做视频生成的研究者或开发者，如果被长视频多事件生成的一致性困扰，TunerDiT 的零训练方案直接可用，值得关注其事件边界控制与提示融合的设计。
TunerDiT 提出了一种无需额外训练的多事件视频生成方法，通过分析扩散变换器（DiT）的去噪轨迹，发现文本条件从全局布局到细节的转变点。该方法包含两个关键组件：事件分区掩码（强制事件边界并允许过渡带）和跨事件提示融合（注入相邻事件语义进行后期细化）。在自建的多事件基准测试 Meve 上，TunerDiT 在 8 个指标上达到最优，并能在视频一致性和事件分离之间进行可调权衡。随着事件数量增加，文本对齐性能提升，显示出扩展潜力。
TunerDiT: Training-free Progressive Steering of Diffusion Transformer for Multi-Event Video Generation
Text-to-video (T2V) generation faces challenging questions when generating videos with long horizons containing multiple events. Inspired by the intrinsics of the diffusion process, we probe video diffusion transformers (DiTs) and uncover intrinsic turning points in the DiT denoising trajectory where conditioning text affects generation from global layout to fine-grained details. Building on this finding, we present TunerDiT, a simple yet effective progressive steering method that requires no additional training for multi-event generation. TunerDiT comprises two steering handles: (1) Event-Partitioned Masking that enforces event boundaries while allowing cross-event transition bands; (2) Cross-Event Prompt Fusion that injects neighboring event semantics for late-stage refinement. We contribute a self-curated prompt suite for benchmarking multi-event generation, i.e., Meve. TunerDiT achieves state-of-the-art performance across 8 metrics and offers a tunable trade-off between video consistency and event separation, compared with other training-free methods. The improvement in text alignment increases with the event count, indicating a scaling possibility with increasing event count.