How do you make a crossover video? More importantly, how to take the clips fromt the movie?

Alrighty this will take a lot of explaining. This is just how I do it, others may do it differently. Basically what I have is Youtube Downloader. Download that, and from there you go onto Youtube, and download clips from whatever movie you want them from. Example: I'm making a Ariel and Jim video, I download youtube videos of the TLM video and Treasure Planet. Then depended what computer you have you go on I think it's Movie Maker or something on a Mac and with Windows I use Windows Movie Maker. In order to paste the videos into Windows Movie Maker you have to go back to your Youtube Downloader, click on the tab that says Convert and convert it to a Windows (or Mac I guess) Media Video a WMV file. Then you can copy the videos into Windows Movie Maker and there should be a button that says Split meaning you split the video at the clip you want and split it once more where you want the clip to end. From there you can put the clips into a timeline and create a crossover video. Sorry if this was long and confusing, any question just ask :)

how do you do this

You add a clip from a movie, TV show or commercial and you put it all together.