video-stream-client.py

import socket, pickle, struct
import cv2


# create socket
client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
host_ip = '127.0.1.1'  # paste your server ip address here
port = 9999
client_socket.connect((host_ip, port))  # a tuple
data = b""
payload_size = struct.calcsize("Q") # Q: unsigned long long integer(8 bytes)

#Business logic to receive data frames, and unpak it and de-serialize it and show video frame on client side
while True:
    while len(data) < payload_size:
        packet = client_socket.recv(4 * 1024)  # 4K, range(1024 byte to 64KB)
        #if not packet: break
        data += packet # append the data packet got from server into data variable
    packed_msg_size = data[:payload_size] #will find the packed message size i.e. 8 byte, we packed on server side.
    data = data[payload_size:] # Actual frame data
    msg_size = struct.unpack("Q", packed_msg_size)[0] # meassage size
    # print(msg_size)

    while len(data) < msg_size:
        data += client_socket.recv(4 * 1024) # will receive all frame data from client socket
    frame_data = data[:msg_size] #recover actual frame data
    data = data[msg_size:]
    frame = pickle.loads(frame_data) # de-serialize bytes into actual frame type
    cv2.imshow("RECEIVING VIDEO", frame) # show video frame at client side
    key = cv2.waitKey(1) & 0xFF
    if key == ord('q'): # press q to exit video
        break

client_socket.close()