Sending live video frame over network in python opencv

Question

I\'m trying to send live video frame that I catch with my camera to a server and process them. I\'m usig opencv for image processing and python for the language. Here is my

Answer 1

I'm kind of late but my powerful & threaded VidGear Video Processing python library now provide NetGear API, which is exclusively designed to transfer video frames synchronously between interconnecting systems over the network in real-time. Here's an example:

A. Server End:(Bare-Minimum example)

Open your favorite terminal and execute the following python code:

Note: You can end streaming anytime on both server and client side by pressing [Ctrl+c] on your keyboard on server end!

# 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. Client End:(Bare-Minimum example)

Then open another terminal on the same system and execute the following python code and see the output:

# 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()

More advanced usage and related docs can be found here: https://github.com/abhiTronix/vidgear/wiki/NetGear