How to save a video in Python OpenCV

Question

I have opened a Video using CV2, made some changes using cv2.rectangle.

Now, when I do cv2.imshow('frame',frame), it plays the video.

Instead of this, I want to save the video somewhere, in the original size and frame rate.

this may be relevant.

AcaNg
– AcaNg

2019-07-26 09:12:01 +00:00
Commented Jul 26, 2019 at 9:12 — AcaNg
– AcaNg, Commented Jul 26, 2019 at 9:12

s3nh · Accepted Answer · 2019-07-26 09:16:52Z

6

You can save video frame by frame. Based on example on docs:

Open Cv video capture


import numpy as np
import cv2

cap = cv2.VideoCapture(0)

# Define the codec and create VideoWriter object
fourcc = cv2.VideoWriter_fourcc(*'XVID')
out = cv2.VideoWriter('output.avi',fourcc, 20.0, (640,480))

while(cap.isOpened()):
    ret, frame = cap.read()
    if ret==True:
        frame = cv2.flip(frame,0)

        # write the flipped frame
        out.write(frame)

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

# Release everything if job is finished
cap.release()
out.release()
cv2.destroyAllWindows()

answered Jul 26, 2019 at 9:16

s3nh

5562 silver badges11 bronze badges

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

Collectives™ on Stack Overflow

How to save a video in Python OpenCV

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related