Transforming a short .mp4 file into a long-form feature can be achieved by using AI tools like Wondershare Filmora 15 and Imagine.Art to extend footage, or by utilizing platforms such as CapCut, Flixier, and Invideo for compilation and narrative building. Key techniques include using AI to generate new frames and employing online editors to add, edit, and export video content. For an all-in-one solution, you can create and edit videos on CapCut's website .