of 30 frames per second will be represented as 3000.
Return value
Returns an HRESULT value.
Remarks
The actual frame rate during playback might be less than the authored frame rate. For more information on actual versus authored frame rates, see the Remarks section for the VIDEOINFOHEADER structure.
Requirements
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | amvideo.h (include Dshow.h) |
| Library | Strmiids.lib |