Although many people prefer to work with image sequences in After Effects because of the fact that if you render a movie and your computer crashes you have to render the whole scene again, you can still bring in a movies in a wide variety of formats. So I'm going to show you some of the formats I have on my Desktop, I'll go to File, Import, File and as you see here I have a trailer in a .avi file format, which is the default movie format for Windows Platforms. I have the mov which is the QuickTime format and I also have a SWF file which is the Flash format. So I'll go ahead and bring in each one of them one at a time. We'll start off with the AVI and I'll bring it in as footage and you see here it's QuickTime movie, Open, and here is the AVI file, I'll go ahead and just drag this right here and I'll press the 0 on my numeric keypad and it's in quarter mode here as far as preview, so that's why it's a little grainy. OK great that looks fine, what I'll do now is I will bring in another format, so I'll go to file and once again I'll choose import and I will bring in the same one as a movie format which is once again QuickTime. Now here is the movie version and once again I will a RAM preview, I'll put it back on full. So as you can see here we are able to bring in multiple formats and I'll go to file import yet again and this time I will bring in, I keep missing that by the way, sorry, I just bought a new Wacom tablet and this one is a little bit bigger then the old one I had so my hand used to being in a certain quadrant of the tablet and this thing is taking me a lot longer to move around because it's a pretty ginormous Wacom tablet. So here's the other movie this is a SWF file which is Flash and I will once again drag that here and press the numeric keypad 0 to do a RAM preview and as you can see this is a Flash exported file. How cool is that? So you can bring in QuickTime movies, you can bring in AVI files you can bring in image sequences, you bring in SWF files. It's really, really convenient to be able to work with so many different file formats when your working in After Effects and all you really have to do at this point is apply all your affects and everything else in this application and then when you're ready send it over to your editing application such as Final Cut Pro or Premier Pro and then you make a finished movie.