VividDream is an innovative technology capable of generating explorable 4D scenes with environmental dynamism from a single input image or text prompt. It first expands the input image into a static 3D point cloud and then utilizes a video diffusion model to generate an animation video collection. By optimizing the 4D scene representation, it achieves consistent motion and immersive scene exploration. This technology paves the way for creating captivating 4D experiences based on diverse real images and text prompts.