A Poetic Film Fest Trailer with After Effects and Particular
Pierre Michel on Creating an Eye-Popping Open in Three Weeks
“Even though I’ve been using this software for five years I thought it would be very hard to do all of this in After Effects because I had only 3 weeks of compositing to do it all," says Michel. "Many people consider After Effects to be not very powerful but what you can do is practically unlimited (except for 3D). You just have to know precisely what you want and imagine the compositing process before working.”
But still time was an issue, especially when it came to producing 2K images. “Because I work as a digital artist on films everyday I knew it would be very difficult to deliver the film on time if I worked at 1920×1080 because every second of the film was going to be VFX images,” Michel explains. “So I decided, after making some tests, to work in 1280×720 pixels and then resize all the film at the good resolution (with some sharping and graining process) and it worked pretty well. At the end nobody can tell if it is truly 1080p images or 720p streched…It just works. You can see the result on those 2k images. The second reason why I choose this format was to be able to see all the images in my 4/3 computer screen without zooming/dezooming! Everything is good to save time.”
“The process for the rain drops was not so difficult. I knew that I needed a kind of real look for the rain in the film but also it had to be more than realistic (a little bit designed to fit the spirit of this trailer). I tried many ways to do it and in the end I used two different approaches. The first way (that is used for all the shots except the last one (with the fire) was to take a real drop filmed in slow motion. I stabilized and rotoscoped it and then used it as a luminance map for the caustic plugin in After Effects (which creates a water look of a picture based on a luminance of an other image-in this case the real drop).
"What you get is a very good baseshape because it comes from a real drop movement and what is inside is made by the distortion added via the caustic plugin."
You have to mix real shots of water mix with fractal noises so that you can choose the velocity and the way it moves…
But the result was not good enough. To make the sensation that you are looking through the water you need to use compound blur (part of the images are blurred and others not), lens distortion, little shake cam, vignettage… many little things that will make it a little bit real."