Thanks Jim - works a treat. Didn’t think this one would be possible.
On 12 Sep 2020, 01:45 +0100, How to use LiveCode 
<use-livecode@lists.runrev.com>, wrote:
>
> go stack url "https://netrin.on-rev.com/misc/TransparentStack.livecode";

I can now use this technique to layer elements over things such as the browser 
widget, of player object when playing streaming video. It’s relatively fast so 
for instance typing text in the field and exporting a snapshot with each letter 
types works acceptably.

Graphic processing of live video layers
Out of interest why does live streaming video to a player object or other tools 
(camera control or browser widget) draw directly to the screen? I understand 
this will be faster, but with modern gpu’s other applications do amazing 
things. Does anyone know if this is a complex thing to do in terms of coding - 
or is it just a choice made by developers thinking that layering of things like 
video is not something many people want to do?

Livecode and GPU's
I’ve noticed in these tests that Livecode is not using any GPU’s for doing 
these complex graphic tasks. I have Activity Monitor open and a couple of CPU 
cores are being used but none of the GPU’s. I’m wondering if this is an issue 
for speed, and what is involved with taking advantage of the capabilities of 
GPU’s in the code we write?
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