Capture stills from Youtube video

capture.py

import pafy
import cv2
import math
from datetime import datetime

url = "add url here"

video = pafy.new(url)
best = video.getbest(preftype="mp4")

capture = cv2.VideoCapture()
capture.open(best.url)

imagesFolder = "stills"
everyNthFrame = 1800 # depends on framerate

x = 0
while(capture.isOpened()):
  now = datetime.now()
  datetimeString = now.strftime("%Y%m%dT%H%M%S")

  x = x + 1
  frameId = capture.get(1) #current frame number
  ret, frame = capture.read()
  if ret:
    if (x % everyNthFrame == 0):
      filename = imagesFolder + "/prefix_" +  datetimeString + "_UTC.png"
      cv2.imwrite(filename, frame)
      print("Wrote " + filename)
  else:
    break


capture.release()

print("Done!")