Here's the promised tutorial. It presumes that you don't have access to or knowledge of Photoshop. It also presumes that you'd like to have control of the shadow size/position/color in vMix.
- In Powerpoint, Keynote or similar.
- Create a blank slide
- Right-click over the slide and select Format Background
- Set it Solid Fill
- Select black as the color
- Add a rectangle object
- Right-click & select Format Shape
- Select white as the color
- On the second shape options menu select Soft Edges
- Set the size as desired
- Save the PPTX file
- Save-As selecting PNG as the file type
- When prompted select "Just this Slide"
- Add the resulting file to your vMix project
- In vMix add an Input selecting Color as the type.
- Select the desired color for your shadow
- Click on the cog for the color shot
- Select the Color key menu
- For Key/Fill select the shadow file from the drop down list
- You'll see your colored field masked by the image
- Close the shot
- Select the shot you want to use as the base for your multiview
- Set the color shot as layer #1
- Use the related Position menu to place it as desired
- Select your foreground image as layer #2
- Use the related Position menu to place it as desired
Here's what the resulting work looks like:
This would be a lot easier if vMix allowed the following:
- User control of mix insertion for multiview layers (see feature request made yesterday)
- A less complicated way to have color fill in a key shape, preferably in the multiview
- blur capability, including key blur