How to save a video using OpenCV VideoWriter to a specific directory -- python

Question

I am trying to save a video in a specific folder. but after running the code no output is saved. Could anyone help? Thanks.

cap = cv2.VideoCapture(file_paths[0])
fgbg = cv2.bgsegm.createBackgroundSubtractorMOG()
fourcc = cv2.VideoWriter_fourcc(*'XVID')
name = "C:\jupyter_projects\Test Folder\Intention dataset\background_subtracted\out.mp4"
out = cv2.VideoWriter(name,fourcc, 20,(320,180),False)

while(1):
    ret, frame = cap.read()
    if (ret == True):
        resized_frame = cv2.resize(frame,(320,180),fx=0,fy=0, interpolation = cv2.INTER_CUBIC)
        fgmask = fgbg.apply(resized_frame)
        cv2.imshow('Frame',fgmask)
        out.write(fgmask)
        if cv2.waitKey(30) & 0xFF == ord('q'):
            break
    else:
        break
cap.release()
out.release()
cv2.waitKey(5)
cv2.destroyAllWindows()

PS: when I use default directory for saving videos output will be saved.

out = cv2.VideoWriter("out.mp4",fourcc, 20,(320,180),False)

I guess you have to escape those spaces in the path. In windows for example: "\"C:/Videos/Otters are the cutest/VerySweetOtter.mp4\"" — Tollpatsch, Dec 07 '19 at 14:48
@Tollpatsch I've changed my path but not worked again. only default path is working for that — Saha, Dec 07 '19 at 14:56

score 5 · Accepted Answer · answered Jun 23 '20 at 14:07

5

When you call the function

cv2.VideoWriter("/your/path/filename.mp4",fourcc, 20,(320,180))

I hope it helps :)

answered Jun 23 '20 at 14:07

marioandluigi8

124
2
1

score 2 · Answer 2 · answered Dec 07 '19 at 14:15

2

Try

fourcc = cv2.VideoWriter_fourcc(*'MP4V')

instead of

fourcc = cv2.VideoWriter_fourcc(*'XVID')

answered Dec 07 '19 at 14:15

Berkay

1,029
1
10
28

1

not worked, the problem is about changing directory. when I use default directory output will be saved. – Saha Dec 07 '19 at 14:36

score 1 · Answer 3 · answered Aug 02 '20 at 09:28

Using `createBackgroundSubtractorMOG2()`,

import cv2
cap = cv2.VideoCapture(0)
# fgbg = cv2.bgsegm.createBackgroundSubtractorMOG()
fgbg = cv2.createBackgroundSubtractorMOG2()
fourcc = cv2.VideoWriter_fourcc(*'XVID')
name = "C://path//of//your_dir//out.mp4"
out = cv2.VideoWriter(name,fourcc, 20,(320,180),False)

while(1):
    ret, frame = cap.read()
    if (ret == True):
        resized_frame = cv2.resize(frame,(320,180),fx=0,fy=0, interpolation = cv2.INTER_CUBIC)
        fgmask = fgbg.apply(resized_frame)
        cv2.imshow('Frame',fgmask)
        out.write(fgmask)
        if cv2.waitKey(30) & 0xFF == ord('q'):
            break
    else:
        break
cap.release()
out.release()
cv2.waitKey(5)
cv2.destroyAllWindows()

This will save your out.mp4 given location. You can also use single forward slash instead of double forward slash, when specifying location of your file.

score 0 · Answer 4 · answered Feb 16 '20 at 11:06

0

Try using single quote and using double slash for your file directory.

answered Feb 16 '20 at 11:06

Birdman

11

score 0 · Answer 5 · answered Feb 27 '23 at 01:49

0

If you are on windows, use a raw string in the format of: r"C:\bluh bluh directory\abc"

answered Feb 27 '23 at 01:49

AChang

1
2

Your answer could be improved with additional supporting information. Please [edit] to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – xlmaster Mar 03 '23 at 13:00

How to save a video using OpenCV VideoWriter to a specific directory -- python

5 Answers5

Using createBackgroundSubtractorMOG2(),

Using `createBackgroundSubtractorMOG2()`,