Runway V3 Character Creation and Editing

Jun 17, 2025

Overview

The speaker explains their process for generating consistent characters in Runway V3 for a documentary, covering visual and voice consistency, and techniques for removing unwanted subtitles using AI tools.

Creating Consistent Visual Characters

  • Runway V3 currently lacks character reference support, so the process relies on detailed prompt engineering.
  • Used Google's Whisk tool to generate an image and a robust prompt from the AI's image analysis.
  • Transferred the image description and original prompt into Gemini, instructing it to focus on the character's facial features.
  • Requested a consistent character template, resulting in a core prompt for visual appearance and personality.
  • Maintained consistency by using the same detailed character description across all prompts.

Ensuring Consistent Character Voice

  • Asked Gemini to suggest a character name ("Aram") and detailed voice description for use in prompts.
  • Desired a consistent, slightly raspy and thoughtful voice for the character.
  • For audio, combined clips into a 10-second sample and used 11 Labs to clone the character’s voice, aiming to minimize unwanted accent variations.
  • Used text-to-speech in 11 Labs to fine-tune or replace inconsistent voice outputs for better uniformity.

Removing Captions/Subtitles from Videos

  • Noted inconsistent results with caption removal when generating videos using Gemini.
  • Used Runway’s inpainting tool to manually brush out captions, producing acceptable but sometimes noticeable edits.
  • Found Cap Cut’s AI removal tool more effective for erasing captions, especially in complex visual areas.

V3 Video Generation Tips

  • Compared V3 fast mode (20 credits) to quality mode (100 credits), noting that fast mode sometimes yields unique and even preferable results.
  • Explained how to switch between fast and quality modes in Runway V3 settings.

Final Advice and Resources

  • Emphasized the importance of using detailed, consistent prompts for both character visuals and voices.
  • Suggested subscribing for more tutorials and provided links to all mentioned tools in the video description.