Unable to open Video File in Python using OpenCV

Question

I have installed OpenCV in Windows 7 (32 bit) and Put the cv2.pyd file in Python Modules Directory and everything is working just fine but except opening of Video file {I have tried 5-6 different kind of extensions but nothing is helping} CODE::

import numpy as np
import cv2
cap = cv2.VideoCapture('vtest.avi')
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()

the line cap.isOpened() always returns False {i also tried providing absolute path to the video file} but that too return false So please can please anybody help me that why that line is always returning False

sudo · Accepted Answer · 2015-06-19 00:49:08Z

5

I have found the solution there is a file present in C:\opencv\sources\3rdparty\ffmpeg\opencv_ffmpeg.dll just Copy and Paste that file into your Python base directory say C:\Python\opencv_ffmpeg.dll and rename the file to the version of the OpenCV you are using like in my case its v3.0.0 so i have to rename it as C:\Python\opencv_ffmpeg300.dll if your system is X64 then also add _64 at the end like C:\Python\opencv_ffmpeg300_64.dll

answered Jun 19, 2015 at 0:49

sudo

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3 Comments

MZHm Over a year ago

Worked for me, why don't you mark it as a solution?

robert Over a year ago

This worked for me also. I didn't need to rename the DLL as the version of OpenCV I downloaded had the DLLs named correctly. Important point is that this goes into the python dir e.g. C:\Python27 rather than the DLLs directory beneath that. I had to restart the python interpreter as well.

Abdul Muheet Over a year ago

Are you able to play the sound with the video

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