Null MediaManager, npm package webrtc_adaptor version 2.4.3

[ThibaultOber]

Hello,

I am currently trying to configure a basic player using Angular.

• I have installed the  @antmedia/webrtc_adaptor plugin -> npm install antmedia/webrtc_adaptor
• I have added a index.d.ts inside the @types subfolder of npm which allows me to import the dependencies.

this is what the source code looks like:

import { Component, OnInit } from '@angular/core';
import { WebRTCAdaptor } from '@antmedia/webrtc_adaptor';

@Component({
  selector: 'app-player',
  templateUrl: './player.component.html',
  styleUrls: ['./player.component.css']
})
export class PlayerComponent implements OnInit {

  constructor() { }

  private websocketURL = "ws://myserver:5080/LiveApp/websocket";
  private streamId = "test";
  private webRTCAdaptor : any;

  private mediaConstraints = {
    video : false,
    audio : false
  };
        
  private pc_config = {
    'iceServers' : [ {
      'urls' : 'stun:stun1.l.google.com:19302'
    } ]
  };

  private sdpConstraints = {
    OfferToReceiveAudio : true,
    OfferToReceiveVideo : false
  };

  ngOnInit(): void {
    this.createStream();
  }

  createStream() : void
  {

    var adaptor = new WebRTCAdaptor();

    this.webRTCAdaptor = new WebRTCAdaptor({
      websocket_url : this.websocketURL,
      mediaConstraints : this.mediaConstraints,
      peerconnection_config : this.pc_config,
      sdp_constraints : this.sdpConstraints,
      remoteVideoId : "myRemoteVideo",
      isPlayMode : true,
      callback : (info : string, obj : any) => {
        if (info == "initialized") {
          console.log("initialized");
        }
        else if (info == "play_started") {
          console.log("play started");
        } else if (info == "play_finished") {
          console.log("play finished");
        }
        else {
          console.log( info + " notification received");
        }
      },
      callbackError : function(error : string, message : string) {
        alert("error callback: " +  JSON.stringify(error));
      }
    });

    this.startPlaying();
  }


  startPlaying() : void {
    this.webRTCAdaptor.play(this.streamId, "", "", [], "", "");
  }
  
   stopPlaying() : void {
    this.webRTCAdaptor.stop(this.streamId);
  }

}

I have the following error:

The member MediaManager during initialization of WebRTCAdaptor is null.

When i compare my files from npm to the ones provided with the default viewer, some guard have been added. I think that your npm package have not been updated with the most recent changes.

Do you you have a simple solution or should I import all the files manually from the one provided with the default installation ?

npm source on the left, ant media installation on the right. 

Thank you

 

[ThibaultOber]

var adaptor = new WebRTCAdaptor();

this line was causing the issue, removing it solve the problem.

You should still have a look to your npm package status

[Yash]

Hi @ThibaultOber
I hope you are fine.
Yes, you are correct. There is a known issue with the npm package, and the development team is working on it.
Please see the following Git Hub issue, as well as @rahul7827comment.
https://github.com/ant-media/Ant-Media-Server/issues/4402
 

[rahul7827]

Hi @ThibaultOber

14 hours ago, ThibaultOber said:

private mediaConstraints = {
    video : true,
    audio : true
  };

 

private sdpConstraints = {
    OfferToReceiveAudio : false,
    OfferToReceiveVideo : false
  };

Could you please make these changes as i qouted above, Since you had not enabled Video or Audio for the stream. For video stream you must enable video:true.

Also make the below changes and let us know this work for you.

Thank you

 

[rahul7827]

8 minutes ago, rahul7827 said:

Hi @ThibaultOber

private sdpConstraints = {
    OfferToReceiveAudio : false,
    OfferToReceiveVideo : false
  };

Could you please make these changes as i qouted above, Since you had not enabled Video or Audio for the stream. For video stream you must enable video:true.

Also make the below changes and let us know this work for you.

Thank you

 

It's my bad, I misunderstood you are only playing not publishing.