[FFmpeg-trac] #161(undetermined:new): QT PNG / PNG 24bpp INTERLACED with PAETH filter - broken output

[FFmpeg]

#161: QT PNG / PNG 24bpp INTERLACED with PAETH filter - broken output
--------------------------+--------------------------
 Reporter:  ami_stuff     |        Type:  defect
   Status:  new           |    Priority:  normal
Component:  undetermined  |     Version:  unspecified
 Keywords:                |  Blocked By:
 Blocking:                |  Reproduced:  0
 Analyzed:  0             |
--------------------------+--------------------------
 issue 1428

 https://roundup.libav.org/file531/Test_24bpp_interlaced_paeth.png

 {{{
 Author: ami_stuff       Date: 2009-09-28.21:59:07

 Attached file is PNG 24bpp INTERLACED with PAETH filter, decodes
 incorrectly.

 This file decodes correctly with IrfanView/XnView/ImageMagick/Firefox.

 PS. The same problem happens also with interlaced 1bpp (NONE, SUB or PAETH
 filter) and 8bpp (only with PAETH filter) images.

 --------

 C:\>ffmpeg -i Test_24bpp_interlaced_paeth.png
 FFmpeg version SVN-r20060, Copyright (c) 2000-2009 Fabrice Bellard, et al.
   built on Sep 27 2009 13:07:58 with gcc 4.2.4
   configuration: --enable-memalign-hack --prefix=/mingw --cross-
 prefix=i686-ming
 w32- --cc=ccache-i686-mingw32-gcc --target-os=mingw32 --arch=i686
 --cpu=i686 --e
 nable-avisynth --enable-gpl --enable-zlib --enable-bzlib --enable-libgsm
 --enabl
 e-libfaad --enable-pthreads --enable-libvorbis --enable-libtheora
 --enable-libsp
 eex --enable-libmp3lame --enable-libopenjpeg --enable-libxvid --enable-
 libschroe
 dinger --enable-libx264
   libavutil     50. 3. 0 / 50. 3. 0
   libavcodec    52.36. 0 / 52.36. 0
   libavformat   52.39. 0 / 52.39. 0
   libavdevice   52. 2. 0 / 52. 2. 0
   libswscale     0. 7. 1 /  0. 7. 1
 Input #0, image2, from 'Test_24bpp_interlaced_paeth.png':
   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
     Stream #0.0: Video: png, rgb24, 1024x768, 25 tbr, 25 tbn, 25 tbc
 At least one output file must be specified
 }}}

 {{{
 Author: cehoyos         Date: 2009-09-28.22:57:39

 Output looks funny.
 }}}

 {{{
 Author: ami_stuff       Date: 2009-11-07.03:20:01

 I uploaded QT PNG (PAETH INTERLACED) file with the same problem to
 "qt_png_paeth_interlaced" directory.
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/161>
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