Hi
Not sure about version 2.22 but I would download a later version such as 2.41 or 3.12
2.41 from here http://download.chip...or_5697484.html
There are more features in the 3.xx versions but still some bugs. The 3.xx versions however support (I think) the alpha channel (opacity) in the videos and images used.
PNG image files should load OK but the transparent area will appear as white.
Just load the image to the overlay track (in version 3.xx this can be any of the upper video tracks) In 2.41 it is below the main video track.
aNow left click it. It will preview in the left hand clip preview pane. Any image on the overlay track will take precedence over any image/video on the main sequence track.I assume you want the white area to remain transparent. I haven't tried it but this might happen automatically in the 3.xx versions.
In v2.41, under the preview image will be an area with some control settings. You can set the image to be central with the arrow matrix and adjust it to full size and 0% opacity with the sliders. It should now cover up any image or video on the main sequence line.
To the right of the arrow matrix is a further box one of which is the green square with the little man that you mention.
This button controls the chroma key colour.
Click this and it will open a larger "Chroma Key Select" screen . Assuming you want your white areas to become transparent so as to reveal those areas in the video/image on the main sequence line you must set the chroma colour to white.So click the colour box and select white from the selection shown and click OK.
Slide both sliders to the left and all the image will show. Now move the lower (foreground) slider towards the right. Any part of the image that it white will become chequered showing it has become transparent.
The main track video will now show through in these areas.
Unfortunately the effect works on all white pixels (or pixels of the selected colour) so white areas in the overlay image itself will also be incorporated into the transparent channel. That's why chroma screens tend to be green or blue. But it's worth trying.
If you want some form of text watermark then just add your text as an overlay and then set the border of the text to white and the body the the text to black. Then adjust the opacity to a suitable low level and finally set the text position.
Nat
