Yes as you can see in rgb_levels it has additional dll exports: VirtualdubFilterModuleInit2, FilterModModuleInit
Details of activation are hidden by c++ wrapper (VDXFrame), with plain C interface it is a bit complex. In no case it has any risk in it.
But this interface was designed with side-by-side development of official VD in mind, now as official VD RIP I think I can drop unnecessary complexity.
Even format id for kPixFormat_XRGB64 was exposed with a function (not constant), now I dropped that idea (too much trouble for nothing).
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