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diff --git a/demos/video/qmlvideofx/shaders/sobeledgedetection1.fsh b/demos/video/qmlvideofx/shaders/sobeledgedetection1.fsh
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+// Based on "Graphics Shaders: Theory and Practice" (http://cgeducation.org/ShadersBook/)
+
+uniform float dividerValue;
+uniform float mixLevel;
+uniform float resS;
+uniform float resT;
+
+uniform sampler2D source;
+uniform lowp float qt_Opacity;
+varying vec2 qt_TexCoord0;
+
+void main()
+{
+    vec2 uv = qt_TexCoord0.xy;
+    vec4 c = vec4(0.0);
+    if (uv.x < dividerValue) {
+        vec2 st = qt_TexCoord0.st;
+        vec3 irgb = texture2D(source, st).rgb;
+        vec2 stp0 = vec2(1.0 / resS, 0.0);
+        vec2 st0p = vec2(0.0       , 1.0 / resT);
+        vec2 stpp = vec2(1.0 / resS, 1.0 / resT);
+        vec2 stpm = vec2(1.0 / resS, -1.0 / resT);
+        const vec3 W = vec3(0.2125, 0.7154, 0.0721);
+        float i00   = dot(texture2D(source, st).rgb, W);
+        float im1m1 = dot(texture2D(source, st-stpp).rgb, W);
+        float ip1p1 = dot(texture2D(source, st+stpp).rgb, W);
+        float im1p1 = dot(texture2D(source, st-stpm).rgb, W);
+        float ip1m1 = dot(texture2D(source, st+stpm).rgb, W);
+        float im10  = dot(texture2D(source, st-stp0).rgb, W);
+        float ip10  = dot(texture2D(source, st+stp0).rgb, W);
+        float i0m1  = dot(texture2D(source, st-st0p).rgb, W);
+        float i0p1  = dot(texture2D(source, st+st0p).rgb, W);
+        float h = -1.0*im1p1 - 2.0*i0p1 - 1.0*ip1p1 + 1.0*im1m1 + 2.0*i0m1 + 1.0*ip1m1;
+        float v = -1.0*im1m1 - 2.0*im10 - 1.0*im1p1 + 1.0*ip1m1 + 2.0*ip10 + 1.0*ip1p1;
+        float mag = 1.0 - length(vec2(h, v));
+        vec3 target = vec3(mag, mag, mag);
+        c = vec4(target, 1.0);
+    } else {
+        c = texture2D(source, qt_TexCoord0);
+    }
+    gl_FragColor = qt_Opacity * c;
+}