Setting Egress at Creation
虽然Seedance 2.0在单次生成的十几秒内保持了较好的连贯性，但将时间尺度拉长，问题便开始浮现。目前所有视频模型都面临着“记忆衰减”的挑战。
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Regions with many nearby points keep subdividing. Regions with few or no points stay large. The tree adapts to the data: dense areas get fine-grained cells, sparse areas stay coarse. The split grid is predetermined (always at midpoints), but the tree only refines cells that need it. Sparse regions stay as single large nodes while dense regions subdivide deeply.
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But with brand revamps, she feels it only really works if it feels "authentic".