[Python] how can i save a video produced with cv2.VideoWriter at Google-Colab to a Google...

I am trying to somehow copy the "video1.mkv" at a folder called "my folder".

There are better ways to copy but my tend is to read "video1.mkv" and create a new video by using the video that I've read before.
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The problem is that I cant save it!

My codes are in Google-Colaboratory and I use Google-Drive as my directory for saving my files, codes or read anything from it. ' everything is available in the "my folder", include the "name.ipnb" that I am coding in it'
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So this is the code snippet:

import cv2 as cv

import os
from google.colab import drive
drive.mount('/content/drive')
os.chdir('/content/drive/My Drive/my folder')

caped = cv.VideoCapture('video1.mkv')


Start of problems:

x = cv.VideoWriter('./video2', cv.VideoWriter_fourcc(*'XVID'), 3, (600, 500))

while(caped.isOpened()):

ret, frame = caped.read()

if ret == True:
x.write(frame)

else:
break


caped.release()
x.release()

there is not any error raised but "video2" won't save!
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