IAMTimelineSrc::SetMediaTimes 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 SetMediaTimes method sets the media stop and start times.

Syntax

HRESULT SetMediaTimes(
   REFERENCE_TIME Start,
   REFERENCE_TIME Stop
);

Parameters

Start

Media start time, in 100-nanosecond units.

Stop

Media stop time, in 100-nanosecond units.

Return value

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

The media times are the stop and start times relative to the original media file. Always set the media times when you add a video or audio source to the timeline. Otherwise, rendering problems might occur. The stop time must be greater than the start time.

To use a still frame from a video source, set the stop time to a fractional amount more than the start time, such as 100 nanoseconds. Setting them to the same value causes a rendering error.

If the timeline duration does not match the media duration, the source stretches or shrinks accordingly. This causes the clip to play slower or faster than the authored rate. (Pitch shifting will occur in an audio source.) For more information, see Time in DirectShow Editing Services.

You can specify the duration of the source file by calling the SetMediaLength method. If you set a media stop time that exceeds the duration, DES truncates the stop time.

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