视频提示词案例

实战案例:用AI提示词制作国风仙侠手游45秒CG预告片,从御剑云海到万剑归宗大战

发布时间:2026年09月20日 11:25:11

以国风仙侠手游《九霄剑歌》新资料片45秒CG预告片为真实场景,演示如何用Vidu 2.0完成从白衣剑修御剑穿云海、桃花林落英对决到万剑归宗法术大战的全流程,附角色一致性、布料解算和法术特效的提示词写法与踩坑记录。


背景

国风仙侠手游《九霄剑歌》要上**「葬剑谷」新资料片**,买量团队需要一条45秒CG预告片投放在抖音、B站和TapTap。传统CG外包报价25-40万、周期4-6周。团队决定用国产Vidu 2.0(对国风语义理解和东方人面孔表现更好)+人工后期合成,目标10天交付。

仙侠CG的情绪公式是**「白衣+长剑+云海的飘逸感」对上「黑金+魔气+破碎的压迫感」。AI最容易崩的是角色脸跨镜头不一致、汉服交领穿成和服、剑气特效变成激光灯管、手指握剑姿势畸形**。

第一步:角色圣经与美术规范

提示词

你是一位国风仙侠游戏CG导演。《九霄剑歌》45秒预告片:

1. 角色圣经(跨镜头严格一致):
   - 男主「沈霜」:20岁东方面孔,高马尾黑发用白玉冠束起,白色广袖交领汉服(右衽!),银线云纹刺绣,背负长剑「霜序」(素白银装剑格,青色剑穗)
   - 反派「无相」:黑雾构成的人形,面部只有一双金色竖瞳,黑金甲片悬浮在身体周围
   - 关键:汉服必须是交领右衽(左侧衣襟压右侧),绝不能是和服、绝不能左衽

2. 分镜:
   - 0-8秒:沈霜独立悬崖,衣袂猎猎,脚下万里云海翻涌
   - 8-20秒:御剑飞行,人剑合一穿破云层,桃花林上空掠过
   - 20-32秒:桃花林对决,沈霜 vs 无相,落英缤纷中剑气对撞
   - 32-42秒:大招「万剑归宗」,上百把飞剑从云海中升起组成剑阵
   - 42-45秒:游戏Logo+「9月30日 葬剑谷开启」

3. 色彩:正派(月白+青玉+桃花粉);反派(玄黑+暗金+魔雾紫)
4. 避坑:和服化、左衽、西方面孔、激光灯管特效、六指、剑凭空消失

第二步:云海出场与御剑飞行(Vidu 2.0)

提示词

[镜头1:云海独立 0-8秒]
Chinese xianxia cinematic, young male sword cultivator with high black ponytail tied with white jade crown standing on cliff edge, flowing white wide-sleeved hanfu robe with silver cloud embroidery, robe sleeves and long black hair whipping violently in strong wind, vast sea of churning clouds below stretching to horizon, cold jade-toned lighting, low angle heroic composition, 4K, --motion 2 --duration 8s
[Negative] kimono, samurai, western face, blonde hair, cross-collar left over right, armor, modern clothing

[镜头2:御剑飞行 8-20秒]
Dynamic chase cam of the same white-robed cultivator standing upright on a flying silver longsword with cyan tassel streaming behind, skimming above cloud layer then breaking through, pink peach blossom petals swirling as he passes over a blossom forest at dusk, elegant and weightless movement, trailing faint cyan sword aura, motion blur on clouds, 4K, 12s
[Negative] sitting on sword, broomstick pose, laser beam, sci-fi engine, western castle, hands with six fingers

产出:云海翻涌和广袖猎猎的动态非常仙。踩坑:第一批素材汉服交领方向不稳(偶尔左衽),解决方法是在每个镜头提示词里重复「cross-collar right over left(右衽)」+ 负向词显式排除「left over right」。

第三步:桃花林对决与布料解算

提示词

[镜头3:剑气对撞 20-32秒]
Epic duel in ancient peach blossom forest, white-robed jade-crown cultivator clashing swords with a towering humanoid figure made of black smoke wearing floating black-gold armor plates and glowing golden slit eyes, shockwave from crossed blades sending hundreds of pink petals blasting outward radially, white cyan sword energy vs dark purple demonic mist energy colliding, cloth and hair reacting to shockwave, dramatic rim light, 4K, --motion 3 --duration 12s
[Negative] lightsaber, star wars, neon tube, static hair, petals falling upward, modern building, western demon with horns and red skin

[细节约束]
剑气是半透明能量流(translucent energy stream)带流动光粒,不是实体灯管;冲击波到达瞬间花瓣先静止0.3秒再呈放射状爆开

产出:正反派青白对紫黑的色彩对冲张力强。踩坑:剑气初版像星球大战光剑,必须显式负向排除「lightsaber/star wars/neon tube」并描述能量流质感。

第四步:万剑归宗大阵

提示词

[镜头4:万剑归宗 32-42秒]
Spectacular wide shot, hundreds of ornate Chinese longswords rising vertically out of a glowing cloud sea one after another, assembling into a vast rotating sword formation array in the sky, rune circles of cyan light glowing beneath, white-robed cultivator at center with one hand raised controlling the array, his hair and sleeves lifted by rising energy, dark storm clouds parting above, golden light breaking through, mythic scale, 4K, --motion 2 --duration 10s
[Negative] european broadswords, cross shields, gun barrels, missiles, swords melting, random floating metal, low detail crowd

[镜头5:Logo定格 42-45秒]
Dark background, a single silver sword flying toward camera and freezing point-first, resolving into game logo 九霄剑歌 in elegant gold calligraphy, date text 9月30日 葬剑谷开启 appearing below, 4K, 3s

产出:上百把飞剑从云海升起的阵列感极具压迫力。踩坑:飞剑容易被生成成欧洲阔剑或导弹,负向词列全「european broadswords/missiles/gun barrels」并强调「ornate Chinese longswords」。

第五步:音频与买量版本矩阵

提示词

1. 音乐:国风交响——竹笛+古筝引入,对决段落加入太鼓低频,万剑归宗时女声吟唱+全编制交响推到顶点
2. 音效:剑鸣用金属泛音+风声混合,不要激光「biu」声;花瓣爆开加布料/纸张质感的细碎声
3. 节奏点:每个镜头切换卡在鼓点上;剑气对撞瞬间音乐全部抽空0.5秒再炸回来
4. 买量版本矩阵:
   - 45秒完整版(TapTap/B站)
   - 15秒前3秒抓眼版(抖音:直接从剑气对撞开始,结尾3秒Logo)
   - 6秒试玩引导版(万剑归宗画面+立即下载按钮位置预留)
5. 字幕:预告片内不加人物对白,只在结尾放标题;所有字体用书法体但避免生僻字

成果与复盘

首周买量测试中,15秒版在抖音的3秒完播率达71%,CPI(单次安装成本)比上一支实拍真人COS素材低38%,TapTap预约量新增26万。全流程10天、成本约6万元(含外包配乐)。

6条可复用清单

  1. 右衽必须逐镜头强调:「cross-collar right over left」+负向排除左衽,AI对汉服结构理解不稳定
  2. 角色锚点信息每个镜头重写:玉冠、高马尾、银线云纹、青穗——别指望跨镜头自动记住
  3. 剑气写能量流不写光:translucent energy stream + flowing particles,负向排除lightsaber防光剑化
  4. 大场面先静后爆:冲击波瞬间花瓣静止0.3秒再放射爆开,比一直动更有打击感
  5. 兵器写死形制:ornate Chinese longswords,负向词排除欧式阔剑、导弹、枪管
  6. 买量素材按版本矩阵剪:45秒品牌向+15秒前3秒冲突+6秒CTA版,同一批AI镜头三吃