Problems during transmission by applying canvas to openvidu and filtering it

OpenVidu v2 Issues with deployment
1

I’m putting a filter on the video I got through Openvidu by applying canvas.

The subscriber has a video with a filter on it, but the publisher has a video with a filter on the black screen.

Real-time screens without filter are transmitted normally.

How can we solve it?

// blur filter
import React, { useEffect, useState, useRef } from “react”;
import “./Item.css”;

const ItemOneBlur = ({ streamManager }) => {

const videoRef = React.createRef();
const canvasRef = useRef(null);

useEffect(() => {
streamManager.addVideoElement(videoRef.current);
}, [streamManager, videoRef]);

useEffect(() => {
// Add a function to be called every time the video is played
// videoRef.current.addEventListener(“play”, () => {
// Set the canvas dimensions to match the video
if(canvasRef.current) {
canvasRef.current.width = videoRef.current.videoWidth;
canvasRef.current.height = videoRef.current.videoHeight;
// Draw the video frame-by-frame onto the canvas
const ctx = canvasRef.current.getContext(“2d”);

  function drawFrame() {
    // Check if the video has ended
    // if (!videoRef.current.paused && !videoRef.current.ended) {
      if (videoRef.current && !videoRef.current.ended) {
      // Draw the video frame to the canvas
      // Call this function again to draw the next frame
      ctx.restore();
      ctx.translate(canvasRef.current.width, 0);
      ctx.scale(-1, 1);
      ctx.filter = "blur(20px)";
      ctx.drawImage(videoRef.current, 0, 0);
      ctx.setTransform(1, 0, 0, 1, 0, 0);
      ctx.filter = "none";
      // ctx.save();
      setTimeout(drawFrame, 50);
    }
  }
  drawFrame();

  return ()=>{
    ctx.clearRect(0, 0, 0, 0);
  }

}

}, [videoRef]);

return (


<video
style={{ display: “none” }} ref={videoRef} className=“Video_myturn”
/>
<canvas
style={{ display: “block” }} ref={canvasRef} className=“Video_myturn”
/>

);
};

export default ItemOneBlur;