python opencv3 获取摄像头视频

 git：https://github.com/linyi0604/Computer-Vision

 

 

 1 # coding:utf8
 2 
 3 import cv2
 4 
 5 
 6 """
 7 捕获摄像头10s的视频信息 写入一个avi文件
 8 """
 9 
10 cameraCapture = cv2.VideoCapture(0)     # 传入0代表0号摄像头
11 fps = 30
12 size = (
13     int(cameraCapture.get(cv2.CAP_PROP_FRAME_WIDTH)),
14     int(cameraCapture.get(cv2.CAP_PROP_FRAME_HEIGHT))
15 )
16 
17 videoWriter = cv2.VideoWriter(
18     "outputVid.avi",
19     cv2.VideoWriter_fourcc("I", "4", "2", "0"),
20     fps,
21     size
22 )
23 
24 success, frame = cameraCapture.read()
25 numFramesRemaining = 10 * fps - 1
26 while success and numFramesRemaining:
27     videoWriter.write(frame)
28     success, frame = cameraCapture.read()
29     numFramesRemaining -= 1
30 
31 cameraCapture.release()
32 
33 
34 """
35 如果使用一组摄像头或多个摄像头
36 用grab和retrieve方法代替
37 
38 success0 = cameraCapture.grab()
39 success1 = cameraCapture.grab()
40 if success0 and success1:
41     frame0 = cameraCapture0.retrieve()
42     frame1 = cameraCapture1.retrieve()
43     
44     
45 """

 

转载于:https://www.cnblogs.com/Lin-Yi/p/9392748.html