diff --git a/python/pyproject.toml b/python/pyproject.toml
new file mode 100644
index 000000000..5f5b2a626
--- /dev/null
+++ b/python/pyproject.toml
@@ -0,0 +1,36 @@
+# Specify the build system requirements.
+[build-system]
+requires = ["sip >=5.3, <7", "PyQt-builder >=1.9, <2"]
+build-backend = "sipbuild.api"
+
+# Specify the PEP 566 metadata for the project.
+[tool.sip.metadata]
+name = "PyQtAV"
+version = "1.12.0"
+summary = "Python bindings for the QtAV"
+home-page = ""
+author = ""
+author-email = ""
+license = "LGPL"
+
+# Specify a PyQt-based project.
+[tool.sip]
+project-factory = "pyqtbuild:PyQtProject"
+
+# Configure the project.
+[tool.sip.project]
+tag-prefix = "QtAV"
+sip-include-dirs = [PYQT_BINDINGS_DIR]
+
+# Define and configure each set of bindings.
+[tool.sip.bindings.QtAV]
+qmake-QT = ["widgets"]
+include-dirs = [INCLUDE_DIRS]
+libraries = [QTAV_LIB]
+library-dirs = [LIB_DIRS]
+
+[tool.sip.bindings.QtAVWidgets]
+qmake-QT = ["widgets", "opengl", "openglwidgets"]
+include-dirs = [INCLUDE_DIRS]
+libraries = [QTAV_LIB, QTAV_WIDGETS_LIB]
+library-dirs = [LIB_DIRS]
diff --git a/python/sip/QtAV/VideoFormat.sip b/python/sip/QtAV/VideoFormat.sip
index 3d2515cd3..394f09e19 100644
--- a/python/sip/QtAV/VideoFormat.sip
+++ b/python/sip/QtAV/VideoFormat.sip
@@ -104,7 +104,6 @@ public:
     static QImage::Format imageFormatFromPixelFormat(PixelFormat format);
     static PixelFormat pixelFormatFromFFmpeg(int ff); //AVPixelFormat
     static int pixelFormatToFFmpeg(PixelFormat fmt);
-    static QVector<int> pixelFormatsFFmpeg();
 
     VideoFormat(PixelFormat format = Format_Invalid);
     VideoFormat(int formatFF /Constrained/);
diff --git a/python/sip/QtAVWidgets/GLWidgetRenderer2.sip b/python/sip/QtAVWidgets/GLWidgetRenderer2.sip
deleted file mode 100644
index 81bebe5e6..000000000
--- a/python/sip/QtAVWidgets/GLWidgetRenderer2.sip
+++ /dev/null
@@ -1,64 +0,0 @@
-namespace QtAV
-{
-
-class GLWidgetRenderer2 : public QGLWidget, public QtAV::OpenGLRendererBase
-{
-%TypeHeaderCode
-#include <QtAVWidgets/GLWidgetRenderer2.h>
-%End
-
-public:
-    void setBrightness(qreal brightness);
-    qreal brightness();
-    void setContrast(qreal contrast);
-    qreal contrast();
-    void setHue(qreal hue);
-    qreal hue();
-    void setSaturation(qreal saturation);
-    qreal saturation();
-    void setBackgroundColor(QColor color);
-    QColor backgroundColor();
-
-    QRectF regionOfInterest();
-    void setRegionOfInterest(QRectF region);
-    qreal sourceAspectRatio();
-    qreal outAspectRatio();
-    void setOutAspectRatio(qreal ratio);
-    OutAspectRatioMode outAspectRatioMode();
-    void setOutAspectRatioMode(OutAspectRatioMode mode);
-
-    int orientation();
-    void setOrientation(int orientation);
-    QRect videoRect();
-    QSize videoFrameSize();
-
-public:
-    GLWidgetRenderer2(QWidget* parent /TransferThis/ = 0, const QGLWidget* shareWidget = 0, Qt::WindowFlags f = 0);
-    virtual VideoRendererId id();
-    virtual QWidget* widget();
-
-signals:
-    void sourceAspectRatioChanged(qreal value) final;
-    void regionOfInterestChanged();
-    void outAspectRatioChanged();
-    void outAspectRatioModeChanged();
-    void brightnessChanged(qreal value);
-    void contrastChanged(qreal);
-    void hueChanged(qreal);
-    void saturationChanged(qreal);
-    void orientationChanged();
-    void videoRectChanged();
-    void videoFrameSizeChanged();
-    void backgroundColorChanged();
-
-protected:
-    virtual void initializeGL();
-    virtual void paintGL();
-    virtual void resizeGL(int w, int h);
-    virtual void resizeEvent(QResizeEvent *);  // not virtual in QGLWidget (Qt<5.5)
-    virtual void showEvent(QShowEvent *);
-
-};
-typedef GLWidgetRenderer2 VideoRendererGLWidget2;
-
-};
diff --git a/python/sip/QtAVWidgets/GraphicsItemRenderer.sip b/python/sip/QtAVWidgets/GraphicsItemRenderer.sip
index fbc520f52..75348448b 100644
--- a/python/sip/QtAVWidgets/GraphicsItemRenderer.sip
+++ b/python/sip/QtAVWidgets/GraphicsItemRenderer.sip
@@ -34,7 +34,7 @@ public:
 
 public:
     GraphicsItemRenderer(QGraphicsItem* parent /TransferThis/ = 0);
-    virtual VideoRendererId id();
+    VideoRendererId id();
 
     bool isSupported(VideoFormat::PixelFormat pixfmt);
 
diff --git a/python/sip/QtAVWidgets/OpenGLWidgetRenderer.sip b/python/sip/QtAVWidgets/OpenGLWidgetRenderer.sip
index 38844862d..9edb5e8b7 100644
--- a/python/sip/QtAVWidgets/OpenGLWidgetRenderer.sip
+++ b/python/sip/QtAVWidgets/OpenGLWidgetRenderer.sip
@@ -33,8 +33,8 @@ public:
     QSize videoFrameSize();
 
 public:
-    explicit OpenGLWidgetRenderer(QWidget* parent /TransferThis/ = 0, Qt::WindowFlags f = 0);
-    virtual VideoRendererId id();
+    explicit OpenGLWidgetRenderer(QWidget* parent /TransferThis/ = 0, Qt::WindowFlags f = Qt::WindowFlags());
+    VideoRendererId id() const;
     virtual QWidget* widget();
 
 signals:
diff --git a/python/sip/QtAVWidgets/QtAVWidgetsmod.sip b/python/sip/QtAVWidgets/QtAVWidgetsmod.sip
index 0df00da0c..f42fa3781 100644
--- a/python/sip/QtAVWidgets/QtAVWidgetsmod.sip
+++ b/python/sip/QtAVWidgets/QtAVWidgetsmod.sip
@@ -3,6 +3,7 @@
 %Import QtGui/QtGuimod.sip
 %Import QtWidgets/QtWidgetsmod.sip
 %Import QtOpenGL/QtOpenGLmod.sip
+%Import QtOpenGLWidgets/QtOpenGLWidgetsmod.sip
 %Import QtAV/QtAVmod.sip
 
 %Timeline {QtAVWidgets_1_11_0 QtAVWidgets_1_12_0}
@@ -35,7 +36,6 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 %Include global.sip
 
 %If (FULL_QTWIDGETS_API)
-%Include GLWidgetRenderer2.sip
 %Include GraphicsItemRenderer.sip
 // NOTE: We don't expose QOpenGLWidget because it is present in Qt >= 5.4.0
 %Include OpenGLWidgetRenderer.sip
diff --git a/python/sip/QtAVWidgets/WidgetRenderer.sip b/python/sip/QtAVWidgets/WidgetRenderer.sip
index 5f2561b93..96740a0f0 100644
--- a/python/sip/QtAVWidgets/WidgetRenderer.sip
+++ b/python/sip/QtAVWidgets/WidgetRenderer.sip
@@ -23,8 +23,8 @@ public:
     QSize videoFrameSize();
 
 public:
-    WidgetRenderer(QWidget* parent /TransferThis/ = 0, Qt::WindowFlags f = 0);
-    virtual VideoRendererId id();
+    WidgetRenderer(QWidget* parent /TransferThis/ = 0, Qt::WindowFlags f = Qt::WindowFlags());
+    VideoRendererId id();
     virtual QWidget* widget();
 
 signals:
diff --git a/src/AVError.cpp b/src/AVError.cpp
index 5f7b3fe37..a83d0a6d1 100644
--- a/src/AVError.cpp
+++ b/src/AVError.cpp
@@ -20,6 +20,7 @@
 ******************************************************************************/
 #include "QtAV/AVError.h"
 #include "QtAV/private/AVCompat.h"
+#include <QtCore/QObject>
 #ifndef QT_NO_DEBUG_STREAM
 #include <QtCore/qdebug.h>
 #endif
diff --git a/src/codec/video/VideoDecoderDXVA.cpp b/src/codec/video/VideoDecoderDXVA.cpp
index 64b12f33d..c8722127a 100644
--- a/src/codec/video/VideoDecoderDXVA.cpp
+++ b/src/codec/video/VideoDecoderDXVA.cpp
@@ -29,7 +29,6 @@
 //#include "QtAV/private/mkid.h"
 #include "utils/Logger.h"
 #include "directx/SurfaceInteropD3D9.h"
-#include <QtCore/QSysInfo>
 #define DX_LOG_COMPONENT "DXVA2"
 #include "utils/DirectXHelper.h"
 
@@ -98,7 +97,7 @@ class VideoDecoderDXVAPrivate Q_DECL_FINAL: public VideoDecoderD3DPrivate
         VideoDecoderD3DPrivate()
     {
         // d3d9+gl interop may not work on optimus moble platforms, 0-copy is enabled only for egl interop
-        if (d3d9::InteropResource::isSupported(d3d9::InteropEGL) && QSysInfo::windowsVersion() >= QSysInfo::WV_VISTA)
+        if (d3d9::InteropResource::isSupported(d3d9::InteropEGL))
             copy_mode = VideoDecoderFFmpegHW::ZeroCopy;
 
         hd3d9_dll = 0;
@@ -269,9 +268,9 @@ bool VideoDecoderDXVAPrivate::createDevice()
         return false;
     }
     vendor = QString::fromLatin1(DXHelper::vendorName(d3dai.VendorId));
-    description = QString().sprintf("DXVA2 (%.*s, vendor %lu(%s), device %lu, revision %lu)",
-                                    sizeof(d3dai.Description), d3dai.Description,
-                                    d3dai.VendorId, qPrintable(vendor), d3dai.DeviceId, d3dai.Revision);
+    description = QString().asprintf("DXVA2 (%.*s, vendor %lu(%s), device %lu, revision %lu)",
+                                     sizeof(d3dai.Description), d3dai.Description,
+                                     d3dai.VendorId, qPrintable(vendor), d3dai.DeviceId, d3dai.Revision);
 
     //if (copy_uswc)
       //  copy_uswc = vendor.toLower() == "intel";
diff --git a/src/cuda/cuda_api.cpp b/src/cuda/cuda_api.cpp
index c37d25e2d..32dce6774 100644
--- a/src/cuda/cuda_api.cpp
+++ b/src/cuda/cuda_api.cpp
@@ -108,7 +108,7 @@ class cuda_api::context {
 
     QLibrary cuda_dll;
     QLibrary cuvid_dll;
-    typedef struct {
+    typedef struct cuda_api {
         typedef CUresult CUDAAPI tcuGetErrorName(CUresult error, const char **pStr);
         tcuGetErrorName* cuGetErrorName;
         typedef CUresult CUDAAPI tcuGetErrorString(CUresult error, const char **pStr);
diff --git a/src/filter/X11FilterContext.cpp b/src/filter/X11FilterContext.cpp
index 849d1fb08..8e3d84d36 100644
--- a/src/filter/X11FilterContext.cpp
+++ b/src/filter/X11FilterContext.cpp
@@ -182,7 +182,7 @@ void X11FilterContext::drawPlainText(const QPointF &pos, const QString &text)
     this->plain = true;
 
     QFontMetrics fm(font);
-    text_q = QImage(fm.width(text), fm.height(), QImage::Format_ARGB32);
+    text_q = QImage(fm.horizontalAdvance(text), fm.height(), QImage::Format_ARGB32);
     text_q.fill(0);
     painter->begin(&text_q);
     painter->translate(0, 0);
diff --git a/src/libQtAV.pro b/src/libQtAV.pro
index c6cbcc374..eaf2419db 100644
--- a/src/libQtAV.pro
+++ b/src/libQtAV.pro
@@ -3,7 +3,7 @@ MODULE_INCNAME = QtAV # for mac framework. also used in install_sdk.pro
 TARGET = QtAV
 QT += core gui
 #CONFIG *= ltcg
-greaterThan(QT_MAJOR_VERSION, 5): QT += opengl
+greaterThan(QT_MAJOR_VERSION, 5): QT += opengl openglwidgets
 greaterThan(QT_MAJOR_VERSION, 4) {
   contains(QT_CONFIG, opengl) {
       CONFIG *= config_opengl
diff --git a/src/opengl/gl_api.cpp b/src/opengl/gl_api.cpp
index 9caeba8b4..1ddd21f87 100644
--- a/src/opengl/gl_api.cpp
+++ b/src/opengl/gl_api.cpp
@@ -32,7 +32,8 @@ void* GetProcAddress_Qt(const char *name)
     void* p = (void*)QOpenGLContext::currentContext()->getProcAddress(QByteArray((const char*)name));
     if (!p) {
 #if defined(Q_OS_WIN) && defined(QT_OPENGL_DYNAMIC)
-        HMODULE handle = (HMODULE)QOpenGLContext::openGLModuleHandle();
+        using namespace QNativeInterface;
+        HMODULE handle = QWGLContext::openGLModuleHandle();
         if (handle)
             p = (void*)GetProcAddress(handle, name);
 #endif
diff --git a/src/output/OutputSet.h b/src/output/OutputSet.h
index b410d6161..0fc614d3d 100644
--- a/src/output/OutputSet.h
+++ b/src/output/OutputSet.h
@@ -22,6 +22,8 @@
 #ifndef QTAV_OUTPUTSET_H
 #define QTAV_OUTPUTSET_H
 
+#include <climits>
+
 #include <QtCore/QObject>
 #include <QtCore/QMutex>
 #include <QtCore/QWaitCondition>
diff --git a/src/output/audio/AudioOutputDSound.cpp b/src/output/audio/AudioOutputDSound.cpp
index 227fba991..1b7905699 100644
--- a/src/output/audio/AudioOutputDSound.cpp
+++ b/src/output/audio/AudioOutputDSound.cpp
@@ -193,6 +193,12 @@ bool AudioOutputDSound::close()
     available = false;
     destroy();
     CloseHandle(notify_event); // FIXME: is it ok if thread is still waiting?
+
+    // Wait for the PositionWatcher thread to stop.
+    while (watcher.isRunning()) {
+        watcher.wait(500);
+    }
+
     return true;
 }
 
diff --git a/src/output/video/QPainterRenderer.cpp b/src/output/video/QPainterRenderer.cpp
index 656a921a7..18f9d405b 100644
--- a/src/output/video/QPainterRenderer.cpp
+++ b/src/output/video/QPainterRenderer.cpp
@@ -85,8 +85,7 @@ void QPainterRenderer::drawBackground()
     d.painter->fillRect(QRect(QPoint(), rendererSize()), backgroundColor());
     d.painter->restore();
 #else
-    const QVector<QRect> bg(bgRegion.rects());
-    foreach (const QRect& r, bg) {
+    foreach (const QRect& r, bgRegion) {
         d.painter->fillRect(r, backgroundColor());
     }
 #endif
diff --git a/src/utils/BlockingQueue.h b/src/utils/BlockingQueue.h
index f729e8da3..ea906c9df 100644
--- a/src/utils/BlockingQueue.h
+++ b/src/utils/BlockingQueue.h
@@ -23,6 +23,8 @@
 #ifndef QTAV_BLOCKINGQUEUE_H
 #define QTAV_BLOCKINGQUEUE_H
 
+#include <climits>
+
 #include <QtCore/QReadWriteLock>
 #include <QtCore/QScopedPointer>
 #include <QtCore/QWaitCondition>
diff --git a/tools/templates/vo.h b/tools/templates/vo.h
index 85d687039..6378f20cd 100644
--- a/tools/templates/vo.h
+++ b/tools/templates/vo.h
@@ -13,7 +13,7 @@ class Q_AV_EXPORT %CLASS% : public QWidget, public VideoRenderer
     Q_OBJECT
     DPTR_DECLARE_PRIVATE(%CLASS%)
 public:
-    %CLASS%(QWidget* parent = 0, Qt::WindowFlags f = 0);
+    %CLASS%(QWidget* parent = 0, Qt::WindowFlags f = Qt::WindowFlags());
     virtual ~%CLASS%();
 
     /* WA_PaintOnScreen: To render outside of Qt's paint system, e.g. If you require
diff --git a/widgets/Direct2DRenderer.cpp b/widgets/Direct2DRenderer.cpp
index 9e63febb4..7841a97a2 100644
--- a/widgets/Direct2DRenderer.cpp
+++ b/widgets/Direct2DRenderer.cpp
@@ -55,7 +55,7 @@ class Direct2DRenderer : public QWidget, public VideoRenderer
     Q_OBJECT
     DPTR_DECLARE_PRIVATE(Direct2DRenderer)
 public:
-    Direct2DRenderer(QWidget* parent = 0, Qt::WindowFlags f = 0);
+    Direct2DRenderer(QWidget* parent = 0, Qt::WindowFlags f = Qt::WindowFlags());
     VideoRendererId id() const Q_DECL_OVERRIDE;
     bool isSupported(VideoFormat::PixelFormat pixfmt) const Q_DECL_OVERRIDE;
 
diff --git a/widgets/GDIRenderer.cpp b/widgets/GDIRenderer.cpp
index af20c869f..c3f9db32e 100644
--- a/widgets/GDIRenderer.cpp
+++ b/widgets/GDIRenderer.cpp
@@ -41,7 +41,7 @@ class GDIRenderer : public QWidget, public VideoRenderer
     Q_OBJECT
     DPTR_DECLARE_PRIVATE(GDIRenderer)
 public:
-    GDIRenderer(QWidget* parent = 0, Qt::WindowFlags f = 0); //offscreen?
+    GDIRenderer(QWidget* parent = 0, Qt::WindowFlags f = Qt::WindowFlags()); //offscreen?
     VideoRendererId id() const Q_DECL_OVERRIDE;
     bool isSupported(VideoFormat::PixelFormat pixfmt) const Q_DECL_OVERRIDE;
     /* WA_PaintOnScreen: To render outside of Qt's paint system, e.g. If you require
@@ -238,8 +238,7 @@ void GDIRenderer::drawBackground()
     //HDC hdc = d.device_context;
     Graphics g(d.device_context);
     SolidBrush brush(Color(bc.alpha(), bc.red(), bc.green(), bc.blue())); //argb
-    const QVector<QRect> bg(bgRegion.rects());
-    foreach (const QRect& r, bg) {
+    foreach (const QRect& r, bgRegion) {
         g.FillRectangle(&brush, r.x(), r.y(), r.width(), r.height());
     }
 }
diff --git a/widgets/QtAVWidgets/GLWidgetRenderer.h b/widgets/QtAVWidgets/GLWidgetRenderer.h
index 20dcd55a0..a1d11e468 100644
--- a/widgets/QtAVWidgets/GLWidgetRenderer.h
+++ b/widgets/QtAVWidgets/GLWidgetRenderer.h
@@ -41,7 +41,7 @@ class Q_AVWIDGETS_EXPORT GLWidgetRenderer : public QGLWidget, public VideoRender
     Q_OBJECT
     DPTR_DECLARE_PRIVATE(GLWidgetRenderer)
 public:
-    GLWidgetRenderer(QWidget* parent = 0, const QGLWidget* shareWidget = 0, Qt::WindowFlags f = 0);
+    GLWidgetRenderer(QWidget* parent = 0, const QGLWidget* shareWidget = 0, Qt::WindowFlags f = Qt::WindowFlags());
     virtual VideoRendererId id() const;
     virtual bool isSupported(VideoFormat::PixelFormat pixfmt) const;
     virtual QWidget* widget() { return this; }
diff --git a/widgets/QtAVWidgets/GLWidgetRenderer2.h b/widgets/QtAVWidgets/GLWidgetRenderer2.h
index 037a7cc53..ccda2637f 100644
--- a/widgets/QtAVWidgets/GLWidgetRenderer2.h
+++ b/widgets/QtAVWidgets/GLWidgetRenderer2.h
@@ -56,7 +56,7 @@ class Q_AVWIDGETS_EXPORT GLWidgetRenderer2 : public QGLWidget, public OpenGLRend
     Q_PROPERTY(QSize videoFrameSize READ videoFrameSize NOTIFY videoFrameSizeChanged)
     Q_ENUMS(Quality)
 public:
-    GLWidgetRenderer2(QWidget* parent = 0, const QGLWidget* shareWidget = 0, Qt::WindowFlags f = 0);
+    GLWidgetRenderer2(QWidget* parent = 0, const QGLWidget* shareWidget = 0, Qt::WindowFlags f = Qt::WindowFlags());
     virtual VideoRendererId id() const Q_DECL_OVERRIDE;
     virtual QWidget* widget() Q_DECL_OVERRIDE { return this; }
 Q_SIGNALS:
diff --git a/widgets/QtAVWidgets/OpenGLWidgetRenderer.h b/widgets/QtAVWidgets/OpenGLWidgetRenderer.h
index dffc65548..6620762d2 100644
--- a/widgets/QtAVWidgets/OpenGLWidgetRenderer.h
+++ b/widgets/QtAVWidgets/OpenGLWidgetRenderer.h
@@ -24,7 +24,7 @@
 
 #include <QtAVWidgets/global.h>
 #if QT_VERSION >= QT_VERSION_CHECK(5, 4, 0)
-#include <QOpenGLWidget>
+#include <QtOpenGLWidgets/QOpenGLWidget>
 #else
 #include <QtAVWidgets/QOpenGLWidget.h>
 #endif //QT_VERSION >= QT_VERSION_CHECK(5, 4, 0)
diff --git a/widgets/QtAVWidgets/QOpenGLWidget.h b/widgets/QtAVWidgets/QOpenGLWidget.h
index e6364120b..ab16e3c79 100644
--- a/widgets/QtAVWidgets/QOpenGLWidget.h
+++ b/widgets/QtAVWidgets/QOpenGLWidget.h
@@ -42,7 +42,7 @@ class Q_AVWIDGETS_EXPORT QOpenGLWidget : public QWidget
     Q_OBJECT
     Q_DISABLE_COPY(QOpenGLWidget)
 public:
-    explicit QOpenGLWidget(QWidget* parent = 0, Qt::WindowFlags f = 0);
+    explicit QOpenGLWidget(QWidget* parent = 0, Qt::WindowFlags f = Qt::WindowFlags());
     virtual ~QOpenGLWidget();
     void setFormat(const QSurfaceFormat &format);
     QSurfaceFormat format() const;
diff --git a/widgets/X11Renderer.cpp b/widgets/X11Renderer.cpp
index 91c952fb9..6b914fa4b 100644
--- a/widgets/X11Renderer.cpp
+++ b/widgets/X11Renderer.cpp
@@ -47,7 +47,7 @@ class X11Renderer: public QWidget, public VideoRenderer
     Q_OBJECT
     DPTR_DECLARE_PRIVATE(X11Renderer)
 public:
-    X11Renderer(QWidget* parent = 0, Qt::WindowFlags f = 0);
+    X11Renderer(QWidget* parent = 0, Qt::WindowFlags f = Qt::WindowFlags());
     VideoRendererId id() const Q_DECL_OVERRIDE;
     bool isSupported(VideoFormat::PixelFormat pixfmt) const Q_DECL_OVERRIDE;
 
@@ -441,8 +441,7 @@ void X11Renderer::drawBackground()
     // TODO: fill once each resize? mpv
     // TODO: set color
     //XSetBackground(d.display, d.gc, BlackPixel(d.display, DefaultScreen(d.display)));
-    const QVector<QRect> bg(bgRegion.rects());
-    foreach (const QRect& r, bg) {
+    foreach (const QRect& r, bgRegion) {
         XFillRectangle(d.display, winId(), d.gc, r.x(), r.y(), r.width(), r.height());
     }
     XFlush(d.display); // apply the color
diff --git a/widgets/XVRenderer.cpp b/widgets/XVRenderer.cpp
index 9ae64eb4e..ef414049a 100644
--- a/widgets/XVRenderer.cpp
+++ b/widgets/XVRenderer.cpp
@@ -50,7 +50,7 @@ class XVRenderer: public QWidget, public VideoRenderer
     Q_OBJECT
     DPTR_DECLARE_PRIVATE(XVRenderer)
 public:
-    XVRenderer(QWidget* parent = 0, Qt::WindowFlags f = 0);
+    XVRenderer(QWidget* parent = 0, Qt::WindowFlags f = Qt::WindowFlags());
     virtual VideoRendererId id() const Q_DECL_OVERRIDE;
     virtual bool isSupported(VideoFormat::PixelFormat pixfmt) const Q_DECL_OVERRIDE;
 
@@ -492,8 +492,7 @@ void XVRenderer::drawBackground()
         return;
     DPTR_D(XVRenderer);
     // TODO: set color
-    const QVector<QRect> bg(bgRegion.rects());
-    foreach (const QRect& r, bg) {
+    foreach (const QRect& r, bgRegion) {
         XFillRectangle(d.display, winId(), d.gc, r.x(), r.y(), r.width(), r.height());
     }
     XFlush(d.display);