diff --git a/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit.h b/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit.h
index 7b5710c3f..14ca344a7 100644
--- a/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit.h
+++ b/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit.h
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
@@ -46,7 +46,7 @@ public:
     static void Destroy(VideoCaptureModule* module);
 
     WebRtc_Word32 Init(const WebRtc_Word32 id,
-                       const char* deviceUniqueIdUTF8);
+                       const WebRtc_UWord8* deviceUniqueIdUTF8);
 
 
     // Start/Stop
@@ -72,9 +72,9 @@ private:
     WebRtc_Word32            _captureWidth;
     WebRtc_Word32            _captureHeight;
     WebRtc_Word32            _captureFrameRate;
-    char                     _currentDeviceNameUTF8[MAX_NAME_LENGTH];
-    char                     _currentDeviceUniqueIdUTF8[MAX_NAME_LENGTH];
-    char                     _currentDeviceProductUniqueIDUTF8[MAX_NAME_LENGTH];
+    WebRtc_UWord8            _currentDeviceNameUTF8[MAX_NAME_LENGTH];
+    WebRtc_UWord8            _currentDeviceUniqueIdUTF8[MAX_NAME_LENGTH];
+    WebRtc_UWord8            _currentDeviceProductUniqueIDUTF8[MAX_NAME_LENGTH];
     WebRtc_Word32            _frameCount;
 };
 }  // namespace videocapturemodule
diff --git a/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit.mm b/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit.mm
index 91e983d7e..c4a02c9a3 100644
--- a/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit.mm
+++ b/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit.mm
@@ -56,7 +56,7 @@ VideoCaptureMacQTKit::~VideoCaptureMacQTKit()
 }
 
 WebRtc_Word32 VideoCaptureMacQTKit::Init(
-    const WebRtc_Word32 id, const char* iDeviceUniqueIdUTF8)
+    const WebRtc_Word32 id, const WebRtc_UWord8* iDeviceUniqueIdUTF8)
 {
     CriticalSectionScoped cs(_apiCs);
 
@@ -67,7 +67,7 @@ WebRtc_Word32 VideoCaptureMacQTKit::Init(
         return -1;
 
     // Store the device name
-    _deviceUniqueId = new char[nameLength+1];
+    _deviceUniqueId = new WebRtc_UWord8[nameLength+1];
     memcpy(_deviceUniqueId, iDeviceUniqueIdUTF8,nameLength+1);
 
     _captureDevice = [[VideoCaptureMacQTKitObjC alloc] init];
@@ -108,9 +108,9 @@ WebRtc_Word32 VideoCaptureMacQTKit::Init(
     }
 
     const int NAME_LENGTH = 1024;
-    char deviceNameUTF8[1024] = "";
-    char deviceUniqueIdUTF8[1024] = "";
-    char deviceProductUniqueIDUTF8[1024] = "";
+    WebRtc_UWord8 deviceNameUTF8[1024] = "";
+    WebRtc_UWord8 deviceUniqueIdUTF8[1024] = "";
+    WebRtc_UWord8 deviceProductUniqueIDUTF8[1024] = "";
 
     bool captureDeviceFound = false;
     for(int index = 0; index < captureDeviceCount; index++){
diff --git a/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info.h b/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info.h
index 39847ea01..b6d05adef 100644
--- a/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info.h
+++ b/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info.h
@@ -46,23 +46,23 @@ public:
      *      otherwise.
      */
     virtual WebRtc_Word32 GetDeviceName(
-        WebRtc_UWord32 deviceNumber, char* deviceNameUTF8,
-        WebRtc_UWord32 deviceNameLength, char* deviceUniqueIdUTF8,
+        WebRtc_UWord32 deviceNumber, WebRtc_UWord8* deviceNameUTF8,
+        WebRtc_UWord32 deviceNameLength, WebRtc_UWord8* deviceUniqueIdUTF8,
         WebRtc_UWord32 deviceUniqueIdUTF8Length,
-        char* productUniqueIdUTF8 = 0,
+        WebRtc_UWord8* productUniqueIdUTF8 = 0,
         WebRtc_UWord32 productUniqueIdUTF8Length = 0);
 
     /*
      *   Returns the number of capabilities for this device
      */
     virtual WebRtc_Word32 NumberOfCapabilities(
-        const char* deviceUniqueIdUTF8);
+        const WebRtc_UWord8* deviceUniqueIdUTF8);
 
     /*
      *   Gets the capabilities of the named device
      */
     virtual WebRtc_Word32 GetCapability(
-        const char* deviceUniqueIdUTF8,
+        const WebRtc_UWord8* deviceUniqueIdUTF8,
         const WebRtc_UWord32 deviceCapabilityNumber,
         VideoCaptureCapability& capability);
 
@@ -71,7 +71,7 @@ public:
      *  Returns the deviceCapabilityNumber on success.
      */
     virtual WebRtc_Word32 GetBestMatchedCapability(
-        const char* deviceUniqueIdUTF8,
+        const WebRtc_UWord8*deviceUniqueIdUTF8,
         const VideoCaptureCapability& requested,
         VideoCaptureCapability& resulting);
 
@@ -79,13 +79,13 @@ public:
      * Display OS /capture device specific settings dialog
      */
     virtual WebRtc_Word32 DisplayCaptureSettingsDialogBox(
-        const char* deviceUniqueIdUTF8,
-        const char* dialogTitleUTF8, void* parentWindow,
+        const WebRtc_UWord8* deviceUniqueIdUTF8,
+        const WebRtc_UWord8* dialogTitleUTF8, void* parentWindow,
         WebRtc_UWord32 positionX, WebRtc_UWord32 positionY);
 
 protected:
     virtual WebRtc_Word32 CreateCapabilityMap(
-        const char* deviceUniqueIdUTF8);
+        const WebRtc_UWord8* deviceUniqueIdUTF8);
 
     VideoCaptureMacQTKitInfoObjC*    _captureInfo;
 };
diff --git a/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info.mm b/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info.mm
index 0da5be9da..b13a8ab80 100644
--- a/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info.mm
+++ b/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info.mm
@@ -47,9 +47,9 @@ WebRtc_UWord32 VideoCaptureMacQTKitInfo::NumberOfDevices()
 }
 
 WebRtc_Word32 VideoCaptureMacQTKitInfo::GetDeviceName(
-    WebRtc_UWord32 deviceNumber, char* deviceNameUTF8,
-    WebRtc_UWord32 deviceNameLength, char* deviceUniqueIdUTF8,
-    WebRtc_UWord32 deviceUniqueIdUTF8Length, char* productUniqueIdUTF8,
+    WebRtc_UWord32 deviceNumber, WebRtc_UWord8* deviceNameUTF8,
+    WebRtc_UWord32 deviceNameLength, WebRtc_UWord8* deviceUniqueIdUTF8,
+    WebRtc_UWord32 deviceUniqueIdUTF8Length, WebRtc_UWord8* productUniqueIdUTF8,
     WebRtc_UWord32 productUniqueIdUTF8Length)
 {
     int errNum = [[_captureInfo getDeviceNamesFromIndex:deviceNumber
@@ -62,7 +62,7 @@ WebRtc_Word32 VideoCaptureMacQTKitInfo::GetDeviceName(
 }
 
 WebRtc_Word32 VideoCaptureMacQTKitInfo::NumberOfCapabilities(
-    const char* deviceUniqueIdUTF8)
+    const WebRtc_UWord8* deviceUniqueIdUTF8)
 {
     // Not implemented. Mac doesn't use discrete steps in capabilities, rather
     // "analog". QTKit will do it's best to convert frames to what ever format
@@ -74,7 +74,7 @@ WebRtc_Word32 VideoCaptureMacQTKitInfo::NumberOfCapabilities(
 
 
 WebRtc_Word32 VideoCaptureMacQTKitInfo::GetCapability(
-    const char* deviceUniqueIdUTF8,
+    const WebRtc_UWord8* deviceUniqueIdUTF8,
     const WebRtc_UWord32 deviceCapabilityNumber,
     VideoCaptureCapability& capability)
 {
@@ -88,7 +88,7 @@ WebRtc_Word32 VideoCaptureMacQTKitInfo::GetCapability(
 
 
 WebRtc_Word32 VideoCaptureMacQTKitInfo::GetBestMatchedCapability(
-    const char* deviceUniqueIdUTF8,
+    const WebRtc_UWord8*deviceUniqueIdUTF8,
     const VideoCaptureCapability& requested, VideoCaptureCapability& resulting)
 {
     // Not implemented. Mac doesn't use discrete steps in capabilities, rather
@@ -100,8 +100,8 @@ WebRtc_Word32 VideoCaptureMacQTKitInfo::GetBestMatchedCapability(
 }
 
 WebRtc_Word32 VideoCaptureMacQTKitInfo::DisplayCaptureSettingsDialogBox(
-    const char* deviceUniqueIdUTF8,
-    const char* dialogTitleUTF8, void* parentWindow,
+    const WebRtc_UWord8* deviceUniqueIdUTF8,
+    const WebRtc_UWord8* dialogTitleUTF8, void* parentWindow,
     WebRtc_UWord32 positionX, WebRtc_UWord32 positionY)
 {
 
@@ -113,7 +113,7 @@ WebRtc_Word32 VideoCaptureMacQTKitInfo::DisplayCaptureSettingsDialogBox(
 }
 
 WebRtc_Word32 VideoCaptureMacQTKitInfo::CreateCapabilityMap(
-    const char* deviceUniqueIdUTF8)
+    const WebRtc_UWord8* deviceUniqueIdUTF8)
 {
     // Not implemented. Mac doesn't use discrete steps in capabilities, rather
     // "analog". QTKit will do it's best to convert frames to what ever format
diff --git a/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info_objc.h b/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info_objc.h
index a77a6daaf..1d3ac8688 100644
--- a/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info_objc.h
+++ b/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info_objc.h
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
@@ -49,16 +49,16 @@
 - (NSNumber*)getCaptureDeviceCount;
 
 - (NSNumber*)getDeviceNamesFromIndex:(WebRtc_UWord32)index
-    DefaultName:(char*)deviceName
+    DefaultName:(WebRtc_UWord8*)deviceName
     WithLength:(WebRtc_UWord32)deviceNameLength
-    AndUniqueID:(char*)deviceUniqueID
+    AndUniqueID:(WebRtc_UWord8*)deviceUniqueID
     WithLength:(WebRtc_UWord32)deviceUniqueIDLength
-    AndProductID:(char*)deviceProductID
+    AndProductID:(WebRtc_UWord8*)deviceProductID
     WithLength:(WebRtc_UWord32)deviceProductIDLength;
 
 - (NSNumber*)displayCaptureSettingsDialogBoxWithDevice:
-        (const char*)deviceUniqueIdUTF8
-    AndTitle:(const char*)dialogTitleUTF8
+        (const WebRtc_UWord8*)deviceUniqueIdUTF8
+    AndTitle:(const WebRtc_UWord8*)dialogTitleUTF8
     AndParentWindow:(void*) parentWindow AtX:(WebRtc_UWord32)positionX
     AndY:(WebRtc_UWord32) positionY;
 @end
diff --git a/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info_objc.mm b/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info_objc.mm
index 0e4c06bc0..57ab3d095 100644
--- a/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info_objc.mm
+++ b/src/modules/video_capture/main/source/Mac/QTKit/video_capture_qtkit_info_objc.mm
@@ -49,12 +49,11 @@ using namespace webrtc;
 
 /// ***** Creates a message box with Cocoa framework
 /// ***** Returns 0 on success, -1 otherwise.
-- (NSNumber*)displayCaptureSettingsDialogBoxWithDevice:
-        (const char*)deviceUniqueIdUTF8
-        AndTitle:(const char*)dialogTitleUTF8
-        AndParentWindow:(void*) parentWindow
-        AtX:(WebRtc_UWord32)positionX
-        AndY:(WebRtc_UWord32) positionY
+- (NSNumber*)displayCaptureSettingsDialogBoxWithDevice:(const WebRtc_UWord8*)deviceUniqueIdUTF8
+                    AndTitle:(const WebRtc_UWord8*)dialogTitleUTF8
+                    AndParentWindow:(void*) parentWindow
+                    AtX:(WebRtc_UWord32)positionX
+                    AndY:(WebRtc_UWord32) positionY
 {
     NSString* strTitle = [NSString stringWithFormat:@"%s", dialogTitleUTF8];
     NSString* strButton = @"Alright";
@@ -75,11 +74,11 @@ using namespace webrtc;
 
 
 - (NSNumber*)getDeviceNamesFromIndex:(WebRtc_UWord32)index
-    DefaultName:(char*)deviceName
+    DefaultName:(WebRtc_UWord8*)deviceName
     WithLength:(WebRtc_UWord32)deviceNameLength
-    AndUniqueID:(char*)deviceUniqueID
+    AndUniqueID:(WebRtc_UWord8*)deviceUniqueID
     WithLength:(WebRtc_UWord32)deviceUniqueIDLength
-    AndProductID:(char*)deviceProductID
+    AndProductID:(WebRtc_UWord8*)deviceProductID
     WithLength:(WebRtc_UWord32)deviceProductIDLength
 {
     if(NO == _OSSupportedInfo)
diff --git a/src/modules/video_capture/main/source/Mac/QuickTime/video_capture_quick_time.cc b/src/modules/video_capture/main/source/Mac/QuickTime/video_capture_quick_time.cc
index b9d7bed2d..f70923eda 100644
--- a/src/modules/video_capture/main/source/Mac/QuickTime/video_capture_quick_time.cc
+++ b/src/modules/video_capture/main/source/Mac/QuickTime/video_capture_quick_time.cc
@@ -65,7 +65,7 @@ VideoCaptureMacQuickTime::~VideoCaptureMacQuickTime()
 }
 
 WebRtc_Word32 VideoCaptureMacQuickTime::Init(
-    const WebRtc_Word32 id, const char* deviceUniqueIdUTF8)
+    const WebRtc_Word32 id, const WebRtc_UWord8* deviceUniqueIdUTF8)
 {
 
     const WebRtc_Word32 nameLength =
@@ -74,7 +74,7 @@ WebRtc_Word32 VideoCaptureMacQuickTime::Init(
         return -1;
 
     // Store the device name
-    _deviceUniqueId = new char[nameLength + 1];
+    _deviceUniqueId = new WebRtc_UWord8[nameLength + 1];
     memset(_deviceUniqueId, 0, nameLength + 1);
     memcpy(_deviceUniqueId, deviceUniqueIdUTF8, nameLength + 1);
 
diff --git a/src/modules/video_capture/main/source/Mac/QuickTime/video_capture_quick_time_info.cc b/src/modules/video_capture/main/source/Mac/QuickTime/video_capture_quick_time_info.cc
index 152ab7036..4f3cc1a5c 100644
--- a/src/modules/video_capture/main/source/Mac/QuickTime/video_capture_quick_time_info.cc
+++ b/src/modules/video_capture/main/source/Mac/QuickTime/video_capture_quick_time_info.cc
@@ -48,9 +48,9 @@ WebRtc_UWord32 VideoCaptureMacQuickTimeInfo::NumberOfDevices()
 
     // don't care about these variables... dummy vars to call GetCaptureDevices
     const int kNameLength = 1024;
-    char deviceNameUTF8[kNameLength] = "";
-    char deviceUniqueIdUTF8[kNameLength] = "";
-    char productUniqueIdUTF8[kNameLength] = "";
+    WebRtc_UWord8 deviceNameUTF8[kNameLength] = "";
+    WebRtc_UWord8 deviceUniqueIdUTF8[kNameLength] = "";
+    WebRtc_UWord8 productUniqueIdUTF8[kNameLength] = "";
 
     if (GetCaptureDevices(0, deviceNameUTF8, kNameLength, deviceUniqueIdUTF8,
                           kNameLength, productUniqueIdUTF8, kNameLength,
@@ -63,9 +63,9 @@ WebRtc_UWord32 VideoCaptureMacQuickTimeInfo::NumberOfDevices()
 }
 
 WebRtc_Word32 VideoCaptureMacQuickTimeInfo::GetDeviceName(
-    WebRtc_UWord32 deviceNumber, char* deviceNameUTF8,
-    WebRtc_UWord32 deviceNameUTF8Length, char* deviceUniqueIdUTF8,
-    WebRtc_UWord32 deviceUniqueIdUTF8Length, char* productUniqueIdUTF8,
+    WebRtc_UWord32 deviceNumber, WebRtc_UWord8* deviceNameUTF8,
+    WebRtc_UWord32 deviceNameUTF8Length, WebRtc_UWord8* deviceUniqueIdUTF8,
+    WebRtc_UWord32 deviceUniqueIdUTF8Length, WebRtc_UWord8* productUniqueIdUTF8,
     WebRtc_UWord32 productUniqueIdUTF8Length)
 {
 
@@ -77,7 +77,7 @@ WebRtc_Word32 VideoCaptureMacQuickTimeInfo::GetDeviceName(
 }
 
 WebRtc_Word32 VideoCaptureMacQuickTimeInfo::NumberOfCapabilities(
-    const char* deviceUniqueIdUTF8)
+    const WebRtc_UWord8* deviceUniqueIdUTF8)
 {
     WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, _id,
                  "NumberOfCapabilities is not supported on the Mac platform.");
@@ -85,7 +85,7 @@ WebRtc_Word32 VideoCaptureMacQuickTimeInfo::NumberOfCapabilities(
 }
 
 WebRtc_Word32 VideoCaptureMacQuickTimeInfo::GetCapability(
-    const char* deviceUniqueIdUTF8,
+    const WebRtc_UWord8* deviceUniqueIdUTF8,
     const WebRtc_UWord32 deviceCapabilityNumber,
     VideoCaptureCapability& capability)
 {
@@ -95,7 +95,7 @@ WebRtc_Word32 VideoCaptureMacQuickTimeInfo::GetCapability(
 }
 
 WebRtc_Word32 VideoCaptureMacQuickTimeInfo::GetBestMatchedCapability(
-    const char*deviceUniqueIdUTF8,
+    const WebRtc_UWord8*deviceUniqueIdUTF8,
     const VideoCaptureCapability& requested, VideoCaptureCapability& resulting)
 {
     WEBRTC_TRACE(webrtc::kTraceInfo, webrtc::kTraceVideoCapture, _id,
@@ -104,15 +104,15 @@ WebRtc_Word32 VideoCaptureMacQuickTimeInfo::GetBestMatchedCapability(
 }
 
 WebRtc_Word32 VideoCaptureMacQuickTimeInfo::DisplayCaptureSettingsDialogBox(
-    const char* deviceUniqueIdUTF8,
-    const char* dialogTitleUTF8, void* parentWindow,
+    const WebRtc_UWord8* deviceUniqueIdUTF8,
+    const WebRtc_UWord8* dialogTitleUTF8, void* parentWindow,
     WebRtc_UWord32 positionX, WebRtc_UWord32 positionY)
 {
      return -1;
 }
 
 WebRtc_Word32 VideoCaptureMacQuickTimeInfo::CreateCapabilityMap(
-    const char* deviceUniqueIdUTF8)
+    const WebRtc_UWord8* deviceUniqueIdUTF8)
 {
     WEBRTC_TRACE(webrtc::kTraceInfo, webrtc::kTraceVideoCapture, _id,
                  "NumberOfCapabilities is not supported on the Mac platform.");
@@ -120,9 +120,9 @@ WebRtc_Word32 VideoCaptureMacQuickTimeInfo::CreateCapabilityMap(
 }
 
 int VideoCaptureMacQuickTimeInfo::GetCaptureDevices(
-    WebRtc_UWord32 deviceNumber, char* deviceNameUTF8,
-    WebRtc_UWord32 deviceNameUTF8Length, char* deviceUniqueIdUTF8,
-    WebRtc_UWord32 deviceUniqueIdUTF8Length, char* productUniqueIdUTF8,
+    WebRtc_UWord32 deviceNumber, WebRtc_UWord8* deviceNameUTF8,
+    WebRtc_UWord32 deviceNameUTF8Length, WebRtc_UWord8* deviceUniqueIdUTF8,
+    WebRtc_UWord32 deviceUniqueIdUTF8Length, WebRtc_UWord8* productUniqueIdUTF8,
     WebRtc_UWord32 productUniqueIdUTF8Length, int& numberOfDevices)
 {
 
diff --git a/src/modules/video_capture/main/source/Mac/QuickTime/video_capture_quick_time_info.h b/src/modules/video_capture/main/source/Mac/QuickTime/video_capture_quick_time_info.h
index 7557c6c4d..5114d116b 100644
--- a/src/modules/video_capture/main/source/Mac/QuickTime/video_capture_quick_time_info.h
+++ b/src/modules/video_capture/main/source/Mac/QuickTime/video_capture_quick_time_info.h
@@ -56,10 +56,10 @@ public:
      *                       otherwise.
      */
     virtual WebRtc_Word32 GetDeviceName(
-        WebRtc_UWord32 deviceNumber, char* deviceNameUTF8,
-        WebRtc_UWord32 deviceNameLength, char* deviceUniqueIdUTF8,
+        WebRtc_UWord32 deviceNumber, WebRtc_UWord8* deviceNameUTF8,
+        WebRtc_UWord32 deviceNameLength, WebRtc_UWord8* deviceUniqueIdUTF8,
         WebRtc_UWord32 deviceUniqueIdUTF8Length,
-        char* productUniqueIdUTF8 = 0,
+        WebRtc_UWord8* productUniqueIdUTF8 = 0,
         WebRtc_UWord32 productUniqueIdUTF8Length = 0);
 
 
@@ -68,13 +68,13 @@ public:
     /*
      *   Returns the number of capabilities for this device
      */
-    virtual WebRtc_Word32 NumberOfCapabilities(const char* deviceUniqueIdUTF8);
+    virtual WebRtc_Word32 NumberOfCapabilities(const WebRtc_UWord8* deviceUniqueIdUTF8);
 
     /*
      *   Gets the capabilities of the named device
      */
     virtual WebRtc_Word32 GetCapability(
-        const char* deviceUniqueIdUTF8,
+        const WebRtc_UWord8* deviceUniqueIdUTF8,
         const WebRtc_UWord32 deviceCapabilityNumber,
         VideoCaptureCapability& capability);
 
@@ -83,7 +83,7 @@ public:
      *  Returns the deviceCapabilityNumber on success.
      */
     virtual WebRtc_Word32 GetBestMatchedCapability(
-        const char*deviceUniqueIdUTF8,
+        const WebRtc_UWord8*deviceUniqueIdUTF8,
         const VideoCaptureCapability& requested,
         VideoCaptureCapability& resulting);
 
@@ -91,13 +91,13 @@ public:
      * Display OS /capture device specific settings dialog
      */
     virtual WebRtc_Word32 DisplayCaptureSettingsDialogBox(
-        const char* deviceUniqueIdUTF8,
-        const char* dialogTitleUTF8, void* parentWindow,
+        const WebRtc_UWord8* deviceUniqueIdUTF8,
+        const WebRtc_UWord8* dialogTitleUTF8, void* parentWindow,
         WebRtc_UWord32 positionX, WebRtc_UWord32 positionY);
 
 protected:
     virtual WebRtc_Word32 CreateCapabilityMap(
-        const char* deviceUniqueIdUTF8);
+        const WebRtc_UWord8* deviceUniqueIdUTF8);
 
 private:
 
@@ -126,11 +126,11 @@ private:
     // private methods
 
     int GetCaptureDevices(WebRtc_UWord32 deviceNumber,
-                          char* deviceNameUTF8,
+                          WebRtc_UWord8* deviceNameUTF8,
                           WebRtc_UWord32 deviceNameUTF8Length,
-                          char* deviceUniqueIdUTF8,
+                          WebRtc_UWord8* deviceUniqueIdUTF8,
                           WebRtc_UWord32 deviceUniqueIdUTF8Length,
-                          char* productUniqueIdUTF8,
+                          WebRtc_UWord8* productUniqueIdUTF8,
                           WebRtc_UWord32 productUniqueIdUTF8Length,
                           int& numberOfDevices);
 
diff --git a/src/modules/video_capture/main/source/Mac/video_capture_mac.mm b/src/modules/video_capture/main/source/Mac/video_capture_mac.mm
index 6ed9ddbf8..d32993672 100644
--- a/src/modules/video_capture/main/source/Mac/video_capture_mac.mm
+++ b/src/modules/video_capture/main/source/Mac/video_capture_mac.mm
@@ -113,7 +113,7 @@ bool CheckQTVersion()
  */
 
 VideoCaptureModule* VideoCaptureImpl::Create(
-    const WebRtc_Word32 id, const char* deviceUniqueIdUTF8)
+    const WebRtc_Word32 id, const WebRtc_UWord8* deviceUniqueIdUTF8)
 {
 
     if (webrtc::videocapturemodule::CheckOSVersion() == false)