Use vp8 codec

resources/views/app/video/call-agora-v2.blade.php

@@ -439,7 +439,7 @@
                     },
                     initMediaService: function() {
 
-                        this.mediaServiceClient = AgoraRTC.createClient({mode:'rtc', codec:'h264'})
+                        this.mediaServiceClient = AgoraRTC.createClient({mode:'rtc', codec:'vp8'})
 
                         async function _acquireMicrophone() {
                             this.myMedia.isMicrophoneAcquired = false;