IAMTimelineObj::FixTimes 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 FixTimes method rounds the specified start and stop times to the nearest frame boundaries, as defined by the parent group's frame rate setting.

Syntax

HRESULT FixTimes(
   REFERENCE_TIME *pStart,
   REFERENCE_TIME *pStop
);

Parameters

pStart

Pointer to a variable that contains the start time, in 100-nanosecond units. If the call succeeds, this variable is set to the rounded time.

pStop

Pointer to a variable that contains the stop time, in 100-nanosecond units. If the call succeeds, this variable is set to the rounded time.

Return value

Returns S_OK if successful, or E_NOTINTREE if the object is not part of a group.

Remarks

During rendering, DES rounds the object's start and stop times to the nearest frame boundary. However, DES does not overwrite the object's times. If you change the group frame rate, the rounded times are always calculated from the original times. For more information, see Time in DirectShow Editing Services.

Use this method to determine accurate start and stop times in the rendered project. For example, you should seek to the rounded times, rather than the object's original start and stop times. Call IAMTimelineObj::GetStartStop to obtain the original times, and pass those values to FixTimes.

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

IAMTimelineObj Interface

Error and Success Codes