Moviepy: Blink VFX gives error "NameError: global name 'copy' is not defined"

[evanthemann]

I am able to do many of the vfx without problem, but some of them give me trouble, like Blink.

I put in:

clip = clip.fx(vfx.blink, d_on=1, d_off=1)

and I get the error:

NameError: global name 'copy' is not defined

[earney]

@evanthemann , I've just pushed a fix for this error to the repo. Can you pull from it, and try again?

[evanthemann]

I just tried again.

clip = TextClip('hello world', size=(1280,720), color='white')
clip2 = clip.fx(vfx.blink, d_on=1, d_off=1)
clip2.set_duration(5)
clip2.write_videofile('testclip.mp4', codec='libx264', fps=24)

did not give me any errors, but the video didn't blink at all.

Tried with a VideoFileClip:

video = VideoFileClip('testclip.mp4')
videofx = video.fx(vfx.blink, d_on=1, d_off=1)

and I got this error:

AttributeError: VideoFileClip instance has no attribute 'with_mask'

[earney]

VideoClip.py used to have a with_mask function, which is defined below. Should we put this back in or should we modify blink and on_color so they do not use this function anymore?

def with_mask(self, constant_size=True):
        """ 
        Returns a copy of the clip with a completely opaque mask
        (made of ones). This makes computations slow compared to having
        a None mask but can be useful in many cases. Choose

        :param constant_size: `False` for clips with moving image size.
        """

        if constant_size:
            return self.set_mask(ColorClip(self.size, 1.0, ismask=True))
        else:
            mask = VideoClip(ismask=True).set_get_frame(
                lambda t: np.ones(self.get_frame(t).shape))
            return self.set_mask(mask)

[earney]

@Zulko, I've modified blink and replaced the with_mask function with add_mask, but the video produced still does not blink. Is there an issue with the following line:

newclip.mask = newclip.mask.fl( lambda gf,t: gf(t)*((t % D) < d_on))

[26F]

I'm getting AttributeError: 'VideoFileClip' object has no attribute 'with_mask'

this is the code

from moviepy.editor import VideoFileClip, CompositeVideoClip, vfx

clipa = VideoFileClip("video//1.mp4")
clipb = VideoFileClip("video//2.mp4")

clipa = clipa.fx(vfx.blink(clipa, d_on=0.10, d_off=0.10))

fcut = CompositeVideoClip([clipb, clipa])

fcut.write_videofile("outbb.mp4")

[tburrows13]

Just do clipa = clipa.blink(clipa, d_on=0.10, d_off=0.10)

[26F]

AttributeError: 'VideoFileClip' object has no attribute 'blink'