Creating with Gen-4.5: Guide to Video Generation in Runway

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Master Cinematic Creation with Runway Gen-4.5

If you are looking to bring your most imaginative visual ideas to life, Runway’s Gen-4.5 sets a breathtaking standard for AI video generation. Known for its exceptional motion quality, physical accuracy, and stellar prompt adherence, Gen-4.5 lets you control everything from intricate camera choreography to subtle environmental shifts.

Whether you are building a cinematic scene, a social media clip, or a product concept, here is how you can step-by-step master the art of creating with Gen-4.5 based on the official Runway workflow.


Step 1: Accessing Gen-4.5

Getting started on the Runway platform is straightforward:

  • Via Apps View: Navigate to the Apps View, then type Gen-4.5 into the search menu at the top of your screen.
  • Via Tool Mode: Alternatively, you can head directly into Tool Mode, select Video, and choose Gen-4.5 from the model selector dropdown.

Step 2: Crafting Your Prompt & Configuring Settings

Gen-4.5 supports two primary modes: Text-to-Video and Image-to-Video.

  • Text-to-Video: Enter a clean, direct description detailing both the visual elements and the motion within the scene. Avoid vague phrasing and focus on concrete camera movements and action sequences.
  • Image-to-Video: Drag and drop an initial image into the prompt window to serve as your starting frame, then describe how the elements within that image should move.

Before hitting generate, review your configuration settings to match your creative vision:

| Setting Parameter | Available Options & Details |
| :— | :— |
| Durations | 2 to 10 seconds (choose longer durations for multi-step action sequences) |
| Aspect Ratios | 16:9 (1280×720), 9:16 (720×1280), 1:1 (960×960), 4:3 (1104×832), 3:4 (832×1104), 21:9 (1584×672) |
| Frame Rate (FPS) | Choose between 24fps or 25fps under Advanced settings |
| Export Formats | Standard outputs or high-end options like ProRes / PNG sequence (available on select plans) |


Step 3: Generating, Iterating, and Refining

Once your prompt and parameters are locked in, click Generate to process your video. When the generation is complete, use the sidebar controls to favorite, upscale, or download your clip.

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