fix(prejoin): Don't add video track to connection on start if video muted

react/features/prejoin/actions.js

@@ -199,14 +199,13 @@ export function initPrejoin(tracks: Object[], errors: Object) {
 }
 
 /**
- * Joins the conference.
+ * Action used to start the conference.
  *
  * @returns {Function}
  */
 export function joinConference() {
-    return function(dispatch: Function) {
-        dispatch(setPrejoinPageVisibility(false));
-        dispatch(startConference());
+    return {
+        type: PREJOIN_START_CONFERENCE
     };
 }
 
@@ -418,14 +417,3 @@ export function setPrejoinPageVisibility(value: boolean) {
         value
     };
 }
-
-/**
- * Action used to mark the start of the conference.
- *
- * @returns {Object}
- */
-function startConference() {
-    return {
-        type: PREJOIN_START_CONFERENCE
-    };
-}

react/features/prejoin/middleware.js

@@ -2,8 +2,10 @@
 
 import { MiddlewareRegistry } from '../base/redux';
 import { updateSettings } from '../base/settings';
+import { getLocalVideoTrack, replaceLocalTrack } from '../base/tracks';
 
 import { PREJOIN_START_CONFERENCE } from './actionTypes';
+import { setPrejoinPageVisibility } from './actions';
 
 declare var APP: Object;
 
@@ -19,13 +21,20 @@ MiddlewareRegistry.register(store => next => async action => {
         const { getState, dispatch } = store;
         const state = getState();
         const { userSelectedSkipPrejoin } = state['features/prejoin'];
-        const tracks = state['features/base/tracks'];
+        const localVideoTrack = getLocalVideoTrack(state['features/base/tracks']);
 
         userSelectedSkipPrejoin && dispatch(updateSettings({
             userSelectedSkipPrejoin
         }));
 
-        APP.conference.prejoinStart(tracks.map(t => t.jitsiTrack));
+        if (localVideoTrack?.muted) {
+            await dispatch(replaceLocalTrack(localVideoTrack.jitsiTrack, null));
+        }
+
+        const jitsiTracks = getState()['features/base/tracks'].map(t => t.jitsiTrack);
+
+        dispatch(setPrejoinPageVisibility(false));
+        APP.conference.prejoinStart(jitsiTracks);
 
         break;
     }