In the field of AI video generation, PIKA has released the lip synchronization feature Lip sync, while Alibaba has introduced the video generation framework EMO. EMO can generate speaking videos of any duration and adopts a unique technical approach. The technology of AI video generation tools continues to be optimized, with multiple technical routes being pursued simultaneously, and the optimal solution has not yet been found. The gap between large companies and startups is not significant. The video generation field has produced several breakout achievements, including the three major image-to-video tools. Videos have greater advantages in information expression and dynamism. AI video tools will lower the threshold for video creation in various niche industries and enhance creative output.