[FFmpeg-trac] #7536(ffplay:new): ffplay - "not implemented"-warnings flood the terminal

[FFmpeg]

#7536: ffplay - "not implemented"-warnings flood the terminal
--------------------------------+--------------------------------------
             Reporter:  Djfe    |                     Type:  defect
               Status:  new     |                 Priority:  normal
            Component:  ffplay  |                  Version:  git-master
             Keywords:          |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |
--------------------------------+--------------------------------------
 Summary of the bug:
 The apng files from this page (https://flif.info/animation.html) generate
 a (seemingly) endless output of
 {{{
  In-stream tag=[0][0][0][0] (0x00000000) len=0 is not implemented. Update
 your FFmpeg version to the newest one from Git. If the problem still
 occurs, it means that your file has a feature which has not been
 implemented.
 [apng @ 000001bc46816f80] If you want to help, upload a sample of this
 file to ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel
 mailing list. (ffmpeg-devel at ffmpeg.org)
 }}}

 Or rather only the cut off apng files cause this (the ones in the bottom
 row on the page)

 This only happens when I play them with ffplay. ffmpeg and ffprobe only
 output one warning (or error)

 How to reproduce:
 {{{
 PS C:\Users\Felix\Downloads> ffplay .\spinfox_cut53.png
 ffplay version N-91273-g67747c89ad Copyright (c) 2003-2018 the FFmpeg
 developers
   built with gcc 7.3.0 (GCC)
   configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
 bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass
 --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-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-
 nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
   libavutil      56. 18.102 / 56. 18.102
   libavcodec     58. 20.101 / 58. 20.101
   libavformat    58. 17.100 / 58. 17.100
   libavdevice    58.  4.101 / 58.  4.101
   libavfilter     7. 25.100 /  7. 25.100
   libswscale      5.  2.100 /  5.  2.100
   libswresample   3.  2.100 /  3.  2.100
   libpostproc    55.  2.100 / 55.  2.100
 [apng @ 000001bc46816f80] In-stream tag=[233]_X[199] (0xC7585FE9)
 len=447601638 is not implemented. Update your FFmpeg version to the newest
 one from Git. If the problem still occurs, it means that your file has a
 feature which has not been implemented.
 [apng @ 000001bc46816f80] If you want to help, upload a sample of this
 file to ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel
 mailing list. (ffmpeg-devel at ffmpeg.org)
 Input #0, apng, from '.\spinfox_cut53.png':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: apng, rgba(pc), 148x148, 20 fps, 20 tbr, 100k tbn,
 100k tbc
 [apng @ 000001bc46816f80] In-stream tag=[0][0][0][0] (0x00000000) len=0 is
 not implemented. Update your FFmpeg version to the newest one from Git. If
 the problem still occurs, it means that your file has a feature which has
 not been implemented.
 [apng @ 000001bc46816f80] If you want to help, upload a sample of this
 file to ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel
 mailing list. (ffmpeg-devel at ffmpeg.org)
 [apng @ 000001bc4681e5c0] chunk too big
 }}}

 Direct links to the files:
 https://flif.info/example-animation/spinfox_cut15.png
 https://flif.info/example-animation/spinfox_cut33.png
 https://flif.info/example-animation/spinfox_cut53.png

 screenshot of my command line
 https://i.imgur.com/L1aUj4K.png

 This bug report is only about the endless command line spam.
 The warning is likely caused by the incomplete file (I guess) and
 therefore it's correct that it's shown; but it would be enough if it would
 be shown once.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7536>
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