[FFmpeg-trac] #5200(avcodec:new): gif encoder: support transparency

[FFmpeg]

#5200: gif encoder: support transparency
----------------------------------+-------------------------------------
             Reporter:  Colorama  |                     Type:  defect
               Status:  new       |                 Priority:  important
            Component:  avcodec   |                  Version:
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
----------------------------------+-------------------------------------
 the output gif file from "ffmpeg -i go.mov -pix_fmt pal8 go.gif"
 conversion is not transparent.

 {{{
 A:\>ffmpeg -i go.mov
 ffmpeg version N-77085-g21fbc41 Copyright (c) 2000-2015 the FFmpeg
 developers
   built with gcc 5.2.0 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-avisynth --enable-bzlib --enable
 -fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass
 --enable-libbluray --enable-libbs2b
  --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme
 --enable-libgsm --enable-libilbc --e
 nable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-
 libopencore-amrwb --enable-libopenjpe
 g --enable-libopus --enable-librtmp --enable-libschroedinger --enable-
 libsoxr --enable-libspeex --enable-libth
 eora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc
 --enable-libvo-amrwbenc --enable-libvorbis
 --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264
 --enable-libx265 --enable-libxavs --enab
 le-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
   libavutil      55. 10.100 / 55. 10.100
   libavcodec     57. 16.101 / 57. 16.101
   libavformat    57. 19.100 / 57. 19.100
   libavdevice    57.  0.100 / 57.  0.100
   libavfilter     6. 20.100 /  6. 20.100
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'go.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     creation_time   : 2016-01-28 11:29:10
   Duration: 00:00:02.00, start: 0.000000, bitrate: 791 kb/s
     Stream #0:0(eng): Video: qtrle (rle  / 0x20656C72), bgra, 200x200, 764
 kb/s, SAR 1:1 DAR 1:1, 25 fps, 25 t
 br, 25 tbn, 25 tbc (default)
     Metadata:
       creation_time   : 2016-01-28 11:29:11
       handler_name    : ╬сЁрсюЄўшъ яёхтфюэшьют Apple
       encoder         : ┬┐├М├Л├ПтАб╦Ж├Л╦З
       timecode        : 00:00:00:00
     Stream #0:1(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
     Metadata:
       creation_time   : 2016-01-28 11:29:12
       handler_name    : ╬сЁрсюЄўшъ яёхтфюэшьют Apple
       timecode        : 00:00:00:00
 At least one output file must be specified
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5200>
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