Logs of the command I ran to get the first 10 minutes

C:\Users\BigAppa\AppData\Roaming\youtube-dl>ffmpeg.exe -i test.mkv -ss 00:00:00 -to 00:10:00 -c copy "Faulty Download (first 10 minutes).mkv"
ffmpeg version git-2019-10-19-ed78ca4 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 9.2.1 (GCC) 20191010
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 35.101 / 56. 35.101
  libavcodec     58. 59.102 / 58. 59.102
  libavformat    58. 33.100 / 58. 33.100
  libavdevice    58.  9.100 / 58.  9.100
  libavfilter     7. 63.100 /  7. 63.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
[matroska,webm @ 000002c08a0d9e00] Element at 0x27b ending at 0x286 exceeds containing master element ending at 0x27f
[matroska,webm @ 000002c08a0d9e00] Duplicate element
[matroska,webm @ 000002c08a0d9e00] 0x00 at pos 178 (0xb2) invalid as first byte of an EBML number
[matroska,webm @ 000002c08a0d9e00] Duplicate element
[matroska,webm @ 000002c08a0d9e00] Element at 0x59 ending at 0x824dbb8c53abe6 exceeds containing master element ending at 0x1405
[matroska,webm @ 000002c08a0d9e00] Element at 0x68 ending at 0x534dbb8e541b exceeds containing master element ending at 0x1414
[matroska,webm @ 000002c08a0d9e00] Element at 0x77 ending at 0xbbdb9 exceeds containing master element ending at 0x1423
[matroska,webm @ 000002c08a0d9e00] Element at 0x27b ending at 0x286 exceeds containing master element ending at 0x27f
[h264 @ 000002c08a0eeb80] top block unavailable for requested intra mode -1
[h264 @ 000002c08a0eeb80] error while decoding MB 1 0, bytestream 34025
[h264 @ 000002c08a0eeb80] concealing 3600 DC, 3600 AC, 3600 MV errors in I frame
[aac @ 000002c08a0dc380] Sample rate index in program config element does not match the sample rate index configured by the container.
[aac @ 000002c08a0dc380] decode_pce: Input buffer exhausted before END element found
[matroska,webm @ 000002c08a0d9e00] Could not find codec parameters for stream 2 (Video: h264, none, 1280x720): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, matroska,webm, from 'test.mkv':
  Metadata:
    title           : videolectures/mp4/targetupsc_courses/targetupsc_1/20190918_1173_1710.smil
    encoder         : Lavf58.33.100
  Duration: 01:45:15.97, start: 0.000000, bitrate: 929 kb/s
    Stream #0:0: Video: h264 (High), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 24 fps, 24 tbr, 1k tbn, 48 tbc (default)
    Stream #0:1: Audio: aac (LTP), 44100 Hz, mono, fltp (default)
    Stream #0:2: Video: h264, none, 1280x720, SAR 1:1 DAR 16:9, 24 fps, 24 tbr, 1k tbn, 2k tbc (default)
    Stream #0:3: Audio: aac, 44100 Hz, mono, fltp (default)
File 'test2.mkv' already exists. Overwrite? [y/N] y
Output #0, matroska, to 'test2.mkv':
  Metadata:
    title           : videolectures/mp4/targetupsc_courses/targetupsc_1/20190918_1173_1710.smil
    encoder         : Lavf58.33.100
    Stream #0:0: Video: h264 (High) (H264 / 0x34363248), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 24 fps, 24 tbr, 1k tbn, 1k tbc (default)
    Stream #0:1: Audio: aac (LTP) ([255][0][0][0] / 0x00FF), 44100 Hz, mono, fltp (default)
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=14352 fps=0.0 q=-1.0 Lsize=   66542kB time=00:09:59.95 bitrate= 908.6kbits/s speed=1.48e+03x
video:62748kB audio:3619kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.263289%