[Image-SIG] 答复: gif convert png wrong

[宋立新（凡卓通讯）]

Also I found that GIMP does not work, but Adobe Image Ready work.

 

发件人: 宋立新（凡卓通讯） [mailto:songlixin at vanzotec.com] 
发送时间: 2011年12月20日 星期二 10:51
收件人: 'image-sig at python.org'
主题: gif convert png wrong

 

Hello All:

       I am writing a python tool that covert gif to png so it can be used
for android ROM customization.

            My script is after the text, but it doesn’t work for some gifs,
such as the one at:

 

                            ftp://help:help@222.68.182.226/gif2.gif

 

                   several frames are wrong(See png_ok and png_wrong)

 

                   And it’s not rare: 2 of my 7 gifs got wrong with the
scripts.

                   While a tool named: “Ulead GIF Animator 5” under
windows can convert it without problem.

                   

                   To be honest, imagemagick and another linux tool gif2png
also has the same problem. And Also AcdSee (Under Windows)!

                   I have no idea about this and I really wish to write a
tool to improve our efficiency.

                   Could some expert take a look on it?

         BR,

Lixin Song

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

#!/usr/bin/env python

# -*- coding: utf-8 -*-

 

import Image

 

im = Image.open('gif2.gif')

 

def iter_frames(im):

    try:

        i= 0

        while 1:

            im.seek(i)

            imframe = im.copy()

            if i == 0: 

                palette = imframe.getpalette()

            else:

                imframe.putpalette(palette)

            yield imframe

            i += 1

    except EOFError:

        pass

 

for i, frame in enumerate(iter_frames(im)):

    frame.save('test%d.png' % i,**frame.info)

 

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