Greetings! My goal is to create an AI video that is constantly moving at specific angles for 3-4 minutes. I initially created the visual in my mind using Bing. Following various research, I used the Runway program to animate the video as I desired by writing a prompt for this image. However, in the free version, Runway can only provide a total of 4 seconds. Can I create a video for the desired duration in the Unlimited version? Or is there another method to achieve the desired length and movement for this video?