OpenAI的Sora 2视频生成器迎来重大更新，新增了“角色定制”功能，允许用户将几乎任何内容转化为可复用的AI视频角色，也称为“角色客串”。这项功能扩展了Sora原本的AI换脸能力，现在不仅限于用户本人，还可以应用于宠物、插画、玩具等，为AI视频创作带来前所未有的灵活性。新功能还包括视频拼接，能将多个短视频合成为长片段，以及展示热门视频和角色的排行榜。为鼓励用户体验新功能，OpenAI临时开放了美国、加拿大、日本和韩国用户的免邀请注册。

✨ **个性化AI视频角色定制**：Sora 2现允许用户将几乎任何内容，如宠物、插画或玩具，转化为可复用的AI视频角色，极大丰富了AI视频创作的素材库，并提供了“仅限自己”、“分享给互相关注者”或“公开给所有人”的权限控制。

🎬 **多功能视频创作工具**：除了角色定制，Sora 2还新增了视频拼接功能，能够将多个短视频无缝连接，创作出更长、更具叙事性的视频片段，满足复杂的内容制作需求。

🏆 **社区互动与内容发现**：新推出的排行榜功能，能够展示平台中最受欢迎的视频和被频繁使用的角色，促进了用户间的互动和内容分享，也为创作者提供了展示作品的平台。

🚀 **限时开放注册**：为吸引更多用户体验这些新功能，OpenAI在特定地区（美国、加拿大、日本、韩国）临时取消了Sora应用的邀请码注册限制，降低了使用门槛。

OpenAI’s Sora app will now let you turn almost anything into a reusable avatar for its AI-generated videos. These “character cameos” are one of several new features that have been added to the Sora 2 video generator, alongside clip stitching and leaderboards that showcase the app’s most popular videos and cameos.

Character cameos were teased last week, and build on the existing feature that allows Sora users to create AI deepfakes of themselves that can be used by everyone else on the platform, if permitted. Those same capabilities can now be used on other subjects, such as pets, illustrations, and toys, and the feature is launching with a selection of pre-made characters that users can add to videos.

“Once created, each character comes with its own permissions, separate from your personal likeness: keep it just for yourself, share it with mutual followers, or open it to everyone on Sora,” OpenAI says in the latest Sora release notes. “Give your character a display name and handle, and tag it whenever you want it to appear in a video.”

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OpenAI says that character cameos can be created using “an original persona” that users generate in Sora, but it’s unclear if the feature will accept fictional people generated using other AI tools, or how photorealistic they’re permitted to be. If you can just upload any AI-generated person, OpenAI hasn’t explained how Sora would distinguish these from images of real people. The update is being launched within days of celebrity video platform Cameo slapping OpenAI with a trademark infringement lawsuit over its usage of “cameo” in Sora app features.

Sora is also introducing video stitching capabilities that can connect multiple videos together to create longer, multi-scene clips, and leaderboards that show the most remixed videos and the most cameoed users and characters. OpenAI has temporarily made the Sora app more accessible to get people using these features, announcing yesterday that people in the US, Canada, Japan, and Korea can sign up without an invitation code for a “limited time.”