| UID | title | description | helpviewer_keywords | old-location | tech.root | ms.assetid | ms.date | ms.keywords | req.header | req.include-header | req.target-type | req.target-min-winverclnt | req.target-min-winversvr | req.kmdf-ver | req.umdf-ver | req.ddi-compliance | req.unicode-ansi | req.idl | req.max-support | req.namespace | req.assembly | req.type-library | req.lib | req.dll | req.irql | targetos | req.typenames | req.redist | ms.custom | f1_keywords | dev_langs | topic_type | api_type | api_location | api_name | ||||||||||||||||||||||||
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NF:mfobjects.IMFMediaType.GetRepresentation |
IMFMediaType::GetRepresentation (mfobjects.h) |
Retrieves an alternative representation of the media type. Currently only the DirectShow AM_MEDIA_TYPE structure is supported. |
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mf\imfmediatype_getrepresentation.htm |
mf |
2135ff86-a3b6-4e1c-a9de-867f4828f008 |
12/05/2018 |
2135ff86-a3b6-4e1c-a9de-867f4828f008, AM_MEDIA_TYPE_REPRESENTATION, FORMAT_MFVideoFormat, FORMAT_VideoInfo, FORMAT_VideoInfo2, GetRepresentation, GetRepresentation method [Media Foundation], GetRepresentation method [Media Foundation],IMFMediaType interface, IMFMediaType interface [Media Foundation],GetRepresentation method, IMFMediaType.GetRepresentation, IMFMediaType::GetRepresentation, mf.imfmediatype_getrepresentation, mfobjects/IMFMediaType::GetRepresentation |
mfobjects.h |
Mfidl.h |
Windows |
Windows Vista [desktop apps \| UWP apps] |
Windows Server 2008 [desktop apps \| UWP apps] |
Mfuuid.lib |
Windows |
19H1 |
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Retrieves an alternative representation of the media type. Currently only the DirectShow AM_MEDIA_TYPE structure is supported.
GUID that specifies the representation to retrieve. The following values are defined.
| Value | Meaning |
|---|---|
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Convert the media type to a DirectShow AM_MEDIA_TYPE structure. The method selects the most appropriate format structure (pbFormat). |
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Convert the media type to a DirectShow AM_MEDIA_TYPE structure with an MFVIDEOFORMAT format structure. |
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Convert the media type to a DirectShow AM_MEDIA_TYPE structure with a VIDEOINFOHEADER format structure. |
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Convert the media type to a DirectShow AM_MEDIA_TYPE structure with a VIDEOINFOHEADER2 format structure. |
Receives a pointer to a structure that contains the representation. The method allocates the memory for the structure. The caller must release the memory by calling IMFMediaType::FreeRepresentation.
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
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The method succeeded. |
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The details of the media type do not match the requested representation. |
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The media type is not valid. |
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The media type does not support the requested representation. |
If you request a specific format structure in the guidRepresentation parameter, such as VIDEOINFOHEADER, you might lose some of the format information.
You can also use the MFInitAMMediaTypeFromMFMediaType function to convert a Media Foundation media type into a DirectShow media type.
This interface is available on the following platforms if the Windows Media Format 11 SDK redistributable components are installed:
- Windows XP with Service Pack 2 (SP2) and later.
- Windows XP Media Center Edition 2005 with KB900325 (Windows XP Media Center Edition 2005) and KB925766 (October 2006 Update Rollup for Windows XP Media Center Edition) installed.