python opencv 录制视频_python-opencv 读取摄像头并保存为.mp4视频

import cv2

import sys

import time

dt = "2019-01-23 15:29:00"

#转换成时间数组

timeArray = time.strptime(dt, "%Y-%m-%d %H:%M:%S")

#转换成时间戳

timestamp = time.mktime(timeArray)

print(timeArray)

print(timestamp)

cap_1 = cv2.VideoCapture(1)

cap_1.set(3,1920)

cap_1.set(4,1080)

# cap_2 = cv2.VideoCapture(2)

# cap_3 = cv2.VideoCapture(3)

# cap_4 = cv2.VideoCapture(4)

write_ok = False

sz = (int(cap_1.get(cv2.CAP_PROP_FRAME_WIDTH)),

int(cap_1.get(cv2.CAP_PROP_FRAME_HEIGHT)))

fps = 30

fourcc = cv2.VideoWriter_fourcc('m', 'p', '4', 'v')

# fourcc = cv2.VideoWriter_fourcc(*'mpeg')

vout_1 = cv2.VideoWriter()

vout_1.open('./1/output.mp4',fourcc,fps,sz,True)

# vout_2 = cv2.VideoWriter()

# vout_2.open('./2/output.mp4',fourcc,fps,sz,True)

# vout_3 = cv2.VideoWriter()

# vout_3.open('./3/output.mp4',fourcc,fps,sz,True)

cnt = 0

while(True):

if(write_ok):

# print("video")

#获取当前时间

time_now = int(time.time())

#转换成localtime

# time_local = time.localtime(time_now)

print(time_now)

if time_now >= timestamp:

while(cnt < 900):

cnt += 1

print(cnt)

ret_1, frame_1 = cap_1.read()

vout_1.write(frame_1)

# ret_2, frame_2 = cap_2.read()

# vout_2.write(frame_2)

# ret_3, frame_3 = cap_3.read()

# vout_3.write(frame_3)

vout_1.release()

# vout_2.release()

# vout_3.release()

sys.exit()

else:

print("stop")

ret_1, frame_1 = cap_1.read()

cv2.imshow("cam_1", frame_1)

# ret_2, frame_2 = cap_2.read()

# cv2.imshow("cam_2", frame_2)

# ret_3, frame_3 = cap_3.read()

# cv2.imshow("cam_3", frame_3)

if cv2.waitKey(1) & 0xFF==ord("w"):

write_ok = write_ok is not True