这是一款基于 LTX 2.3 Dev-Dare + 四图参考引导 + 驱动音频 + PromptRelay 时间轴控制 + NAG 音画条件增强 + 三阶段采样打磨 的多元素音频驱动视频应用。用户上传 4张参考图 和 1段驱动音频 后，系统会把四张图分别作为背景、角色、道具和互动元素注入视频生成流程，再结合音频节奏生成一段带声音驱动感的动态视频。
这条流的核心优势是：四张图负责画面元素，音频负责节奏和说话感，PromptRelay 负责时间轴动作。 相比普通 4图参考视频，它多了音频 latent 融合和音画条件增强，更适合做角色开口说话、角色与道具互动、角色与宠物/精灵互动、产品口播展示、AI短剧对话、虚拟人带货、音乐节奏视频和多元素剧情镜头。使用时建议重点控制四项：4张参考图决定元素来源，驱动音频决定节奏与说话感，全局提示词（用来写整体画面规则）决定元素关系，分段提示词（写每个时间段的动作变化）决定每段互动节奏。
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