[FFmpeg-trac] #2556(undetermined:new): Broken PNG decode

[FFmpeg]

#2556: Broken PNG decode
-------------------------------------+-------------------------------------
               Reporter:  ubitux     |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:             |  undetermined
  unspecified                        |               Keywords:  png
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 {{{
 % ./ffplay -f lavfi testsrc=s=800x600 -vf
 'movie=Stopwatch-256.png[watermark];[in][watermark]overlay=10:10 [out]'
 ffplay version N-52955-g8749649 Copyright (c) 2003-2013 the FFmpeg
 developers
   built on May 10 2013 18:56:27 with gcc 4.8.0 (GCC) 20130502 (prerelease)
   configuration: --enable-gpl --enable-version3 --enable-fontconfig
 --enable-libfreetype --enable-libmp3lame --enable-libvorbis --enable-
 libxvid --enable-libx264 --enable-libvpx --enable-libtheora --enable-
 x11grab --enable-libopenjpeg --enable-libass --enable-libmodplug --enable-
 libv4l2 --cc=colorgcc --samples=/home/ubitux/fate-samples
 --prefix=/tmp/ffinstall --disable-runtime-cpudetect --enable-libcelt
 --enable-libopencv --enable-frei0r --enable-libcaca --enable-libiec61883
 --enable-libopencore-amrwb --enable-libopencore-amrnb --enable-libopus
 --enable-libpulse --enable-libspeex --enable-libquvi --enable-memory-
 poisoning
   libavutil      52. 30.100 / 52. 30.100
   libavcodec     55.  7.100 / 55.  7.100
   libavformat    55.  4.101 / 55.  4.101
   libavdevice    55.  0.100 / 55.  0.100
   libavfilter     3. 63.101 /  3. 63.101
   libswscale      2.  3.100 /  2.  3.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
     nan A-V:  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0
 ^MInput #0, lavfi, from 'testsrc':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 320x240
 [SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
 [png @ 0x7fe548001ce0] Missing png signature
 [Parsed_movie_0 @ 0x7fe548004160] Decode error: Operation not permitted
 [png @ 0x7fe548001ce0] Missing png signature
 [Parsed_movie_0 @ 0x7fe548004160] Decode error: Operation not permitted
 [png @ 0x7fe548001ce0] Missing png signature
 [Parsed_movie_0 @ 0x7fe548004160] Decode error: Operation not permitted
 [png @ 0x7fe548001ce0] Missing png signature
 [Parsed_movie_0 @ 0x7fe548004160] Decode error: Operation not permitted
 [png @ 0x7fe548001ce0] Missing png signature
 [Parsed_movie_0 @ 0x7fe548004160] Decode error: Operation not permitted
 [png @ 0x7fe548001ce0] Missing png signature
 [Parsed_movie_0 @ 0x7fe548004160] Decode error: Operation not permitted
 [png @ 0x7fe548001ce0] Missing png signature
 [Parsed_movie_0 @ 0x7fe548004160] Decode error: Operation not permitted
 [png @ 0x7fe548001ce0] Missing png signature
 [Parsed_movie_0 @ 0x7fe548004160] Decode error: Operation not permitted
 [png @ 0x7fe548001ce0] Missing png signature
 [Parsed_movie_0 @ 0x7fe548004160] Decode error: Operation not permitted
 [png @ 0x7fe548001ce0] Missing png signature
 [...]
 }}}

 Works fine if converting that PNG to GIF first.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2556>
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