# uname -a
Linux raspberrypi 6.1.0-rpi7-rpi-2712 #1 SMP PREEMPT Debian 1:6.1.63-1+rpt1 (2023-11-24) aarch64 GNU/Linux

# vcgencmd version
2023/10/18 18:30:17
Copyright (c) 2012 Broadcom
version c2da2ae7 (release) (embedded)

# ffmpeg -i filename.mkv
ffmpeg version 5.1.4-0+rpt1+deb12u1 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 12 (Debian 12.2.0-14)
  configuration: --prefix=/usr --extra-version=0+rpt1+deb12u1 --toolchain=hardened --incdir=/usr/include/aarch64-linux-gnu --enable-gpl --disable-stripping --disable-mmal --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libglslang --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librist --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sand --enable-sdl2 --disable-sndio --enable-libjxl --enable-neon --enable-v4l2-request --enable-libudev --enable-epoxy --libdir=/usr/lib/aarch64-linux-gnu --arch=arm64 --enable-pocketsphinx --enable-librsvg --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-libplacebo --enable-librav1e --enable-shared
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
Input #0, matroska,webm, from 'filename.mkv':
  Metadata:
    title           : Filename...
    encoder         : libebml v1.4.4 + libmatroska v1.7.1
    creation_time   : 2023-03-07T11:09:04.000000Z
  Duration: 00:54:17.59, start: 0.000000, bitrate: 14623 kb/s
  Chapters:
    Chapter #0:0: start 0.000000, end 1224.000000
      Metadata:
        title           : Chapter 00
    Chapter #0:1: start 1224.000000, end 1656.000000
      Metadata:
        title           : Chapter 01
    Chapter #0:2: start 1656.000000, end 2299.000000
      Metadata:
        title           : Chapter 02
    Chapter #0:3: start 2299.000000, end 3189.000000
      Metadata:
        title           : Chapter 03
    Chapter #0:4: start 3189.000000, end 3257.588000
      Metadata:
        title           : Chapter 04
  Stream #0:0: Video: hevc (Main 10), yuv420p10le(tv, bt2020nc/bt2020/smpte2084), 3840x2160 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn (default)
    Metadata:
      BPS             : 13375533
      DURATION        : 00:54:17.588000000
      NUMBER_OF_FRAMES: 78104
      NUMBER_OF_BYTES : 5446497032
      _STATISTICS_WRITING_APP: mkvmerge v71.1.0 ('Fortitude') 64-bit
      _STATISTICS_WRITING_DATE_UTC: 2023-03-07 11:09:04
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    Side data:
      DOVI configuration record: version: 1.0, profile: 8, level: 6, rpu flag: 1, el flag: 0, bl flag: 1, compatibility id: 1
  Stream #0:1(ger): Audio: eac3, 48000 Hz, 5.1(side), fltp, 640 kb/s (default)
    Metadata:
      title           : German
      BPS             : 640000
      DURATION        : 00:52:49.536000000
      NUMBER_OF_FRAMES: 99048
      NUMBER_OF_BYTES : 253562880
      _STATISTICS_WRITING_APP: mkvmerge v71.1.0 ('Fortitude') 64-bit
      _STATISTICS_WRITING_DATE_UTC: 2023-03-07 11:09:04
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:2(eng): Audio: eac3, 48000 Hz, 5.1(side), fltp, 640 kb/s
    Metadata:
      title           : English
      BPS             : 640000
      DURATION        : 00:52:49.536000000
      NUMBER_OF_FRAMES: 99048
      NUMBER_OF_BYTES : 253562880
      _STATISTICS_WRITING_APP: mkvmerge v71.1.0 ('Fortitude') 64-bit
      _STATISTICS_WRITING_DATE_UTC: 2023-03-07 11:09:04
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:3(eng): Subtitle: subrip
    Metadata:
      BPS             : 78
      DURATION        : 00:52:28.278000000
      NUMBER_OF_FRAMES: 980
      NUMBER_OF_BYTES : 30953
      _STATISTICS_WRITING_APP: mkvmerge v71.1.0 ('Fortitude') 64-bit
      _STATISTICS_WRITING_DATE_UTC: 2023-03-07 11:09:04
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:4(eng): Subtitle: subrip (hearing impaired)
    Metadata:
      title           : SDH
      BPS             : 83
      DURATION        : 00:52:38.021000000
      NUMBER_OF_FRAMES: 1041
      NUMBER_OF_BYTES : 32982
      _STATISTICS_WRITING_APP: mkvmerge v71.1.0 ('Fortitude') 64-bit
      _STATISTICS_WRITING_DATE_UTC: 2023-03-07 11:09:04
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES