Runway's AI video generation tool Gen-2 has received an epic update, enabling users to easily create 4K high-definition videos. The update employs a mixed training mode of text, images, and videos, improving video quality while reducing training costs. This innovation has shaken the film and creative industries, fundamentally changing the way creative software works. Gen-2 offers a convenient experience on mobile, catering to users' needs for creating high-quality video content. The update expands creative possibilities, addressing demands for fashion advertisements, music video shots, sci-fi films, and more.