Segmentation fault (core dumped) python

Question

I am a beginner to python. I want to read frame from avi files and I write following code.When I run this code I get the message like Segmentation fault (core dumped). Could anyone tell me the reason. I am sure I have used the right root of the avi file. I try to find the problem by ipython. I found the error occured when reach the line of ret, frame = cap.read().

import numpy as np
import cv2

cap = cv2.VideoCapture('/home/sunjia/code/night_goto.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()

It would be helpful if you posted the error message you received as well — J. Murray
– J. Murray, Commented Dec 8, 2015 at 0:03

Shadow · Accepted Answer · 2017-01-17 05:12:02Z

1

Change While condition

   while(ret):

Try this !!

**** Correction **** before while loop add this statement: ret, frame = cap.read() .read() will return two parameters: the frame and boolean: 'True' if there is any frame in the read file or 'False' if there is no frame. This way 'ret' will be initialized and can be used for 'while()'. Now, the while() loop will run till the statement "ret, frame = cap.read()" in the loop returns parameters.

edited Jan 17, 2017 at 5:12

Shadow

9,5474 gold badges50 silver badges60 bronze badges

answered Jan 16, 2017 at 7:20

Elaimte

112 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

MB-F Over a year ago

Hi and thank you for your effort! Can you please explain why you think this will solve the problem? (Also note that while should be lower case in Python and that ret should be initialized.)

Collectives™ on Stack Overflow

Segmentation fault (core dumped) python

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related