这是一款基于 LTX2.3 双人数字人 + 图片驱动 + 音频驱动 + PromptRelay 分段对话控制 + 双人角色 LoRA + IC Edit 去字幕 / 去水印 LoRA + NAG 音画条件增强 + 三阶渲染打磨 的高稳定无字幕双人对话视频应用。用户上传一张 双人首帧图 和一段 对话音频，系统会先提取人声，再把音频编码成 Audio Latent，与双人画面的 Video Latent 融合，让两个人物根据对话节奏产生自然口型、表情、眼神交流和轻微动作。
这版相比普通双人数字人，重点增强在 双人同框稳定 + 无字幕干净成片。它加入了 Dual-Character LoRA、VBVR 运动增强、运动跟踪控制 LoRA、NAG 音画条件增强、IC Edit 去字幕 LoRA、IC Edit 去水印 LoRA 和强负向词，用来减少双人对话里常见的左右站位漂移、人物身份互换、脸部变化、字幕残留、水印、乱码文字和画面脏字。核心优势是：一张双人图 + 一段对话音频，生成无字幕、无水印、双人站位更稳定的对话视频。 使用时建议重点控制四项：双人首帧图决定人物身份和左右站位，驱动音频决定对话节奏，全局提示词（用来写整体画面规则）决定场景和人物关系，分段提示词（写每个时间段的动作变化）决定每段对白、表情和互动。
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