OpenCV でキャプチャーしたビデオをファイルに出力

参考
https://opencv-python-tutroals.readthedocs.io/en/latest/py_tutorials/py_gui/py_video_display/py_video_display.html

import cv2

cap = cv2.VideoCapture(0) 
w = cap.get(cv2.CAP_PROP_FRAME_WIDTH)
h = cap.get(cv2.CAP_PROP_FRAME_HEIGHT)
fps = cap.get(cv2.CAP_PROP_FPS)
fourcc = cv2.VideoWriter_fourcc(*'MP4V') 
out = cv2.VideoWriter('out.mp4',fourcc, 30.0, (int(w),int(h))) 

while(True):
    ret, frame = cap.read()
    if ret==True:
        out.write(frame)       
        cv2.imshow('frame',frame)  
        keyboard = cv2.waitKey(30)
        if keyboard == 27:
            break
    else:
        break
cap.release()
out.release()  
cv2.destroyAllWindows()

import cv2

cap = cv2.VideoCapture(0)

w = cap.get(cv2.CAP_PROP_FRAME_WIDTH)

h = cap.get(cv2.CAP_PROP_FRAME_HEIGHT)

fps = cap.get(cv2.CAP_PROP_FPS)

fourcc = cv2.VideoWriter_fourcc(*'MP4V')

out = cv2.VideoWriter('out.mp4',fourcc, 30.0, (int(w),int(h)))

while(True):

ret, frame = cap.read()

if ret==True:

out.write(frame)

cv2.imshow('frame',frame)

keyboard = cv2.waitKey(30)

if keyboard == 27:

break

else:

break

cap.release()

out.release()

cv2.destroyAllWindows()

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