python gif压缩_Python的问题，调整大小的GIF动画

I'm want to resize animated GIF with save animate. I'm try use PIL and PythonMagickWand (ImageMagick) and with some GIF's get bad frame. When I'm use PIL, it mar frame in read frame. For test, I'm use this code:

from PIL import Image

im = Image.open('d:/box_opens_closes.gif')

im.seek(im.tell()+1)

im.seek(im.tell()+1)

im.seek(im.tell()+1)

im.show()

When I'm use MagickWand with this code:

wand = NewMagickWand()

MagickReadImage(wand, 'd:/Box_opens_closes.gif')

MagickSetLastIterator(wand)

length = MagickGetIteratorIndex(wand)

MagickSetFirstIterator(wand)

for i in range(0, length+1):

MagickSetIteratorIndex(wand,i)

MagickScaleImage(wand, 87, 58)

MagickWriteImages(wand, 'path', 1)

My GIF where I'm get bad frame this: test gif

In GIF editor software, all frames are ok. Where is the problem? Thanks.

解决方案

I'm complete this. Must use:

wand2 = MagickCoalesceImages(wand)

MagickWriteImages(wand2, 'save_path', 1)