HRESULT 0xC00D36B7 (MF_E_UNSUPPORTED_REPRESENTATION): meaning

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Description:

the requested media-type representation is not available for this Media Foundation object.

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MF_E_NOT_INITIALIZED	MF_E_NO_MORE_TYPES

MF_E_UNSUPPORTED_REPRESENTATION

MF_E_UNSUPPORTED_REPRESENTATION is about converting or exposing a media type in a requested representation, not about decoding the media payload. A common API context is IMFMediaType::GetRepresentation, where the caller asks for an alternative structure identified by a representation GUID.

Check the representation GUID and the media type separately

Log the exact guidRepresentation and the media type major type and subtype.
Do not assume every IMFMediaType can be exported to every DirectShow-era format structure.
If a specific representation would discard format information, keep the Media Foundation attribute form or use a conversion helper designed for the required target structure.

Microsoft documents only specific representation values for GetRepresentation, including AM_MEDIA_TYPE_REPRESENTATION and selected video format structures. Wine's mfobjects.idl also exposes the representation and matching FreeRepresentation contract. A codec install or file repair will not make an arbitrary representation GUID valid.

Microsoft: IMFMediaType::GetRepresentation · Microsoft: Media Types · Wine: IMFMediaType interface definition

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