I had a wrong assumption that AMD’s H.264 video encoder MFT (and other Media Foundation primitives) are not based on AMF SDK. There were some references to ATI Technologies in the binary (AMDh264Enc64.dll) and most importantly I was unable to change tracing level of the MFT component on runtime. It was a guess that if AMF runtime is shared when MFT is loaded then change of tracing level would affect the MFT, which was not the case (or I did it wrong). Then the MFT DLL does not have direct reference to AMF runtime amfrt64.dll.
However an attempt to use AMD hardware video encoder incorrectly revealed its AMF base:
2018-10-02 11:14:52.434 7128 [AMFEncoderVCE] Error: …\runtime\src\components\EncoderVCE\EncoderVCEImpl.cpp(3057):Assertion failed:Surface format is not supported
2018-10-02 11:14:52.434 7128 [AMF MFT AMFEngine] Error: …\runtime\src\mft\mft-framework\Engine.cpp(348):AMFEngine(0)::SubmitInput(): SubmitInput() failed, AMF_RESULT(AMF_SURFACE_FORMAT_NOT_SUPPORTED)
2018-10-02 11:14:52.434 7128 [AMFAsyncMFTBase] Error: …\runtime\src\mft\mft-framework\AsyncMFTBase.cpp(1103):AsyncMFTBase(0)::ProcessInput(): SubmitInput() failed, AMF_RESULT(AMF_SURFACE_FORMAT_NOT_SUPPORTED)
Apparently the encoder MFT implementation is built over AMF and VCE. With a static link to AMF runtime perhaps.
Bonus picture (from True Audio Next and Multimedia AMD APIs in game and VR application development) suggests that AMD MFT shares the runtime with other consumers, which seems to be not exactly accurate: