Trying to watch something over the Mezzmo Web service, get a "TRANSCODE FAILED" for certain content

ffmpeg version N-78742-gf477849 Copyright (c) 2000-2017 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 55. 74.100 / 55. 74.100
libavcodec 57.103.100 / 57.103.100
libavformat 57. 76.100 / 57. 76.100
libavdevice 57. 7.100 / 57. 7.100
libavfilter 6.100.100 / 6.100.100
libswscale 4. 7.102 / 4. 7.102
libswresample 2. 8.100 / 2. 8.100
Input #0, mpeg, from 'pipe:':
Duration: N/A, start: 0.045500, bitrate: N/A
Stream #0:0[0x1bf]: Data: dvd_nav_packet
Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, top first), 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
Stream #0:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
Codec AVOption x264opts (x264 options) specified for output file #0 (H:\Video\Recorded TV\Transcoded\64BCB691-F930-4325-BAF2-D963EB44E3E8\Video\1019-fake_mp4-h264_qsv-aac-sn.mzt) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
Codec AVOption partitions (A comma-separated list of partitions to consider. Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all) specified for output file #0 (H:\Video\Recorded TV\Transcoded\64BCB691-F930-4325-BAF2-D963EB44E3E8\Video\1019-fake_mp4-h264_qsv-aac-sn.mzt) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
Stream mapping:
Stream #0:1 -> #0:0 (mpeg2video (native) -> h264 (h264_qsv))
Stream #0:2 -> #0:1 (ac3 (native) -> aac (native))
Incompatible pixel format 'yuv420p' for codec 'h264_qsv', auto-selecting format 'nv12'
[h264_qsv @ 000000000033efe0] No device available for encoder (device type qsv for codec h264_qsv).
[h264_qsv @ 000000000033efe0] Selected ratecontrol mode is not supported by the QSV runtime. Choose a different mode.
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed!

Is there something I should adjust?

"Incompatible pixel format 'yuv420p' for codec 'h264_qsv'" SAY WHAT??