[FFmpeg-user] create an animated GIF from set of images

[Eugene Dzhurinsky]

On Thu, May 16, 2013 at 11:57:50PM +0300, Andrey Utkin wrote:
> In both cases i get same error
> pipe:: Input/output error
> But in both cases i get 2 frames written to output and output files valid.
> If you have other results, check your ffmpeg to be of recent version.

I believe that I/O error comes from the fact that stream was closed.

In my case for GIF I can see:

===================================================================================

ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
  built on May 10 2013 16:31:05 with gcc 4.8.0 (GCC) 20130502 (prerelease)
  configuration: --prefix=/usr --disable-debug --disable-static --enable-avresample --enable-dxva2 --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-postproc --enable-runtime-cpudetect --enable-shared --enable-vdpau --enable-version3 --enable-x11grab
  libavutil      52. 18.100 / 52. 18.100
  libavcodec     54. 92.100 / 54. 92.100
  libavformat    54. 63.104 / 54. 63.104
  libavdevice    54.  3.103 / 54.  3.103
  libavfilter     3. 42.103 /  3. 42.103
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
[image2pipe @ 0xfb2140] Estimating duration from bitrate, this may be inaccurate
Input #0, image2pipe, from 'pipe:':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: png, pal8, 558x466, 10 fps, 10 tbr, 10 tbn, 10 tbc
[gif @ 0xfbbbc0] ERROR: gif only handles the rgb24 pixel format. Use -pix_fmt rgb24.
Output #0, gif, to 'test.gif':
  Metadata:
    encoder         : Lavf54.63.104
    Stream #0:0: Video: rawvideo, pal8, 558x466, q=2-31, 200 kb/s, 90k tbn, 10 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (png -> rawvideo)
Could not write header for output file #0 (incorrect codec parameters ?): Input/output error

===================================================================================

and resulting GIF is 0-sized.

ffmpeg version 1.2.1

-- 
Eugene N Dzhurinsky