diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
index 38100a6..8e92e15 100644
--- a/Source/WebCore/ChangeLog
+++ b/Source/WebCore/ChangeLog
@@ -1,3 +1,20 @@
+2019-07-16  Youenn Fablet  <youenn@apple.com>
+
+        [iOS] Make sure the first camera device in the list is the front camera
+        https://bugs.webkit.org/show_bug.cgi?id=199811
+        <rdar://problem/53125157>
+
+        Reviewed by Jer Noble.
+
+        Some websites call getUserMedia with a deviceId constraint and theey pick the
+        first deviceId in the list provided by enumerateDevices.
+        On iOS, this is the back camera which is often not what is expected by WebRTC applications.
+        Instead, make sure the first camera device is the front camera.
+
+        Manually tested.
+
+        * platform/mediastream/mac/AVCaptureDeviceManager.mm:
+
 2019-07-16  Chris Dumez  <cdumez@apple.com>
 
         Speed up StorageManager::getValues()
diff --git a/Source/WebCore/platform/mediastream/mac/AVCaptureDeviceManager.mm b/Source/WebCore/platform/mediastream/mac/AVCaptureDeviceManager.mm
index 50e4596..2fdc866 100644
--- a/Source/WebCore/platform/mediastream/mac/AVCaptureDeviceManager.mm
+++ b/Source/WebCore/platform/mediastream/mac/AVCaptureDeviceManager.mm
@@ -145,6 +145,11 @@
     return devices[0].persistentId() == defaultDeviceID;
 }
 
+static inline bool isVideoDevice(AVCaptureDevice *device)
+{
+    return [device hasMediaType:AVMediaTypeVideo] || [device hasMediaType:AVMediaTypeMuxed];
+}
+
 void AVCaptureDeviceManager::refreshCaptureDevices()
 {
     if (!m_avCaptureDevices) {
@@ -158,6 +163,20 @@
     Vector<CaptureDevice> deviceList;
 
     auto* defaultVideoDevice = [PAL::getAVCaptureDeviceClass() defaultDeviceWithMediaType: AVMediaTypeVideo];
+#if PLATFORM(IOS)
+    if ([defaultVideoDevice position] != AVCaptureDevicePositionFront) {
+        defaultVideoDevice = nullptr;
+        for (AVCaptureDevice *platformDevice in currentDevices) {
+            if (!isVideoDevice(platformDevice))
+                continue;
+
+            if ([platformDevice position] == AVCaptureDevicePositionFront) {
+                defaultVideoDevice = platformDevice;
+                break;
+            }
+        }
+    }
+#endif
 
     bool deviceHasChanged = false;
     if (defaultVideoDevice) {
@@ -165,7 +184,7 @@
         deviceHasChanged = !isDefaultVideoCaptureDeviceFirst(captureDevices(), defaultVideoDevice.uniqueID);
     }
     for (AVCaptureDevice *platformDevice in currentDevices) {
-        if (![platformDevice hasMediaType:AVMediaTypeVideo] && ![platformDevice hasMediaType:AVMediaTypeMuxed])
+        if (!isVideoDevice(platformDevice))
             continue;
 
         if (!deviceHasChanged && !isMatchingExistingCaptureDevice(platformDevice))