DNXHD to PNG Conversion FFMPEG

ffmpeg -i "/Users/Moody/Desktop/PLATES/input.mov" -y -r 24 -vf setsar=1:1 -sws_flags +accurate_rnd+bitexact+full_chroma_int+full_chroma_inp -pix_fmt yuv422p10le -start_number 1001 "/Users/Moody/Desktop/PLATES/output.%04d.png"
ffmpeg version 2.8.1-tessus Copyright (c) 2000-2015 the FFmpeg developers
  built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)
  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --as=yasm --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzmq --enable-version3 --disable-ffplay --disable-indev=qtkit --disable-indev=x11grab_xcb
  libavutil      54. 31.100 / 54. 31.100
  libavcodec     56. 60.100 / 56. 60.100
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 40.101 /  5. 40.101
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/Moody/Desktop/PLATES/input.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2017-07-31 07:21:38
    timecode        : 15:19:37:16
  Duration: 00:00:02.88, start: 0.000000, bitrate: 116396 kb/s
    Stream #0:0(eng): Video: dnxhd (AVdn / 0x6E645641), yuv422p(tv), 1920x1080, 116391 kb/s, 24 fps, 24 tbr, 24k tbn, 24k tbc (default)
    Metadata:
      creation_time   : 2017-07-31 07:21:38
      handler_name    : Apple Alias Data Handler
      encoder         : Avid DNxHD Codec
    Stream #0:1(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
    Metadata:
      creation_time   : 2017-07-31 07:21:39
      handler_name    : Apple Alias Data Handler
      timecode        : 15:19:37:16
[Parsed_setsar_0 @ 0x7fe7a7100000] num:den syntax is deprecated, please use num/den or named options instead
Incompatible pixel format 'yuv422p10le' for codec 'png', auto-selecting format 'rgb48be'
Output #0, image2, to '/Users/Moody/Desktop/PLATES/output.png':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    timecode        : 15:19:37:16
    encoder         : Lavf56.40.101
    Stream #0:0(eng): Video: png, rgb48be, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 24 fps, 24 tbn, 24 tbc (default)
    Metadata:
      creation_time   : 2017-07-31 07:21:38
      handler_name    : Apple Alias Data Handler
      encoder         : Lavc56.60.100 png
Stream mapping:
  Stream #0:0 -> #0:0 (dnxhd (native) -> png (native))
Press [q] to stop, [?] for help
frame=   69 fps=3.9 q=-0.0 Lsize=N/A time=00:00:02.87 bitrate=N/A
video:689741kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Macsimilian:~ Moody$