我的代码：
clip1 = VideoFileClip(changename).subclip(0,40)
clip2 = VideoFileClip(changename).subclip(int(duration/2-20), int(duration/2+20) )
clip3 = VideoFileClip(changename).subclip(duration-41,duration-1)
final_clip = concatenate_videoclips([clip1,clip2,clip3])
final_clip.resize(width=480).write_videofile(exportfile, fps=25)
异常回溯（最后一次调用）
<ipython-input-6-66d5567477fd> in <module>()
8 #final_clip.set_audio(audio.set_duration(final_clip))
9
---> 10 final_clip.resize(width=480).write_videofile(exportfile, fps=25)
11
12 if meta['width']>480:
/Applications/anaconda/lib/python2.7/site-packages/moviepy/video/fx/resize.pyc in resize(clip, newsize, height, width, apply_to_mask)
142 fl = lambda pic: resizer(pic.astype('uint8'), newsize)
143
--> 144 newclip = clip.fl_image(fl)
145
146 if apply_to_mask and clip.mask is not None:
/Applications/anaconda/lib/python2.7/site-packages/moviepy/video/VideoClip.pyc in fl_image(self, image_func, apply_to)
512 `get_frame(t)` by another frame, `image_func(get_frame(t))`
513 """
--> 514 return self.fl(lambda gf, t: image_func(gf(t)), apply_to)
515
516 # --------------------------------------------------------------
/Applications/anaconda/lib/python2.7/site-packages/moviepy/Clip.pyc in fl(self, fun, apply_to, keep_duration)
134
135 #mf = copy(self.make_frame)
--> 136 newclip = self.set_make_frame(lambda t: fun(self.get_frame, t))
137
138 if not keep_duration:
<decorator-gen-180> in set_make_frame(self, mf)
/Applications/anaconda/lib/python2.7/site-packages/moviepy/decorators.pyc in outplace(f, clip, *a, **k)
12 """ Applies f(clip.copy(), *a, **k) and returns clip.copy()"""
13 newclip = clip.copy()
---> 14 f(newclip, *a, **k)
15 return newclip
16
/Applications/anaconda/lib/python2.7/site-packages/moviepy/video/VideoClip.pyc in set_make_frame(self, mf)
652 """
653 self.make_frame = mf
--> 654 self.size = self.get_frame(0).shape[:2][::-1]
655
656
<decorator-gen-137> in get_frame(self, t)
/Applications/anaconda/lib/python2.7/site-packages/moviepy/decorators.pyc in wrapper(f, *a, **kw)
87 new_kw = {k: fun(v) if k in varnames else v
88 for (k,v) in kw.items()}
---> 89 return f(*new_a, **new_kw)
90 return decorator.decorator(wrapper)
91
/Applications/anaconda/lib/python2.7/site-packages/moviepy/Clip.pyc in get_frame(self, t)
93 return frame
94 else:
---> 95 return self.make_frame(t)
96
97 def fl(self, fun, apply_to=[] , keep_duration=True):
/Applications/anaconda/lib/python2.7/site-packages/moviepy/Clip.pyc in <lambda>(t)
134
135 #mf = copy(self.make_frame)
--> 136 newclip = self.set_make_frame(lambda t: fun(self.get_frame, t))
137
138 if not keep_duration:
/Applications/anaconda/lib/python2.7/site-packages/moviepy/video/VideoClip.pyc in <lambda>(gf, t)
512 `get_frame(t)` by another frame, `image_func(get_frame(t))`
513 """
--> 514 return self.fl(lambda gf, t: image_func(gf(t)), apply_to)
515
516 # --------------------------------------------------------------
/Applications/anaconda/lib/python2.7/site-packages/moviepy/video/fx/resize.pyc in <lambda>(pic)
140
141 else:
--> 142 fl = lambda pic: resizer(pic.astype('uint8'), newsize)
143
144 newclip = clip.fl_image(fl)
/Applications/anaconda/lib/python2.7/site-packages/moviepy/video/fx/resize.pyc in resizer(pic, newsize)
30 pilim = Image.fromarray(pic)
31 resized_pil = pilim.resize(newsize[::-1], Image.ANTIALIAS)
---> 32 arr = np.fromstring(resized_pil.tostring(), dtype='uint8')
33 return arr.reshape(newshape)
34 resizer.origin = "PIL"
/Applications/anaconda/lib/python2.7/site-packages/PIL/Image.pyc in tostring(self, *args, **kw)
684 def tostring(self, *args, **kw):
685 raise Exception("tostring() has been removed. " +
--> 686 "Please call tobytes() instead.")
687
688 def tobitmap(self, name="image"):
Exception: tostring() has been removed. Please call tobytes() instead.
resize() 函数的帮助：
resize(clip, newsize=None, height=None, width=None, apply_to_mask=True)
| Returns a video clip that is a resized version of the clip.
|
| Parameters
| ------------
|
| newsize:
| Can be either
| - ``(height,width)`` in pixels or a float representing
| - A scaling factor, like 0.5
| - A function of time returning one of these.
|
| width:
| width of the new clip in pixel. The height is then computed so
| that the width/height ratio is conserved.
|
| height:
| height of the new clip in pixel. The width is then computed so
| that the width/height ratio is conserved.
|
| Examples
| ----------
|
| >>> myClip.resize( (460,720) ) # New resolution: (460,720)
| >>> myClip.resize(0.6) # width and heigth multiplied by 0.6
| >>> myClip.resize(width=800) # height computed automatically.
| >>> myClip.resize(lambda t : 1+0.02*t) # slow swelling of the clip
我尝试了所有示例：resize((width,height))、resize(domsampling)、resize(width=800)、resize(lambda t : 1+0.02*t)。但他们都得到同样的错误。