我已經看過OpenCV的Python example介紹了如何使用VideoCapture和VideoWriter來捕獲和寫出視頻文件。但我一直在想：OpenCV Error: Assertion failed (dst.data == dst0.data) in cvCvtColor, file

/tmp/opencv-n8PM/opencv-2.4.7.1/modules/imgproc/src/color.cpp, line 4422

Traceback (most recent call last):

File "examples/observer/observer.py", line 17, in

video_writer.write(frame)

cv2.error: /tmp/opencv-n8PM/opencv-2.4.7.1/modules/imgproc/src/color.cpp:4422: error:

(-215) dst.data == dst0.data in function cvCvtColor

清理了攝像機。

代碼如下：#!/usr/bin/env python import cv2

if __name__ == "__main__":

# find the webcam

capture = cv2.VideoCapture(0)

# video recorder

fourcc = cv2.cv.CV_FOURCC(*'XVID') # cv2.VideoWriter_fourcc() does not exist

video_writer = cv2.VideoWriter("output.avi", fourcc, 20, (680, 480))

# record video

while (capture.isOpened()):

ret, frame = capture.read()

if ret:

video_writer.write(frame)

cv2.imshow('Video Stream', frame)

else:

break

capture.release()

video_writer.release()

cv2.destroyAllWindows()

總結

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