I'm curious, do you capture your own video's for use in ur Dreams?
I use multiple sources. For video, I capture some via a HD TV card, others my HD video camera, and I've also created some from blue ray. When I use video other than my own, I follow the fair use rule.
It's funny, I catch myself all the time looking at a program and saying "that would make a great dream" and "I can loop that". The next thing you know I've got it captured and open in After Effects.
I also create dreams from renders I've created with 3dsmax, Vue, and particleIllusion.