人工智能公司Synthesia推出数字视频化身——这是它们的工作原理

币界网Pubblicato 2024-08-09Pubblicato ultima volta 2024-08-09

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你曾经想要一个数字双胞胎吗?或者害怕重新录制一系列视频?就像科幻故事情节一样,总部位于伦敦的合成媒体开发公司Synthesia推出了一项服务,让客户能够创建自己的数字视频表示,他们可以在社交媒体和营销活动中使用。

Synthesia在周三的直播中首次宣布推出个人化身。Synthesia声称,这些化身可以通过网络摄像头或手机上的两分钟视频生成,尽管我发现创建它们需要更长的时间。

该公司表示,其个人AI化身可以用来制作员工培训视频、产品解释、销售和营销材料,或与客户互动。对企业的好处是,这些不同的视频可以使用相同的人工智能化身创建,而无需在全新的面对面会话中重新录制演员或员工。

然而,也有一些局限性,我将深入探讨。

防止误用

联觉认识到,创建真人高保真复制品的能力可能会被滥用,用于恶意或欺骗性目的。Synthesia告诉Decrypt,它通过以下三个原则来防止其技术被用于创建人工智能生成的deepfakes:同意、控制和协作。

Synthesia公司事务和政策主管Alexandru Voica表示:“未经他人明确同意,我们绝不会创建人工智能化身。”。“我们的平台为用户提供了一个安全的环境,确保他们的数据是安全的,他们可以控制自己的化身,并通过在创建时进行内容审核来最大限度地减少滥用。”

就Voica而言,在化身生成开始之前,用户被要求同意Synthesia Limited及其供应商收集、使用、存储和披露他们的视频和音频记录,以“验证个人化身提交”

Voica表示,Synthesia还与行业同行、政策制定者和其他人合作,为负责任地使用人工智能制定最佳实践。

沃伊卡说:“未经同意的深度伪造是网上有害内容的最大来源。”。“因为Synthesia化身不能在没有他们所代表的人的明确同意的情况下制作,所以我们不从事未经同意的deepfakes业务,这大大限制了我们平台和个人化身被滥用的可能性。”

当被问及是否有Synthesia不允许的个人化身或一般化身时,Voica表示,该公司使用先进的技术过滤器和人类内容审核来确保Synthesia不会被用来促进创建不恰当或有害的内容。

Voica告诉Decrypt:“当有人试图制作视频时,该内容将在生成之前通过我们的内容审核工作流程。”。“如果发现违反了我们的政策,视频永远不会被创建。屡次违规或严重违规也可能导致他们的帐户被禁用。”

创建您的头像

要开始使用,用户必须创建Synthesia帐户。个人化身可在“初学者”、“创建者”和“企业”级别上使用。Starter和Creator帐户的年度订阅费用分别为每月18美元至59美元。寻求企业许可的企业必须联系Synthesia以确定定价。

这个过程在我的MacBook Pro上比在我的Windows 11 PC上运行得更好,两者都使用Brave浏览器。当你准备好了,Synthesia会询问你是想直接从平台录制还是上传视频。我选择了录音。

根据Synthesia的说法,个人化身是使用一种称为自动对齐的高级循环技术创建的,该技术可以确定化身何时说话,并使身体动作更加灵敏。个人化身可用的语言包括英语、德语、法语、西班牙语、阿拉伯语、克罗地亚语、菲律宾语、希腊语、印地语、意大利语、罗马尼亚语、俄语、土耳其语和乌克兰语。

在录制之前,Synthesia建议使用安静、光线充足的环境,在段落之间停顿,不要遮住脸,使用自然的肢体语言,保持积极和微笑。

根据我使用该工具的经验,其他建议是确保相机不要太近,这样你在画面中看起来会更小。如果您决定上传视频而不是使用录音机,请使用麦克风以提高音频质量。

Synthesia会给你一个脚本来阅读,背诵大约需要三分钟。根据化身生成器的说法,完成这个过程需要一到五分钟的音频和视频。

对于可能对公司或内容创作者的品牌产生重大影响的事情来说,这个过程相对简单。

虽然上传、录制和阅读剧本的过程不到五分钟,但Synthesia表示,实际生成个人头像可能需要24小时。我的第一个视频花了大约10个小时才制作出来。之后,我提供的后续提供新脚本的视频大约需要五分钟。

这是我在Synthesia的个人头像。你怎么认为?

完成的视频的大小可以更改,以适应其上传到的平台的需求,无论是YouTube、Instagram还是TikTok。我发现,使用个人头像的新脚本生成新视频大约需要五分钟。

然而,如果不生成新的个人头像,你就无法更改你的背景、服装或外表,如上所述,这可能需要一天的时间。

虽然个人化身非常令人印象深刻,但看到自己的动画版本很奇怪,这是“恐怖谷”的一个例子。恐怖谷是指人类逼真的表现几乎太接近真实事物的地方,使其外观更加令人不安。

尽管如此,这些视频化身仍然令人印象深刻,如果观众不仔细检查,它们可能会被视为真实的。

由Ryan Ozawa编辑。

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