python基础===基于cv2的播放器

import cv2  
import threading
import win32gui,win32con
 
class Producer(threading.Thread):  
    """docstring for ClassName"""  
    def __init__(self,str_rtsp):  
        super(Producer, self).__init__()  
        self.str_rtsp = str_rtsp
        self.play = True
        #通过cv2中的类获取视频流操作对象cap  
        self.cap = cv2.VideoCapture(self.str_rtsp)   
        #调用cv2方法获取cap的视频帧（帧：每秒多少张图片）  
        fps = self.cap.get(cv2.CAP_PROP_FPS)  
        print(fps)  
        #获取cap视频流的每帧大小  
        size = (int(self.cap.get(cv2.CAP_PROP_FRAME_WIDTH)),  
                int(self.cap.get(cv2.CAP_PROP_FRAME_HEIGHT)))  
        print(size)  
        #定义编码格式mpge-4  
        fourcc = cv2.VideoWriter_fourcc(‘M‘, ‘P‘, ‘4‘, ‘2‘)  
        #定义视频文件输入对象  
        self.outVideo = cv2.VideoWriter(‘saveDir.avi‘,fourcc,fps,size)
        cv2.namedWindow("cap video",0);
    def run(self):  
        print(‘in producer‘)   
        while True:  
            ret,image = self.cap.read()
            if (ret == True):
                if win32gui.FindWindow(None,‘cap video‘):
                    cv2.imshow(‘cap video‘,image)
                    self.outVideo.write(image)
                else:  
                    self.outVideo.release()
                    self.cap.release()  
                    cv2.destroyAllWindows()
                    break
            cv2.waitKey(1)
            if cv2.waitKey(1) & 0xFF == ord(‘q‘): 
                self.outVideo.release()  
                self.cap.release()  
                cv2.destroyAllWindows()
                break
                # continue
 
if __name__ == ‘__main__‘:  
    print(‘run program‘)  
    rtsp_str=‘http://ivi.bupt.edu.cn/hls/cctv1hd.m3u8‘  #中央一套
    producer = Producer(rtsp_str)  
    producer.start()