Have you actually tried Egreat on the same equipment (HDMI cable+TV+possible AVR in the middle, etc)? If not, it is possible that you have a weak link in your whole chain that causes no image on TV as result. One of possible causes could be also HDMI bandwidth which is quite high on example you're talking about. What about frame rate of your content that produces no image - if its like 60fps, than it could easily be the bandwidth related problem in correlation with poor HDMI cable for example.
Here are the details of the movie, that works fine on Q5 Pro:
Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5.1@High
Codec ID : V_MPEGH/ISO/HEVC
Duration : 2 h 2 min
Bit rate : 14.2 Mb/s
Width : 3 840 pixels
Height : 1 600 pixels
Display aspect ratio : 2.40:1
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0 (Type 2)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.096
Stream size : 12.1 GiB (69%)
Writing library : x265 2.5+58-06979c042350:[Windows][GCC 6.2.1][64 bit] 10bit
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : PQ
Matrix coefficients : BT.2020 non-constant
Mastering display color primaries : Display P3
Mastering display luminance : min: 0.0000 cd/m2, max: 1000 cd/m2
Maximum Content Light Level : 1000 cd/m2
Maximum Frame-Average Light Level : 720 cd/m2