<div>I found this thread in a Google search. I know it’s old but I’m having a similar problem.
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My Vegas Pro preview (and the timeline) show a white video background as grey.
I saw that Aaron Star said to switch from 32-bit to 8-bit, but mine was already set to that.
Instead, I switched from 8 bit to 32-bit full, with “view transform” set to Off, and that fixed it for me.
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