[FFmpeg-trac] #1272(avcodec:new): Can't use image2pipe with PNG images

[FFmpeg]

#1272: Can't use image2pipe with PNG images
-------------------------------------+-------------------------------------
             Reporter:  eugeneware   |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  avcodec      |                  Version:
             Keywords:  png,         |  unspecified
  stream, image2pipe                 |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 When I run the following command

 $ cat file1.png file2.png | ffmpeg -y -f image2pipe -r 1 -vcodec png -i -
 out.mp4

  I get the following error.

 ffmpeg version 0.7.11, Copyright (c) 2000-2011 the FFmpeg developers
   built on Apr 25 2012 19:55:19 with clang 3.0 (tags/Apple/clang-211.10.1)
   configuration: --prefix=/opt/local --enable-gpl --enable-postproc
 --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis
 --enable-libtheora --enable-libdirac --enable-libschroedinger --enable-
 libopenjpeg --enable-libxvid --enable-libx264 --enable-libvpx --enable-
 libspeex --mandir=/opt/local/share/man --enable-shared --enable-pthreads
 --cc=/usr/bin/clang --arch=x86_64 --enable-yasm --enable-nonfree --enable-
 libfaac
   libavutil    50. 43. 0 / 50. 43. 0
   libavcodec   52.123. 0 / 52.123. 0
   libavformat  52.111. 0 / 52.111. 0
   libavdevice  52.  5. 0 / 52.  5. 0
   libavfilter   1. 80. 0 /  1. 80. 0
   libswscale    0. 14. 1 /  0. 14. 1
   libpostproc  51.  2. 0 / 51.  2. 0
 [image2pipe @ 0x7f9dd104ac00] max_analyze_duration 5000000 reached at
 5000000
 [image2pipe @ 0x7f9dd104ac00] Estimating duration from bitrate, this may
 be inaccurate
 Input #0, image2pipe, from 'pipe:':
   Duration: N/A, bitrate: N/A
     Stream #0.0: Video: png, 1 fps, 1 tbr, 1 tbn, 1 tbc
 [buffer @ 0x7f9dd0c32780] Invalid pixel format string '-1'
 Error opening filters!


 This is a long standing issue. I found an old patch and updated it to work
 with the latest version of ffmpeg in the git repository.

 Here's the fix:

 http://pastebin.com/5mTfGsdg

 You can use the following as example png files to replicate the issue:

 http://dl.dropbox.com/u/4763380/ffmpeg/file1.png
 http://dl.dropbox.com/u/4763380/ffmpeg/file2.png


 This problem has been hanging around for a long time. It would be great to
 finally get it patched into the main trunk.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1272>
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