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Runway Gen 4.5 is an advanced video model that generates cinematic, high‑fidelity video from natural language and images. It offers fine‑grained control over motion, camera behavior, composition, and style, producing physically realistic and temporally consistent scenes. Optional parameters: Set aspect ratio. Select from (21:9, 16:9, 4:3, 1:1, 3:4, 9:16). It is set to 16:9 aspect ratio as default. Set Duration. Select from (5 seconds, 8 seconds, 10 seconds) to specify video length in seconds. Set to 5 seconds as default.

Runway's Gen-4 Turbo model creates best-in-class, controllable, and high-fidelity video generations based on your prompts. Both text inputs (max 1000 characters) and image inputs are supported, but we recommend using image inputs for best results. Optional parameters: Aspect ratio (16:9, 1:1, 9:16) for landscape/portrait videos. Duration (5, 10) to specify video length in seconds. Full prompting guide here: https://help.runwayml.com/hc/en-us/articles/39789879462419-Gen-4-Video-Prompting-Guide

Runway's Gen-3 Alpha Turbo model creates best-in-class, controllable, and high-fidelity video generations based on your prompts. Both text inputs (max 1000 characters) and image inputs are supported, but we recommend using image inputs for best results. Parameter controls: Aspect_ratio (16:9, 9:16) for landscape/portrait videos. Duration (5, 10) to specify video length in seconds.