无法在OpenCV（Python）中打开视频

Question

I am trying to open video in openCV but it is not working i found solutions by adding full path ie "D:/Folder1/Folder2/1.avi", converting video to .avi instead of mp4, copy the dll file from open cv to python folder after changing it is name by opencv version and windows 64 bit ffmpeg opencv_ffmpeg320_64.dll my opencv version 3.2.0 windows 64 python2.7 and Anaconda2

I am beginner in Python and unfortunately nothing of the above solved my problem.

below my code snippet:

import numpy as np
import cv2

cap = cv2.VideoCapture('1.avi')
if cap.isOpened():
    print "opend"
else:
    print "not opend"

while(cap.isOpened()):
    ret, frame = cap.read()

    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    cv2.imshow('frame',gray)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

cap.release()
cv2.destroyAllWindows()

Answer 1

OpenCV is trying to find the codec needed to open that video but is not finding it, so you need to install it. Try to download a codec package from the internet and then try again.