Streams from cameras stop if there are two of them on a page

Using Django Getting Started
1

Hello.

Without much hope, but I’ll write for help.

I made an application that shows the image from the camera after detection and calculation in real time.

I show the video on the site.
If I show a stream from one camera

<img src="{% url 'video_feed' %}" alt="Video Feed 1" width="800" height="600">

it works perfectly.

If there are two streams, but from the same camera - ideal.

<img src="{% url 'video_feed' %}" alt="Video Feed 1" width="800" height="600">
<img src="{% url 'video_feed' %}" alt="Video Feed 1" width="800" height="600">

If two streams are from different cameras, it freezes almost completely.

<img src="{% url 'video_feed' %}" alt="Video Feed 1" width="800" height="600">
<img src="{% url 'second_video_feed' %}" alt="Video Feed 2" width="800" height="600">

I open each stream separately - perfect.

http://127.0.0.1:8000/video_feed/
http://127.0.0.1:8000/second_video_feed/

What could be the reason?
Even tried threading, but to no avail. The final version of views.py I enclose

from django.views.decorators import gzip
from .object_counter import CountObject_Camera1, VideoCapture_Camera1, CountObject_Camera2, VideoCapture_Camera2
from django.shortcuts import render
import cv2
import threading

rtsp_url1 = "rtsp:///cam/realmonitor?channel=1&subtype=00&authbasic=[AUTH]"  
rtsp_url2 = "rtsp:///cam/realmonitor?channel=1&subtype=00&authbasic=[AUTH]"  

count_object_instance1 = CountObject_Camera1(rtsp_url1)
count_object_instance2 = CountObject_Camera2(rtsp_url2)

video_capture1 = VideoCapture_Camera1(rtsp_url1)
video_capture2 = VideoCapture_Camera1(rtsp_url2)

lock1 = threading.Lock()
lock2 = threading.Lock()

@gzip.gzip_page
def video_feed(request):
    def generate(camera_instance, count_object_instance, lock):
        while True:
            with lock:
                frame = camera_instance.read()

            annotated_frame = count_object_instance.process_frame(frame)
            _, buffer = cv2.imencode('.jpg', annotated_frame)
            frame_bytes = buffer.tobytes()

            yield (b'--frame\r\n'
                   b'Content-Type: image/jpeg\r\n\r\n' + frame_bytes + b'\r\n')

    return StreamingHttpResponse(generate(video_capture1, count_object_instance1, lock1), content_type='multipart/x-mixed-replace; boundary=frame')

def second_video_feed(request):
    def generate(camera_instance, count_object_instance, lock):
        while True:
            with lock:
                frame = camera_instance.read()

            annotated_frame = count_object_instance.process_frame(frame)
            _, buffer = cv2.imencode('.jpg', annotated_frame)
            frame_bytes = buffer.tobytes()

            yield (b'--frame\r\n'
                   b'Content-Type: image/jpeg\r\n\r\n' + frame_bytes + b'\r\n')

    return StreamingHttpResponse(generate(video_capture2, count_object_instance2, lock2), content_type='multipart/x-mixed-replace; boundary=frame')
def index(request):
    return render(request, 'index.html')

Thank you

2

It was a problem with the detector, not with Django