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IMFPMediaPlayer::FrameStep method (mfplay.h)

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[The feature associated with this page, MFPlay, is a legacy feature. It has been superseded by MediaPlayer and IMFMediaEngine. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer and IMFMediaEngine instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

Steps forward one video frame.

Syntax

HRESULT FrameStep();

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code Description
S_OK
 The method succeeded.
MF_E_INVALIDREQUEST
 Cannot frame step. Reasons for this error code include:
  • There is no media item queued for playback.
  • The current media item does not contain video.
MF_E_SHUTDOWN
 The object's Shutdown method was called.
MF_E_UNSUPPORTED_RATE
 The media source does not support frame stepping, or the current playback rate is negative.

Remarks

This method completes asynchronously. When the operation completes, the application's IMFPMediaPlayerCallback::OnMediaPlayerEvent callback method is invoked. The event type is MFP_EVENT_TYPE_FRAME_STEP.

The player object does not support frame stepping during reverse playback (that is, while the playback rate is negative).

Requirements

Requirement Value
Minimum supported client Windows 7 [desktop apps only]
Minimum supported server Windows Server 2008 R2 [desktop apps only]
Target Platform Windows
Header mfplay.h

See also

IMFPMediaPlayer

Using MFPlay for Audio/Video Playback