demobook

Simulate realistic physics with Runway Gen 4.5

Demo summary

The demo shows Runway Gen 4.5 rendering realistic fluid and gravity physics through a prompt of a falling volcanic rock and lava.

Step-by-step

  1. Enter a prompt describing a specific physical event, such as a falling volcanic rock during an eruption
  2. Click the Generate button
  3. Review the rendered video for realistic motion and momentum

Highlights

the lava motion is rendered very realistically with Gen 4.5

All demos from “Runway Gen 4.5 - Tutorial & How to Use in 5 MINUTES! [ 2026 ]

  1. 0:281:14Generate video from text with Runway Gen 4.5The user demonstrates how to select the Gen 4.5 model in the Runway dashboard, paste a detailed prompt, and generate a 10-second video.RunwayText to Video
  2. 3:250:14Simulate realistic physics with Runway Gen 4.5CurrentThe demo shows Runway Gen 4.5 rendering realistic fluid and gravity physics through a prompt of a falling volcanic rock and lava.RunwayText to Video
  3. 4:100:11Upscale video to 4K in RunwayThe user demonstrates how to use the 4K button in the bottom right corner of the Runway interface to upscale a generated video.RunwayAI Video Upscaler
  4. Watch “Runway Gen 4.5 - Tutorial & How to Use in 5 MINUTES! [ 2026 ]” →

Text to Video

  1. 1:471:43Create fire visual effects with Runway and DaVinci ResolveThe creator demonstrates how to use Runway's Gen-3/4 model to generate a fire effect on a hand via text prompt and then composite it using DaVinci Resolve.Content Creators
  2. 0:281:14Generate video from text with Runway Gen 4.5The user demonstrates how to select the Gen 4.5 model in the Runway dashboard, paste a detailed prompt, and generate a 10-second video.Skills Factory
  3. 3:250:14Simulate realistic physics with Runway Gen 4.5CurrentThe demo shows Runway Gen 4.5 rendering realistic fluid and gravity physics through a prompt of a falling volcanic rock and lava.Skills Factory
  4. 2:350:14Create cinematic AI video with Runway Gen-2The user demonstrates entering a detailed text prompt into Runway Gen-2 to generate high-fidelity, realistic video clips.RecCloud
  5. 1:040:39Text-to-video generation in Runway Gen-3 AlphaThe user demonstrates the Runway interface, selecting the Gen-3 Alpha model and entering a prompt for an FPV jungle waterfall shot.Futurepedia
  6. 0:250:37Generate video from text with Runway Gen-3 AlphaThe video demonstrates selecting the Gen-3 Alpha model in the Runway interface, entering a descriptive prompt of a woman on a beach, and choosing between 5 and 10-second generation lengths.Runway
  7. 5:091:33Text-to-video generation with Runway Gen-2A walkthrough of using the Gen-2 model to generate 4-second videos from text prompts, including the use of free previews and style presets.Skills Factory
  8. 2:110:45Generate AI video with simple and detailed prompts in RunwayThe user demonstrates entering a simple prompt ('Fruit sitting on a table in the jungle') versus a highly detailed descriptive prompt into Runway Gen-3 Alpha to generate 5-second video clips.TheAIGRID
  9. 0:150:44Generate video from text with Runway Gen-3 AlphaThe user demonstrates how to enter a text prompt, adjust camera settings and aspect ratios, and generate a 4-second video using Runway Gen-3 Alpha.AI Tech Pro