[FFmpeg-trac] #7325(avcodec:new): PNG decoder not found in FFmpeg 4.0.2

[FFmpeg]

#7325: PNG decoder not found in FFmpeg 4.0.2
-------------------------------------+-------------------------------------
             Reporter:  Anatol       |                     Type:  defect
               Status:  new          |                 Priority:  important
            Component:  avcodec      |                  Version:  git-
             Keywords:               |  master
  png,codec,missing                  |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 PNG decoder not found in FFmpeg 4.0.2

 FFmpeg 4.0.2 fails to decode PNG files. Same behavior occurs on 3.4 and
 4.0 as well.
 FFmpeg 3.2 works fine with PNG.

 Cmd-line - ffmpeg -i 2.png -y a.jpg

 Source PNG file -
 https://bellard.org/bpg/2.png

 Full printout -
 ffmpeg version 4.0.2 Copyright (c) 2000-2018 the FFmpeg developers
   built with gcc 4.9.4 (Ubuntu 4.9.4-2ubuntu1~12.04)
   configuration: --prefix=/opt/ffmpeg-4.0.2 --libdir=/opt/ffmpeg-4.0.2/lib
 --shlibdir=/opt/ffmpeg-4.0.2/lib --extra-cflags='-static -static-libstdc++
 -static-libgcc -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
 -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC'
 --pkg-config-flags=--static --enable-gpl --enable-nonfree --enable-
 version3 --disable-devices --enable-indev=lavfi --enable-avfilter
 --enable-filter=movie --enable-postproc --enable-pthreads --enable-swscale
 --disable-bzlib --enable-libx264 --enable-libx265 --enable-libvpx
 --enable-libfdk-aac --enable-libmp3lame --enable-libgsm --enable-libtheora
 --enable-libvorbis --enable-libspeex --enable-libxvid --enable-
 libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-libass --enable-libfreetype --enable-fontconfig --enable-avisynth
 --disable-autodetect --disable-vdpau --extra-libs='-lm -ldl -lpthread -lz
 -lrt' --extra-cxxflags='-static -static-libstdc++ -static-libgcc'
   libavutil      56. 14.100 / 56. 14.100
   libavcodec     58. 18.100 / 58. 18.100
   libavformat    58. 12.100 / 58. 12.100
   libavdevice    58.  3.100 / 58.  3.100
   libavfilter     7. 16.100 /  7. 16.100
   libswscale      5.  1.100 /  5.  1.100
   libswresample   3.  1.100 /  3.  1.100
   libpostproc    55.  1.100 / 55.  1.100
 [png_pipe @ 0x4c70f80] 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 '2.png':
   Duration: N/A, bitrate: N/A
     Stream #0:0: Video: png, none, 25 tbr, 25 tbn, 25 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (? (?) -> mjpeg (native))
 Decoder (codec png) not found for input stream #0:0

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7325>
FFmpeg <https://ffmpeg.org>
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