diff --git a/src/QtAV/VideoFrame.h b/src/QtAV/VideoFrame.h
index 6f29271a..c97bd1bf 100644
--- a/src/QtAV/VideoFrame.h
+++ b/src/QtAV/VideoFrame.h
@@ -1,6 +1,6 @@
 /******************************************************************************
     QtAV:  Media play library based on Qt and FFmpeg
-    Copyright (C) 2012-2015 Wang Bin <wbsecg1@gmail.com>
+    Copyright (C) 2012-2016 Wang Bin <wbsecg1@gmail.com>
 
 *   This file is part of QtAV
 
@@ -56,13 +56,13 @@ public:
     //set planes and linesize manually or call init
     QTAV_DEPRECATED VideoFrame(const QByteArray& data, int width, int height, const VideoFormat& format);
     VideoFrame(const QVector<int>& textures, int width, int height, const VideoFormat& format);
-    VideoFrame(const QImage& image); // does not copy the image data
+    VideoFrame(const QImage& image);
     VideoFrame(const VideoFrame &other);
-    virtual ~VideoFrame();
+    ~VideoFrame();
 
     VideoFrame &operator =(const VideoFrame &other);
 
-    virtual int channelCount() const;
+    int channelCount() const Q_DECL_OVERRIDE;
     /*!
      * Deep copy. Given the format, width and height, plane addresses and line sizes.
      */
@@ -96,13 +96,14 @@ public:
     /*!
      * \brief toImage
      * Return a QImage of current video frame, with given format, image size and region of interest.
+     * If VideoFrame is constructed from an QImage, the target format, size and roi are the same, then no data copy.
      * \param dstSize result image size
      * \param roi NOT implemented!
      */
     QImage toImage(QImage::Format fmt = QImage::Format_ARGB32, const QSize& dstSize = QSize(), const QRectF& roi = QRect()) const;
     /*!
      * \brief to
-     * The result frame data is always on host memory.
+     * The result frame data is always on host memory. If video frame data is already in host memory, and the target parameters are the same, then return the current frame.
      * \param pixfmt target pixel format
      * \param dstSize target frame size
      * \param roi interested region of source frame
diff --git a/src/VideoFrame.cpp b/src/VideoFrame.cpp
index 0d2c2daf..d19a57e6 100644
--- a/src/VideoFrame.cpp
+++ b/src/VideoFrame.cpp
@@ -1,6 +1,6 @@
 /******************************************************************************
     QtAV:  Media play library based on Qt and FFmpeg
-    Copyright (C) 2012-2015 Wang Bin <wbsecg1@gmail.com>
+    Copyright (C) 2012-2016 Wang Bin <wbsecg1@gmail.com>
 
 *   This file is part of QtAV
 
@@ -146,6 +146,7 @@ public:
     float displayAspectRatio;
     VideoFormat format;
     QVector<int> textures;
+    QScopedPointer<QImage> qt_image;
 
     VideoSurfaceInteropPtr surface_interop;
 };
@@ -181,6 +182,7 @@ VideoFrame::VideoFrame(const QImage& image)
 {
     setBits((uchar*)image.constBits(), 0);
     setBytesPerLine(image.bytesPerLine(), 0);
+    d_func()->qt_image.reset(new QImage(image));
 }
 
 /*!
@@ -352,6 +354,13 @@ int VideoFrame::effectiveBytesPerLine(int plane) const
 
 QImage VideoFrame::toImage(QImage::Format fmt, const QSize& dstSize, const QRectF &roi) const
 {
+    Q_D(const VideoFrame);
+    if (!d->qt_image.isNull()
+            && fmt == d->qt_image->format()
+            && dstSize == d->qt_image->size()
+            && (!roi.isValid() || roi == d->qt_image->rect())) {
+        return *d->qt_image.data();
+    }
     VideoFrame f(to(VideoFormat(VideoFormat::pixelFormatFromImageFormat(fmt)), dstSize, roi));
     if (!f)
         return QImage();