MediaSDK : Chroma 4:1:1 (YUV411) JPEG Encoding

As per the JPEG manual ("mediasdkjpeg-man.pdf"), ENCODE is supported for Chroma 4:1:1 (Page 6 of 9),

However, there is hardly any reference to the support in the sample (sample_encode.sln).

What I am trying to figure out is which FourCC enum in mfxStructures.h should be used to represent Chroma 4:1:1 (YUV411).

MFX_FOURCC_UYVY represents YUV422.

MFX_FOURCC_NV12 can be used for YUV420.

But which FourCC enum represents YUV411 ?

And is it actually supported as claimed in the documentation?