Clip is totally transparent when crossfadeout effect starts with time resized clip.

This is a small example where the issue occurs. I may do something wrong but I wondering how to get this to work.

#!/usr/bin/python3.8
# -*- coding: utf-8 -*-

from moviepy.editor import *


clip1 = ColorClip((200,200),color=(255,0,0),duration=10)
clip2 = ColorClip((200,200),color=(0,255,0),duration=10)

clip1 = clip1.set_position((860,440))
clip2 = clip2.set_position((860,440))

clip1 = clip1.set_end(10).crossfadeout(1)
clip2 = clip2.set_start(clip1.end - 1).crossfadein(1)
clip2 = clip2.set_end(20).crossfadeout(1)

# Those two lines cause the issue
clip1 = clip1.resize(lambda t: 1 + 0.05 * t)
clip2 = clip2.resize(lambda t: 1 + 0.05 * t)

compo = CompositeVideoClip([clip1,clip2], size=[1920,1080], use_bgclip=False, bg_color=(0,0,0))
compo.write_videofile("example.mp4", fps=30)

Expected Behavior

I want my clip to get bigger and to fadeout to let the next clip appears.

Actual Behavior

If I try to resize the clip given the time, when the fadeout should start, the clip disappears. If I comment out the resize part, the clips are shown as I expect but, I really need to resize them.

Steps to Reproduce the Problem

Just run my example, try with or without the resize part.

Specifications

• Python Version: 3.8
• Moviepy Version: v1.0.3
• Platform Name: Ubuntu
• Platform Version: 18.04

Thank you! Regards.

[tburrows13]

Hello, thanks for the report. I can confirm that I can replicate this issue.

[tburrows13]

It will get closed when #1200 is merged into master 😃. Good to know that it worked!