“AI 不再只是生成画面,它开始导演电影了。”

就在今天,AI 视频领域迎来一个里程碑式突破——Lightricks 正式发布 LTX-2,一款能一次性生成 20 秒、4K 分辨率、50fps、带完整音效与口型同步的叙事级高清视频的生成模型。

更关键的是:它已在 ComfyUI 上线,支持文本/图像输入,几秒出片,还能本地运行!

如果说 Sora 是“未来预告片”,那 LTX-2 就是真正能用的创作工具——它让“写一段文字 → 得到一段电影级短片”成为现实。

🎬 LTX-2 是什么?不只是视频生成,而是“导演级创作”

LTX-2 由知名创意软件公司 Lightricks(Facetune、Videoleap 背后团队)打造,是目前首个在单一扩散过程中同步生成画面与声音的视频模型。

核心突破:

它不是“AI 动画玩具”,而是可直接用于广告、短剧、电影预演的专业级工具

🧪 真实使用案例:LTX-2 到底能做什么?

LTX-2 不只是“生成视频”,而是真正理解镜头语言、节奏、情绪与声音关系的“AI 导演”。以下是五个极具代表性的实测案例,全部基于你提供的 Prompt,由 LTX-2 一次性生成——画面、动作、对白、音效、镜头运动全部同步完成

✅ 案例 1:纽约夜街逃亡——电影级紧张感拉满

Prompt

cinematic action packed shot. the man says silently: “We need to run.” the camera zooms in on his mouth then immediately screams: “NOW!”. the camera zooms back out, he turns around, and starts running away, the camera tracks his run in hand held style. the camera cranes up and show him run into the distance down the street at a busy new york night.

结果

这不是“AI 动画”,而是可直接用于动作片开场的成片级镜头。

✅ 案例 2:怪物卡车狂飙——动态模糊与镜头追踪完美结合

Prompt

an action packed, cinematic shot of a monster truck driving fast towards the camera, the truck passes the camera as it pans left to follow the truck’s reckless drive. dust and motion blur is around the truck, hand held feel to the camera as it tries to track its ride into the distance. the truck then drifts and turns around, then drives back towards the camera until seen in extreme close up.

结果

LTX-2 对“速度感”和“物理反馈”的理解,已逼近专业特效团队水平。

✅ 案例 3:日间脱口秀——情绪张力与剪辑节奏精准拿捏

Prompt

NT. DAYTIME TALK SHOW SET – AFTERNOON
Soft studio lighting glows across a warm-toned set. The audience murmurs faintly as the camera pans to reveal three guests seated on a couch — a middle-aged couple and the show’s host sitting across from them.
The host leans forward, voice steady but probing:
Host: “When did you first notice that your daughter, Missy, started to spiral?”
The woman’s face crumples; she takes a shaky breath and begins to cry. Her husband places a comforting hand on her shoulder, looking down before turning back toward the host.
Father (quietly, with guilt): “We… we don’t know what we did wrong.”
The studio falls silent for a moment. The camera cuts to the host, who looks gravely into the lens.
Host (to camera): “Let’s take a look at a short piece our team prepared — chronicling Missy’s downward path.”
The lights dim slightly as the camera pushes in on the mother’s tear-streaked face. The studio monitors flicker to life, beginning to play the segment as the audience holds its breath.

结果

这已不是“视频生成”,而是叙事结构的自动构建

✅ 案例 4:荒诞家庭剧——死面幽默与视觉反差拉满

Prompt

A warm sunny backyard. The camera starts in a tight cinematic close-up of a woman and a man in their 30s, facing each other with serious expressions. The woman, emotional and dramatic, says softly, “That’s it… Dad’s lost it. And we’ve lost Dad.”
The man exhales, slightly annoyed: “Stop being so dramatic, Jess.”
A beat. He glances aside, then mutters defensively, “He’s just having fun.”
The camera slowly pans right, revealing the grandfather in the garden wearing enormous butterfly wings, waving his arms in the air like he’s trying to take off.
He shouts, “Wheeeew!” as he flaps his wings with full commitment.
The woman covers her face, on the verge of tears. The tone is deadpan, absurd, and quietly tragic.

结果

LTX-2 成功捕捉了“absurd yet tragic”的微妙基调——这正是高级喜剧最难的部分。

✅ 案例 5:皮克斯风格烤箱剧场——拟人化 + 戏剧化 + 音画同步

Prompt

INT. OVEN – DAY. Static camera from inside the oven, looking outward through the slightly fogged glass door. Warm golden light glows around freshly baked cookies. The baker’s face fills the frame, eyes wide with focus, his breath fogging the glass as he leans in. Subtle reflections move across the glass as steam rises.
Baker (whispering dramatically): “Today… I achieve perfection.”
He leans even closer, nose nearly touching the glass.
“Golden edges. Soft center. The gods themselves will smell these cookies and weep.”
Baker: “Wait—”
(beat)
“Did I… forget the chocolate chips?”
Cut to side view — coworker pops into frame, chewing casually.
Coworker (mouth full): “Nope. You forgot the sugar.”
Quick zoom back to the baker’s horrified face, pressed against the oven door, as cookies deflate behind the glass. Steam drifts upward in slow motion.
pixar style acting and timing

结果

这段视频在社区发布后,被网友称为“年度最治愈又最扎心的 AI 短片”。

🛠️ 怎么用?ComfyUI 一键上手

LTX-2 已作为官方合作节点集成到 ComfyUI,使用门槛极低:

步骤如下:

  1. 更新 ComfyUI 至最新版(确保支持视频模块);
  2. 在模板库搜索 “LTX-2”
  3. 选择模式:
  1. 输入提示词,例如:
    a dancer under neon light, cinematic, 4K, 50fps
  2. 设置参数:分辨率(720p~4K)、帧率(最高 50fps)、时长(6/8/10 秒);
  3. 点击运行,十几秒内出片

高级用户还可结合 ControlNet、VHS 节点,实现多镜头拼接、风格迁移等复杂流程。

⚖️ 优势与局限

✅ 优势:

⚠️ 局限:

🔗 如何体验?

🎥 写在最后

过去,我们说“AI 生成视频”是噱头;
现在,LTX-2 证明:AI 已能参与真正的创作流程

它或许还不够完美,但方向无比清晰——
让创意不再被技术门槛束缚,让想法秒变画面。

如果你也想亲手“导演”一段属于自己的 4K 短片,
现在,就是最好的时机。

打开 ComfyUI,输入你的第一句提示词,
世界,将为你动起来。

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