No support PNG codecs

[elin72215]

Hi,
The image don't support some image codecs, like png.
Will this be supported?
I try to use a png file as a watermark of the video, but it shows "Decoder (codec png) not found for input stream #1:0".
And then I try to get the png info by command "ffmpeg -i logo.png", it shows follow:

ffmpeg version N-91067-g1c2e5fc Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.9) 20160609
  configuration: --enable-nonfree --disable-shared --enable-nvenc --enable-cuda --enable-cuvid --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-cflags=-I/usr/local/include --extra-ldflags=-L/usr/local/cuda/lib64
  libavutil      56. 18.102 / 56. 18.102
  libavcodec     58. 19.101 / 58. 19.101
  libavformat    58. 13.102 / 58. 13.102
  libavdevice    58.  4.100 / 58.  4.100
  libavfilter     7. 22.100 /  7. 22.100
  libswscale      5.  2.100 /  5.  2.100
  libswresample   3.  2.100 /  3.  2.100
[png_pipe @ 0x3ca5280] Could not find codec parameters for stream 0 (Video: png, none): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, png_pipe, from 'data/logo.png':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: png, none, 25 tbr, 25 tbn, 25 tbc
At least one output file must be specified

Will the image codecs be supported in the future?