MediaRecorder hint enabled for all Android devices with API level 14 and above.

It increases performance on some devices like Nexus4.
Target Android SDK version increased up to 14.

modules/java/CMakeLists.txt

@@ -193,7 +193,7 @@ if(ANDROID AND ANDROID_EXECUTABLE)
   set(lib_target_files ${ANDROID_LIB_PROJECT_FILES})
   ocv_list_add_prefix(lib_target_files "${OpenCV_BINARY_DIR}/")
 
-  android_get_compatible_target(lib_target_sdk_target ${ANDROID_NATIVE_API_LEVEL} ${ANDROID_SDK_TARGET} 11)
+  android_get_compatible_target(lib_target_sdk_target ${ANDROID_NATIVE_API_LEVEL} ${ANDROID_SDK_TARGET} 14)
   configure_file("${CMAKE_CURRENT_SOURCE_DIR}/android_lib/${ANDROID_MANIFEST_FILE}" "${CMAKE_CURRENT_BINARY_DIR}/${ANDROID_MANIFEST_FILE}" @ONLY)
 
   add_custom_command(OUTPUT ${lib_target_files} "${OpenCV_BINARY_DIR}/${ANDROID_MANIFEST_FILE}"

modules/java/generator/src/java/android+JavaCameraView.java

@@ -146,6 +146,9 @@ public class JavaCameraView extends CameraBridgeViewBase implements PreviewCallb
                     Log.d(TAG, "Set preview size to " + Integer.valueOf((int)frameSize.width) + "x" + Integer.valueOf((int)frameSize.height));
                     params.setPreviewSize((int)frameSize.width, (int)frameSize.height);
 
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH)
+                        params.setRecordingHint(true);
+
                     List<String> FocusModes = params.getSupportedFocusModes();
                     if (FocusModes != null && FocusModes.contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO))
                     {