Transcode error 109

When I try and view some video files on my TV via mezzmo: LG TV (2015 models)
The TV reports the message "unable to play" file and Mezzmo does not attempt to pre-transcode the file.
Additionally, If I manually transcode the file via the mezzmo server ui, the TV is still unable to play the file.

Here is the ffmpeg infor for the file.
Note the line near the end
<MEZZMO>: Child process ended with code: 109, ExitCode=1

Code:

ffmpeg version N-90389-g247cdc2 Copyright (c) 2000-2018 the FFmpeg developers built with gcc 4.9.2 (GCC) configuration: --arch=x86_64 --target-os=mingw32 --cross-prefix=x86_64-w64-mingw32- --enable-static --disable-shared --enable-zlib --disable-postproc --prefix=/home/peter/ffmpeg/build/gpl64 --enable-libmp3lame --enable-libx264 --enable-gpl --extra-libs='-lx264 -lpthread -lstdc++' --enable-runtime-cpudetect --extra-cflags=-I/home/peter/cc32/include --extra-ldflags=-L/home/peter/cc64/lib --pkg-config=pkg-config --pkg-config-flags=--static --disable-w32threads --enable-libvpx --enable-libvorbis --enable-libtheora --enable-libx265 --enable-cuda --enable-cuvid --enable-dxva2 --enable-libmfx --enable-nvenc --enable-gnutls --extra-libs='-lz -lnettle -lhogweed -lgmp -lidn -lws2_32 -lcrypt32' libavutil 56. 11.100 / 56. 11.100 libavcodec 58. 14.100 / 58. 14.100 libavformat 58. 10.100 / 58. 10.100 libavdevice 58. 2.100 / 58. 2.100 libavfilter 7. 13.100 / 7. 13.100 libswscale 5. 0.102 / 5. 0.102 libswresample 3. 0.101 / 3. 0.101 Input #0, matroska,webm, from 'E:\Park.720p.HEVC.x265-MeGusta.mkv': Metadata: ENCODER : Lavf58.30.100 Duration: 00:27:16.80, start: 0.000000, bitrate: 508 kb/s Stream #0:0: Video: hevc (Main 10), yuv420p10le(tv), 1280x720 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 1k tbn, 25 tbc (default) Metadata: BPS-eng : 1896105 DURATION-eng : 00:27:16.800000000 NUMBER_OF_FRAMES-eng: 40920 NUMBER_OF_BYTES-eng: 387943179 _STATISTICS_WRITING_APP-eng: mkvmerge v47.0.0 ('Black Flag') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2020-10-19 20:19:03 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES ENCODER : Lavc58.55.100 libx265 DURATION : 00:27:16.800000000 Stream #0:1(eng): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s Metadata: BPS-eng : 192000 DURATION-eng : 00:27:16.800000000 NUMBER_OF_FRAMES-eng: 51150 NUMBER_OF_BYTES-eng: 39283200 _STATISTICS_WRITING_APP-eng: mkvmerge v47.0.0 ('Black Flag') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2020-10-19 20:19:03 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES DURATION : 00:27:16.800000000 At least one output file must be specified <MEZZMO>: Child process ended with code: 109, ExitCode=1 ---> DB Level Info: 93, 2 ---> Frame rate: 25.00 ---> Aspect ratio: 16:9 PAR=1:1 ---> Duration: 00:27:16