ByteDance's Seedance 2.5 Doubles Video Length to 30 Seconds, Adds 50-Reference Input and Timestamp-Level Editing
AI video model releases
ByteDance's Seedance 2.5 Doubles Video Length to 30 Seconds, Adds 50-Reference Input and Timestamp-Level Editing
ByteDance's Seedance 2.5 generates synchronized audio and video up to 30 seconds in a single pass, double the 15-second ceiling of Seedance 2.0.
The model accepts up to 50 references per clip (images, video, audio, text combined), up from the prior limit of 3 videos, 9 images, and 3 audio clips (15 non-text items); ByteDance has not disclosed per-type sub-limits and text also counts toward the 50.
Dreamina will add an editing feature letting users select a specific timestamp or person within a generated video and revise just that portion instead of regenerating the whole clip.
Seed's model page states a generated video can be extended twice, but does not specify how many seconds each extension adds, so total achievable length is unclear.
ByteDance claims improvements in scene transitions, character consistency, motion stability, and visual realism, but the announcement provides no benchmark figures or comparison data to support these claims.
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