... in other design, such as web pages, there may be "transparent spacers" but there is still a background page colour/texture underneath.
In video, the default black "screen" is just like that.
I don't believe it's even possible to create the appearance of "nothing", apart from that.
It is possible, with PD, to insert a colour board (any colour) as a spacer then apply 100% transparency to it. The result is a black screen!
Cheers - Tony
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