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大模型Sora刷屏!最新动态在这里

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    


这几天

你的社交平台

一定被文生视频大模型“Sora”刷屏了吧!



看到Sora的强大导演能力

不少网友调侃:

还没开工,饭碗先丢了……


Sora为什么能引发关注?


一方面,是其强大的“基因”

推出Sora模型的

是美国人工智能研究公司OpenAI

也就是推出ChatGPT的那家公司


最近一两年

OpenAI堪称AI界“顶流”

其推出的任何产品

都自带“流量”加持



另一方面

Sora生成视频的效果确实惊人

下面请看



要知道

用AI生成视频的工具早已出现

比如2022年底

谷歌CEO桑达尔·皮查伊亲自在推特上

“安利”了两款文生视频工具

Imagen Video与Phenaki

前者主打视频品质

后者主要挑战视频长度

称得上各有千秋


↑点击阅读相关文章


再比如,Meta

在文生视频方面也有所布局

其推出的文生视频模型

Make-A-Video

可从给定的文字提示生成短视频


没有对比

就没有伤害


网友将目前

市面上流行的文生视频工具

做了个对比

在输入相同Prompt(提示词)的情况下

Sora的表现可以说

遥遥领先


一方面体现在持续时长上

大多数AI生成的视频时长在4-10秒

而Sora可制作60秒视频


另一方面体现于镜头切换与画面流畅度

绝大多数AI生成的视频都是单镜头

而Sora已实现在一个视频里

多角度镜头的组合



效果大幅超越此前备受追捧的

Runway和Pika等AI视频创业公司



Sora的意义在哪里?


2月16日

360创始人周鸿祎发布微博

提到自己对Sora的看法:

“现在所有的文生图、文生视频

都是在2D平面上

对图形元素进行操作

并没有适用物理定律”

他表示

这次Sora只是小试生刀

它展现的不仅仅是视频制作能力

大模型对真实世界

有了理解和模拟之后

会带来新的成果和突破



周鸿祎还认为

Sora的诞生

意味着AGI(通用人工智能)的实现

可能从10年20年

缩短至一两年


特斯拉CEO马斯克

则在社交媒体上评论称:

“gg humans”

gg为网络用语good games的缩写

常用于感叹“输的心服口服”


市场研究公司ABI research

高级分析师里斯海登认为

这类人工智能模型

可能会对数字娱乐市场

产生重大影响

新的个性化内容

将在各个渠道传播


美国旧金山早期投资人Zak Kukoff预测

一个不到5人的团队

将在5年内

用文生视频模型和非工会的劳动力

制作一部票房收入

超过5000万美元的电影


当然,Sora并非完美!


目前,Sora仍属于半成品

OpenAI称

当前的模式存在弱点

太复杂的场景无法模拟真实世界

也容易混淆空间细节


比如下面的效果图



穿过篮筐的篮球

悬浮移动的椅子

都违反了“常理”


OpenAI发布的数十个视频Demo中

保留了不少穿帮画面

如果将这些镜头放到影视剧里

或者作为精心制作的长视频素材

需要做很多修补工作


哪些人先用到Sora?


Sora是一项改变世界的产品

其生成的视频

或许让专家也难以分辨真假


OpenAI表示

Sora将首先提供给网络安全教授

以评估产品的危害或风险


一些视觉艺术家、设计师和电影制作人

也能获得Sora的访问权限

以此收集关于创意专业人士

如何使用Sora的反馈


待到Sora开放的那一天

你会用它做什么呢?




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