Problem with recent cv2 version on a RasPi Zero W: VIDEOIO(...): can't open camera by index

[FabPi]

hey,

thanks for your work, helped a lot. Anyway, i faced an error embedding this to my RasPi zero W and so i had to modify your code:
_
VIDEOIO(V4L2:/dev/video0): can't open camera by index
_

I fixed it by rewrite and include cv2.VideoCapture(0) into the video_stream() function:

def video_stream():
    video = cv2.VideoCapture(0)
    while True:
        ret, frame = video.read()
        if not ret:
            break;
        else:
            ret, buffer = cv2.imencode('.jpeg',frame)
            frame = buffer.tobytes()
            yield (b' --frame\r\n' b'Content-type: imgae/jpeg\r\n\r\n' + frame +b'\r\n')
    video.release()

after that, it workes as intended.

Best Regards
Fabian

[RaresAil]

@FabPi for me that didn't worked, and i worked on a different approach on the server by using libcamera-vid udp stream and opencv

https://github.com/RaresAil/raspbian-csi-stream