特点>>>只替换人物形象，场景和动作尽量不变。
这是一款专注于视频人物替换的 AI 应用。上传参考人物图后，系统会将原视频中的主体人物替换为新的角色形象，同时尽量保持原视频的场景、动作、运镜和整体表演节奏不变，输出一条“人变了，但戏还在”的成片视频。适合用于角色换脸式创意演绎、二次元人物替换、IP形象套用、短视频主角替换等场景。
它特别适合做：单图角色动作迁移、人物跳舞、二次元角色驱动、写实人物动作复现，以及带补帧优化的顺滑动作视频。对于普通人物，主要用 参考角色图 + 表情强度 + 视频时长 + 输出帧率 就够了；对于特殊角色，这条流还单独做了 面具、头盔角色 开关。purge vram 这一版的价值主要在于更照顾显存管理，但这部分不需要对终端用户暴露。
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