From d40d1bb547bd66a331e25cde8bcddbe25988139e Mon Sep 17 00:00:00 2001
From: David Zhao <david@davidzhao.com>
Date: Fri, 27 Aug 2021 15:37:44 -0700
Subject: [PATCH] avoid disposing attached media stream

---
 example/lib/room.dart                    | 1 +
 lib/src/widget/video_track_renderer.dart | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/example/lib/room.dart b/example/lib/room.dart
index f33fc36..d7b9667 100644
--- a/example/lib/room.dart
+++ b/example/lib/room.dart
@@ -155,6 +155,7 @@ class _RoomState extends State<RoomWidget> with RoomDelegate {
   }
 }
 
+// displays a participant in view
 class VideoView extends StatefulWidget {
   final Participant participant;
   final VideoQuality quality;
diff --git a/lib/src/widget/video_track_renderer.dart b/lib/src/widget/video_track_renderer.dart
index 325f753..ceebccd 100644
--- a/lib/src/widget/video_track_renderer.dart
+++ b/lib/src/widget/video_track_renderer.dart
@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_webrtc/flutter_webrtc.dart';
+
 import '../track/video_track.dart';
 import '../track/local_video_track.dart';
 
@@ -30,6 +31,7 @@ class _VideoTrackRendererState extends State<VideoTrackRenderer> {
   @override
   void dispose() {
     widget.track.removeListener(_trackChanged);
+    _renderer.srcObject = null;
     _renderer.dispose();
     super.dispose();
   }
@@ -38,6 +40,7 @@ class _VideoTrackRendererState extends State<VideoTrackRenderer> {
   void didUpdateWidget(covariant VideoTrackRenderer oldWidget) {
     oldWidget.track.removeListener(_trackChanged);
     widget.track.addListener(_trackChanged);
+    _trackChanged();
     super.didUpdateWidget(oldWidget);
   }