Fix documentation of qmlvideofx example

Make the documentation fit to the current state of the example.

Task-number: QTBUG-38121
Change-Id: I3379e3328d07ef8bcdb35a5e3821ab194c3443c4
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Sami Makkonen <sami.makkonen@digia.com>
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>

examples/multimedia/video/doc/src/qmlvideofx.qdoc

@@ -46,31 +46,25 @@ advanced functionality - in this case, C++ code is used to calculate the QML
 frame rate.  This value is rendered in QML in a semi-transparent item
 overlaid on the video content.
 
-Finally, this application demonstrates the use of different top-level QML
-files to handle different physical screen sizes.  On small-screen devices,
-menus are by default hidden, and only appear when summoned by a gesture.
-Large-screen devices show a more traditional layout in which menus are
-displayed around the video content pane.
-
 The following screenshots show shader effects being applied.  In each case,
 the effect is implemented using a fragment shader.
 
 Here we see an edge detection algorithm being applied to a video clip
-(\l{http://orange.blender.org/}{Elephant's Dream from blender.org}).
-\image qmlvideofx-video-edgedetection.png
+(\l{http://durian.blender.org/}{Sintel from blender.org}).
+\image qmlvideofx-video-edgedetection.jpg
 
 This image shows a page curl effect, applied to the same video clip.
-\image qmlvideofx-video-pagecurl.png
+\image qmlvideofx-video-pagecurl.jpg
 
 Here we see a 'glow' effect (edge detection plus colour quantization) being
 applied to the camera viewfinder.
-\image qmlvideofx-camera-glow.png
+\image qmlvideofx-camera-glow.jpg
 
-This image shows a 'lens magnification' effect applied to the viewfinder.
-\image qmlvideofx-camera-magnify.png
+This image shows a 'wobble' effect applied to the viewfinder.
+\image qmlvideofx-camera-wobble.jpg
 
 The application includes many more effects than the ones shown here - look
-for Effect*.qml files in the list above to see the full range.
+for Effect*.qml files in the list of files below to see the full range.
 
 \section1 Application structure
 
@@ -197,11 +191,8 @@ vertical dividing line, which can be dragged left / right by the user.  Finally,
 a \l{video/qmlvideofx/qml/qmlvideofx/ParameterPanel.qml}{ParameterPanel} item
 renders the sliders corresponding to each effect parameter.
 
-Here is the source selection menu:
-\image qmlvideofx-source-menu.png
-
-And here is the effect selection menu:
-\image qmlvideofx-effects-menu.png
+Here is the effect selection menu:
+\image qmlvideofx-effects-menu.jpg
 
 \section1 Calculating and displaying QML painting rate