I'd like to know this as well, particularly your second question. Were you able to figure anything out? I'm trying to create my own kind of video transition.
I did not figure out how to transition automatically to next slide after video completes. I had to do it manually. I think I figured out how to fade out, but I’ll have to look at that and get back to you.
Perhaps you should post this as a new question since I didn’t get any answers. I’d really like a good tutorial on this because, if there is no way to do some of these things, then PowerPoint suddenly becomes more attractive, which would be a shame.
Oh, I see.
There seems to be a lot you can do with other programs to InDesign.. Maybe we can make transitions with Edge Animate? I'll have to create a post for that.