rtsp -> python opencv -> rtsp

README.md

1. replace INPUT_RTSP_STREAMLINK and OUTPUT_RTSP_STREAMLINK with rtsp://yadayada
2. pip install opencv-python numpy tqdm
3. python process_rtsp_to_image.py
4. bash publish_image_to_rtsp.sh

process_rtsp_to_image.py

import cv2
from threading import Thread
import time
import os

class ThreadedCamera(object):
    def __init__(self, source = 0):

        self.capture = cv2.VideoCapture(source)

        self.thread = Thread(target = self.update, args = ())
        self.thread.daemon = True
        self.thread.start()

        self.status = False
        self.frame  = None

    def update(self):
        while True:
            if self.capture.isOpened():
                (self.status, self.frame) = self.capture.read()

    def grab_frame(self):
        if self.status:
            return self.frame
        return None  


if __name__ == '__main__':
    stream_link = "INPUT_RTSP_STREAMLINK"
    streamer = ThreadedCamera(stream_link)

    while True:
        frame = streamer.grab_frame()
        if frame is not None:
            cv2.imwrite("input.tmp.jpg", frame)
            os.rename("input.tmp.jpg", "input.jpg")
        time.sleep(5)
        

publish_image_to_rtsp.sh

#!/bin/bash

ffmpeg -loop 1 -re -i "input.jpg" -b:v 0.256M -an -rtsp_transport tcp \
 -vf drawtext="fontfile=monofonto.ttf: fontsize=20: box=1: [email protected]: boxborderw=5: fontcolor=white: x=(w-text_w-10): y=(h-text_h-10): text='processed\: %{gmtime\:%H\\\\\:%M\\\\\:%S}'" \
 -vcodec libx264  -r 30 -f rtsp OUTPUT_RTSP_STREAMLINK