BytePlus, a subsidiary of ByteDance, has released a new Seedance 1.5 Pro video generation AI model that can integrate realistic visuals and industry-leading audiovisual synchronization. At the same time, it also enhances multi-speaker, multilingual dialogue, cinematic consistency, and shot-level control. In practice, this means that the AI-generated scenes will look and sound like the same thing, rather than feeling like they were stitched together after the fact.
The model is said to significantly reduce post-editing work, especially for highly interactive content, while making AI video output performance-ready right out of the model by adjusting the timing of dialogue, ambient audio, music, vocals, and expressiveness to the millisecond.
It also works as a language master as it supports English, Japanese, Korean, Spanish, Indonesian, Portuguese, Mandarin, and even regional dialects in single-speaking and multi-speaking modes. Visually, it's cleaner with fewer artifacts, more stable lighting, consistent composition, and better color handling across different styles and scenes. Meanwhile, Director Control now understands complex prompts more reliably, providing creators with predictable camera movements such as pans, zooms, and tracking shots, as well as improved control over character actions, timing, pacing, and even integrated visual effects.
BytePlus says the model is built for real-world creative and enterprise workflows, from advertising and marketing to e-commerce, training, education and short-form entertainment, where multilingual output and fast iteration are critical. This model aims to make AI video generation more reliable and scalable than just impressive demos by strengthening fundamentals such as natural interaction, temporal coherence, and cinematic stability.
Seedance 1.5 pro is available starting today, with individual users able to try it out through the ModelArk Experience Center, and enterprise users accessing the API through the BytePlus console starting December 24th.
