mfx is a wrapper, so we need to know what format the video is in inside of it.
What does mediainfo say about the file? https://mediaarea.net/en/MediaInfo
What happen if you simply rename the file to .mp4 or .mkv?
Renaming to mkv or mp4 it spins for a while (media player) and then shows Video Problem error.
Info for file is:
General
Complete name : /Volumes/share/media_rw/sda2/Samples/MERIDIAN_SHR_C_EN-XX_US-NR_51_LTRT_UHD_20160909_OV_01.mxf.mp4
Format : MXF
Format version : 1.3
Format profile : OP-1a
Format settings : Closed / Complete
File size : 88.5 GiB
Duration : 11 min 58 s
Overall bit rate : 1 058 Mb/s
Encoded date : 2016-09-09 11:29:39.012
Writing application : Colorfront Transkoder 2016.0.0.29813.0
Writing library : Microsoft Windows 7 Professional Service Pack 1 (Build 7601) 2.7.3.0.1
Video
ID : 2
Format : JPEG 2000
Format profile : 206
Format settings, wrapping mode : Frame
Codec ID : 0D010301020C0100-040102020301017F
Duration : 11 min 58 s
Bit rate : 1 058 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate : 59.940 (60000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:2
Bit depth : 10 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 2.128
Stream size : 88.5 GiB (100%)
Title : Picture
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Other #1
ID : 1-Material
Type : Time code
Format : MXF TC
Time code of first frame : 00:00:17;12
Time code settings : Material Package
Time code, striped : Yes
Other #2
ID : 1-Source
Type : Time code
Format : MXF TC
Time code of first frame : 00:00:17;12
Time code settings : Source Package
Time code, striped : Yes