I got some title sequence videos created where my logo swooshes in over a black background. I'd like to figure out how to use that as a video transition - I can't figure it out from the vmxix video tutorial here though: .

I want the black background to be transparent, so that when I hit the stinger1 button, it will overlay the video with the logo swooshing in, and cut to the cued input at a suitable point.

I'm just not sure what settings I should use for the whole "premultiplied alpha" stuff. Are there tutorials that explain that stuff?

I'll second NHT for this.
One more thing though, if you have After Effects, you can easily create your sequence with alpha (transparent) background and export it as an image sequence for stinger use. It's even easier and better than using Luma.

Guillaume