DM8148 JPEG YUV422 encode

I want to encode JPEG YUV422 format on DM8148 (IPNC RDK DM8127).
But MJPEG encoder returns a error.

It seems MCFW supports only YUV420.

Is there any way to encode JPEG YUV422?

FYI:

Source\ipnc_rdk\ipnc_mcfw\mcfw\src_bios6\links_m3video\codec_utils\utils_encdec.h

static inline UInt32 Utils_encdecMapFVID2XDMChromaFormat(UInt32 chromaFormat)
{
    UTILS_assert((chromaFormat == FVID2_DF_YUV420SP_UV) ||
                 (chromaFormat == FVID2_DF_YUV420SP_VU));
    return (XDM_YUV_420SP);
}

When I removed YUV check code above, MJPEG encoder returned "internal error".

 [m3video] 12779:!ERROR!:ENCLINK::links_m3video/iva_enc/encLink_jpeg.c:[252]::INTERNAL ERROR:-1
 [m3video] ALGPROCESS FAILED 
 [m3video] JPEG Extended error 8000

Regards,