diff --git a/react/src/pages/AntMedia.js b/react/src/pages/AntMedia.js
index 17393b40..0866daf2 100644
--- a/react/src/pages/AntMedia.js
+++ b/react/src/pages/AntMedia.js
@@ -85,6 +85,7 @@ function getMediaConstraints(videoSendResolution, frameRate) {
             };
             break;
         default:
+            constraint = { video: true };
             break;
     }
 
@@ -1277,6 +1278,11 @@ function AntMedia(props) {
     useEffect(() => {
         if (devices.length > 0) {
             checkAndUpdateVideoAudioSources();
+        } else {
+            mediaConstraints = getMediaConstraints(null, 20);
+            navigator.mediaDevices.enumerateDevices().then(devices => {
+                setDevices(devices);
+            });
         }
     }, [devices]); // eslint-disable-line react-hooks/exhaustive-deps