How We Made This Insane AI Trailer

Introduction

We teamed up with CapCut to create an insane retro sci-fi trailer utilizing AI for every shot. If you want to see the full trailer, click here and then come back to this article afterwards. We’re going to break down the process so you can do it too. Let's dive in!

Step 1: Crafting the Narration

The first step was to create a voiceover that encapsulated the world we envisioned for "Soul Killer." To achieve a retro sci-fi vibe, we crafted a script that highlighted the essence of our narrative. We then turned to 11 Labs and selected the Atom voice, which perfectly embodied that classic sci-fi style. For the opening line, it is said that long ago, the galaxy was once a peaceful and prosperous place, we added vocal effects to simulate an old, slightly distorted sound with echoes and reverb, enhancing delivery of our climactic line: "that man is Soul Killer."

Step 2: Creating the Music

Next on the agenda was composing the music. We often prioritize music before other elements, especially in trailers, as it serves as the backbone of the entire production. Our objective was to compose a piece reminiscent of Michael Giacchino's revamped Star Trek theme from the 2009 reboot and other retro 60s mid-century modern compositions, like the theme from "Lupin III." Once the Soul Killer theme was finalized, we integrated it into our timeline in CapCut, syncing it to start right after the narration.

Step 3: Previsualization and Placeholders

In this phase, we focused on previsualization. We edited the entire project before shooting or creating AI-generated shots, either using text placeholders or incorporating placeholder images. By employing film stills or generating images with MidJourney, we created a moving storyboard that helped ensure we only pursued necessary shots. This early conceptualization saved time and clarified our vision for the project.

Step 4: Generating AI Imagery

Creating the AI imagery was the most time-consuming aspect of the process as we aimed for perfection in every shot. We used MidJourney, experimenting with various prompts (examples can be found in the description). For refinement, we used Photoshop's generative fill feature to modify images, removing unnecessary elements or expanding backgrounds. After adding all images, we placed them into the timeline above their matching placeholders or prepared them for VFX.

Step 5: Adding Movement and Visual Effects

We didn’t want static images; thus, we added movement through simulated camera techniques, including keyframe adjustments on position and scale. Subtle camera movements enhanced engagement and believability in the shots. Furthermore, we included visual effects assets such as explosions and meteors to elevate the scenes.

Step 6: Sound Design

Sound design turned out to be one of the most underrated yet crucial steps. Great sound can enhance the piece significantly. Listening to the trailer with closed eyes can reveal its effectiveness. We added risers at intense moments to signal the climax and incorporated ambient elements like a nuke explosion and dinosaur roar at key intervals.

Step 7: Applying Effects and Color Grading

To solidify our retro sci-fi style, we utilized various built-in effects in CapCut. We employed film grain, color effects, and added a letterbox overlay. We animated the letterbox for a more dynamic feel by keyframing its size throughout the clips. Finally, we applied stylistic color grading and a vintage 8 mm film grain effect to enhance the entire project.

Step 8: Export and Finalization

After all was said and done, exporting the project was the final step. The narration concluded with the gripping line: "Ever since the fall, it has descended into chaos. Warlords, slavers, pirates— all manner of horrors now plague these lands. A select few were chosen by the old ones for one reason: to restore."

You can check out the full trailer created with CapCut and these tools. Even those without connections to major Hollywood studios can bring their ideas to life. If you're interested in trying out CapCut for yourself, click the link in the description. Thanks for joining us!

Keywords

• AI Trailer
• CapCut
• Narration
• Sound Design
• Music Composition
• Previsualization
• Visual Effects
• Color Grading

FAQ

1. What tools did you use to create the trailer?

   • We used CapCut, 11 Labs, MidJourney, and Photoshop among other tools.

2. How was the narration created?

   • The narration was crafted from a script and recorded using the Atom voice from 11 Labs, with added effects for a retro vibe.

3. What is the importance of previsualization?

   • Previsualization helps clarify the project’s vision and ensures only necessary shots are pursued, saving time in production.

4. How did you add movement to AI-generated shots?

   • We added simulated camera movements by adjusting the scale and position of image clips using keyframes in CapCut.

5. What role does sound design play in trailers?

   • Sound design enhances the viewer's emotional experience and can significantly sell a piece, making it feel more immersive and engaging.