IMFSample::GetSampleDuration Method
Retrieves the duration of the sample.
Syntax
HRESULT GetSampleDuration(
[out] LONGLONG *phnsSampleDuration
);
Parameter
- phnsSampleDuration [out]
Receives the duration, in 100-nanosecond units.
Rückgabewert
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Rückgabecode | Beschreibung |
|---|---|
| S_OK | The method succeeded. |
| MF_E_NO_SAMPLE_DURATION | The sample does not have a specified duration. |
Hinweise
If the sample contains more than one buffer, the duration includes the data from all of the buffers.
If the retrieved duration is zero, or if the method returns MF_E_NO_SAMPLE_DURATION, the duration is unknown. In that case, it might be possible to calculate the duration from the media type—for example, by using the video frame rate or the audio sampling rate.
This interface is available on the following platforms if the Windows Media Format 11 SDK redistributable components are installed:
- Windows XP mit Service Pack 2 (SP2) und höher.
- Windows XP Media Center Edition 2005 with KB900325 (Windows XP Media Center Edition 2005) and KB925766 (Oktober 2006 Updaterollup für Windows XP Media Center Edition) installed.
Anforderungen
Mindestens unterstützter Client |
Windows Vista |
Mindestens unterstützter Server |
Windows Server 2008 |
Header |
Mfobjects.h (include Mfidl.h) |
Bibliothek |
Mfuuid.lib |