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Creator · AYi_AInotes
上次发 15 秒有人说 AI 视频绝不可能撑过半分钟,这次我直接上强度打脸hh,
用最新的 Seedance 2.5,实测跑出了一条整整 30 秒、一镜到底、全程高能的美女跳舞大片!
兄弟们有没有想过,为什么你跑出来的 AI 视频只要超过 5 秒,就开始手脚融化、五官变形、动作崩成异形? 因为你还在盲目碰运气抽卡,而没有在提示词里用「全时序物理动力学」去硬性约束 AI!
长视频和短切片完全是两个维度的物种:
市面上绝大多数工具跑 5 秒很容易,但跨到 30 秒的长镜头,动辄要开几十刀的月费,抽卡失败两三次半个月的额度就见底了;
而这次我直接在 Flatkey(@Flatkey_AI )上调用最新的 Seedance 2.5 模型,实测跑出这条整整 30 秒、全程高能丝滑跳舞的大片,实际成本居然只要几毛钱(不到 $0.1)!
想跑出 30 秒全程不崩的高难度长视频,我这次实测沉淀的 3 个底层防融化心法,全盘开源给大家:
1️⃣ 全时序动态锚定(彻底解决中途面部形变):
长视频最怕播到后半段五官走样。必须在提示词里锁死全局时序:continuous 30-second fluid choreography, seamless motion transition across the entire timeline, absolute character identity persistence across 30s。
2️⃣ 肢体动力学与骨骼硬约束(彻底告别手脚融化):
连续 30 秒大动作对手部和关节是极限考验,必须指定布料与重力物理交互:dynamic body rhythm, natural weight transfer, accurate anatomical proportions, perfectly rendered hands and fingers without distortion, silk outfit reacting naturally to centrifugal force。
3️⃣ 稳定运镜轨道 + 统一主光轴:
30 秒内全程禁止乱切镜头焦段,用 steady continuous tracking shot, 50mm cinematic lens, consistent warm studio rim light 锁死焦平面,画面稳如专业摄影师一镜到底跟拍。Models & stability
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