在python中利用opencv读取rtsp视频流时，延时大的问题，但在读取电脑本机摄像头时，延时就小很多，代码是相同的代码。
import threading, cv2
import time
class Stack:
def __init__(self, stack_size):
self.items = []
self.stack_size = stack_size
def is_empty(self):
return len(self.items) == 0
def pop(self):
return self.items.pop()
def peek(self):
if not self.isEmpty():
return self.items[len(self.items) - 1]
def size(self):
return len(self.items)
def push(self, item):
if self.size() >= self.stack_size:
self.items.remove(self.items[0])
self.items.append(item)
def clear(self):
self.items.clear()
def capture_thread(video_path, frame_buffer, lock):
print("capture_thread start")
vid = cv2.VideoCapture(video_path)
print(vid.get(cv2.CAP_PROP_FPS))
if not vid.isOpened():
raise IOError("Couldn't open webcam or video")
while True:
return_value, frame = vid.read()
if return_value is not True:
break
lock.acquire()
start_time = time.time()
print('图像存放时间：', start_time)
frame_buffer.push([frame, start_time])
print('存放后列表中有图像的张数：', frame_buffer.size())
lock.release()
cv2.waitKey(25)
def play_thread(frame_buffer, lock):
print("detect_thread start")
print("detect_thread frame_buffer size is", frame_buffer.size())
while True:
if frame_buffer.size() >= 1:
lock.acquire()
frame_list = frame_buffer.pop()
frame = frame_list[0]
end_time = time.time()
frame_buffer.clear()
print('图像取出时间：', end_time)
print('取出后列表中有图像的张数：', frame_buffer.size())
print('每张图像显示时间：', end_time - frame_list[1])
lock.release()
# TODO 算法
cv2.imshow("result", frame)
if cv2.waitKey(1) & 0xFF == ord('q'):
break
# path = 'rtsp://admin:abcd1234@192.168.1.64'
path = 'rtsp://192.168.1.152/chn0'
# path=0
frame_buffer = Stack(3)
lock = threading.RLock()
t1 = threading.Thread(target=capture_thread, args=(path, frame_buffer, lock))
t1.start()
t2 = threading.Thread(target=play_thread, args=(frame_buffer, lock))
t2.start()
哪位大哥能帮忙分析解决一下，谢谢！
