实测字节Seedance 1.5 Pro，能直出方言的AI视频也来了。

Core Insights - The article discusses the launch of the Seedance 1.5 Pro model, highlighting its advanced capabilities in video and audio synchronization, particularly in Chinese and dialect outputs, and emotional expressiveness [3][12][36]. Group 1: Video and Audio Synchronization - Seedance 1.5 Pro achieves film-level audio-visual synchronization, allowing for accurate lip-syncing and multi-scene synchronization, significantly reducing production time [13][16][18]. - The model can generate up to 12 seconds of video, enabling the creation of short advertisements with precise dialogue and sound effects [18][19]. Group 2: Language and Dialect Capabilities - The model excels in multilingual outputs, including English, Japanese, Korean, and Spanish, but stands out for its proficiency in Chinese dialects, particularly Cantonese [21][23]. - Seedance 1.5 Pro can seamlessly switch between various Chinese dialects, allowing for realistic interactions between characters from different regions [25][26]. Group 3: Emotional Expressiveness - The model has significantly improved its emotional expressiveness, allowing for varied performances based on the same line of dialogue, enhancing the overall storytelling experience [27][30]. - It can integrate sound effects, music, and visual elements to create immersive video content, streamlining the production process [33][34]. Group 4: Future Developments - An anticipated feature is the draft sample capability, which allows users to preview lower-resolution drafts before finalizing high-resolution outputs, optimizing both time and cost [35]. - The advancements in Seedance 1.5 Pro represent a significant leap in AI video production, merging sound and visuals to create high-quality content suitable for professional use [37][38].