IMediaStreamFilter::ReferenceTimeToStreamTime method (amstream.h)

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4/26/2023

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 This interface is deprecated. New applications should not use it.

The ReferenceTimeToStreamTime method converts a reference time to stream time.

Syntax

HRESULT ReferenceTimeToStreamTime(
  [in, out] REFERENCE_TIME *pTime
);

Parameters

[in, out] pTime

On input, specifies the reference time to convert. On output, contains the equivalent stream time.

Return value

Returns an HRESULT value. Possible values include the following.

Return code	Description
S_FALSE	The graph does not have a reference clock.
S_OK	Success.

Remarks

Stream time equals the current reference time minus the reference time when the graph last started running.

Requirements

Requirement	Value
Target Platform	Windows
Header	amstream.h

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