Revision history [back]

Hi,

I am streaming video over a network through sockets. I am able to view the video with mplayer so I know it arrives correctly. What I would like to do is capture that video stream over the socket with cv2.VideoCapture. I have tried as shown below but it gives a TypeError (also shown below). Is there a way to capture this video through VideoCapture or some other opencv functionality?

My Capture code:

 import socket
import cv2
import struct
import io
import numpy as np
import traceback
 
traceback
def main():
try:
server_socket = socket.socket()
server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
server_socket.bind(('0.0.0.0', 5001))
server_socket.listen(0)
connection = server_socket.accept()[0].makefile('rb')
 
server_socket.accept()[0].makefile('rb')
cv2.namedWindow("test-h264", cv2.WINDOW_NORMAL)
video = cv2.VideoCapture(connection)
while True:
ret,frame = video.read() 
 
cv2.imshow("test-h264",frame)
except Exception as e:
traceback.print_exc()
finally:
connection.close()
server_socket.close()
 
server_socket.close()
if __name__ == "__main__":
main()
 
Error 

 camera$ python testh264.py
<socket._fileobject object="" at="" 0x2b07cd0="">
object at 0x2b07cd0>
init done
opengl support available
Traceback (most recent call last):
File "testh264.py", line 23, in main
video = cv2.VideoCapture(connection)
TypeError: an integer is required
camera$
 

Hi,

I am streaming video over a network through sockets. I am able to view the video with mplayer so I know it arrives correctly. What I would like to do is capture that video stream over the socket with cv2.VideoCapture. I have tried as shown below but it gives a TypeError (also shown below). Is there a way to capture this video through VideoCapture or some other opencv functionality?

My Capture code:

import socket
import cv2
import struct
import io
import numpy as np
import traceback

def main():
    try:
        server_socket = socket.socket()
        server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
        server_socket.bind(('0.0.0.0', 5001))
        server_socket.listen(0)
        connection = server_socket.accept()[0].makefile('rb')

        cv2.namedWindow("test-h264", cv2.WINDOW_NORMAL)
        video = cv2.VideoCapture(connection)
        while True:
            ret,frame = video.read()           
            cv2.imshow("test-h264",frame)
    except Exception as e:
        traceback.print_exc()
    finally:
        connection.close()
        server_socket.close()

if __name__ == "__main__":
    main()

The error message:

camera$ python testh264.py 
<socket._fileobject object at 0x2b07cd0>
init done 
opengl support available 
Traceback (most recent call last):
  File "testh264.py", line 23, in main
    video = cv2.VideoCapture(connection)
TypeError: an integer is required
camera$

The video stream is from a picamera, is 1080p and is in h.264 format. The code above is on a laptop with ubuntu 12.04 installed.

Any suggestions would be appreciated.

Thanks...

Mike