我正在尝试将视频从客户端发送到服务器并在服务器端显示。问题是,当我运行代码时,我得到一个空的无响应窗口!
这是我在这里找到的正在使用的代码 https://stackoverflow.com/a/30988516/4663461
客户端.py
import cv2
import numpy as np
import socket
import sys
import pickle
import struct
cap=cv2.VideoCapture(path_to_video)
clientsocket=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
clientsocket.connect(('localhost',8089))
while True:
ret,frame=cap.read()
data = pickle.dumps(frame)
clientsocket.sendall(struct.pack("L", len(data))+data)
服务器.py
import socket
import sys
import cv2
import pickle
import numpy as np
import struct
HOST=''
PORT=8089
s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
print ('Socket created')
s.bind((HOST,PORT))
print ('Socket bind complete')
s.listen(10)
print ('Socket now listening')
conn,addr=s.accept()
data = b''
payload_size = struct.calcsize("L")
while True:
while len(data) < payload_size:
data += conn.recv(4096)
packed_msg_size = data[:payload_size]
data = data[payload_size:]
msg_size = struct.unpack("L", packed_msg_size)[0]
while len(data) < msg_size:
data += conn.recv(4096)
frame_data = data[:msg_size]
data = data[msg_size:]
###
frame=pickle.loads(frame_data)
print frame
cv2.imshow('frame',frame)
最佳答案
我有点晚了,但我已经创建了强大的线程 VidGear现在提供的视频处理 python 库 NetGear API , 它专门设计用于通过 ZmQ 消息系统在网络上的互连系统之间实时同步传输视频帧。为了您的方便,这里有一个最简单的例子:
A.服务器端:(最低限度示例)
打开您最喜欢的终端并执行以下 python 代码:
注意: 您可以随时在服务器端和客户端按下键盘上的 [Ctrl+c] 来结束流式传输!
# import libraries
from vidgear.gears import VideoGear
from vidgear.gears import NetGear
stream = VideoGear(source='test.mp4').start() #Open any video stream
server = NetGear() #Define netgear server with default settings
# infinite loop until [Ctrl+C] is pressed
while True:
try:
frame = stream.read()
# read frames
# check if frame is None
if frame is None:
#if True break the infinite loop
break
# do something with frame here
# send frame to server
server.send(frame)
except KeyboardInterrupt:
#break the infinite loop
break
# safely close video stream
stream.stop()
# safely close server
writer.close()
B.客户端:(Bare-Minimum example)
然后在同一系统上打开另一个终端并执行以下python代码并查看输出:
# import libraries
from vidgear.gears import NetGear
import cv2
#define netgear client with `receive_mode = True` and default settings
client = NetGear(receive_mode = True)
# infinite loop
while True:
# receive frames from network
frame = client.recv()
# check if frame is None
if frame is None:
#if True break the infinite loop
break
# do something with frame here
# Show output window
cv2.imshow("Output Frame", frame)
key = cv2.waitKey(1) & 0xFF
# check for 'q' key-press
if key == ord("q"):
#if 'q' key-pressed break out
break
# close output window
cv2.destroyAllWindows()
# safely close client
client.close()
注意:NetGear 目前仅支持两种 ZeroMQ 消息传递模式:即 zmq.PAIR
、zmq.REQ 和 zmq.REP
以及zmq.PUB和zmq.SUB
,支持的协议(protocol)有:'tcp', 'ipc'
可以在这里找到更多高级用法: https://github.com/abhiTronix/vidgear/wiki/NetGear
关于python - 如何在python中通过网络发送实时视频,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43299440/