Runway Video Generation Failed — Causes and Fixes
Runway Gen-2 and Gen-3 users sometimes encounter failed video generations or a progress bar that freezes and never completes. This typically happens when the prompt is too complex, the requested duration exceeds available compute, or Runway's servers are under heavy load. Both free and paid users can experience this error, though it is more common during peak usage hours.
Why does this error happen?
How to fix it
Shorten the Generation Duration to 4 Seconds First
Open your generation settings and set the video duration to the minimum available option, typically 4 seconds. A shorter clip is far less likely to time out or fail. Once you confirm the 4-second clip generates successfully, you can then extend the clip using Runway's Extend feature rather than regenerating from scratch.
Simplify Your Prompt to One Core Subject and Action
Rewrite your prompt to focus on a single subject performing one clear action in a simple environment. Remove layered descriptions, multiple characters, simultaneous camera movements, and highly specific stylistic modifiers that conflict with each other. A clean prompt like 'a woman walking through a sunlit forest' will outperform a dense, multi-element prompt nearly every time.
Check Runway's Server Status Before Retrying
Visit Runway's official status page at status.runwayml.com to check for any active incidents, degraded performance, or scheduled maintenance. If an incident is reported, wait until it is resolved before submitting new generation jobs. Retrying during an active outage wastes credits and will almost certainly fail again.
Switch to Image-to-Video Instead of Text-to-Video
If text-to-video continues to fail, upload a reference image and use Runway's image-to-video mode instead. Providing a concrete visual anchor significantly reduces the model's interpretive workload, which lowers the chance of a failed or inconsistent generation. You can generate a suitable starting image using Midjourney, DALL-E, or even Runway's own image generation tools.
Pro tip
Always start every new project with a 4-second test generation using a simplified prompt before committing to longer durations or complex scenes. This lets you validate your concept quickly without burning credits on a failed full-length generation.