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如何使用Sora,OpenAI的新視頻生成工具

OpenAI最近向公眾發布了其視頻生成模型Sora。這一公告是在公司“shipmas”活動的第五天發布的,這是一個為期12天的技術發布和演示馬拉松。以下是您需要了解的內容,以及如何立即使用這個視頻模型。

Sora是什麼?
Sora是一個強大的AI視頻生成模型,可以從文本提示創建視頻、為圖像動畫,或以新的風格重混視頻。OpenAI在二月份首次預覽了這個模型,但今天是該公司首次將其釋出供更廣泛的使用。

這次發布有什麼新特點?
Sora的核心功能——使用簡單的提示創建令人印象深刻的視頻——與二月份預覽的內容相似,但OpenAI在這次更廣泛的發布之前,努力使模型更快且成本更低。有幾個新功能,其中兩個特別突出。

一個名為Storyboard的功能,允許用戶創建多個AI生成的視頻,然後像使用傳統視頻編輯器(如Adobe Premiere Pro)一樣將它們組合在時間軸上。

第二個功能是一個作為創意畫廊的反饋。用戶可以將他們生成的Sora視頻發佈到這個反饋中,查看某些視頻背後的提示,進行調整,並獲得靈感,OpenAI表示。

您可以用它做什麼?
您可以從文本提示生成視頻,使用名為Remix的工具更改視頻風格和元素,並通過Storyboard將多個剪輯組合在一起。Sora還提供多種預設風格供您應用,例如陰鬱的黑色電影風格或紙板和手工藝風格,這種風格給人一種定格動畫的感覺。您還可以修剪和循環您創建的視頻。

誰可以使用它?
要使用Sora生成視頻,您需要訂閱OpenAI的其中一個高級計劃——ChatGPT Plus(每月20美元)或ChatGPT Pro(每月200美元)。這兩個訂閱計劃還包括對其他OpenAI產品的訪問。擁有ChatGPT Plus的用戶可以生成長達五秒、分辨率高達720p的視頻。此計劃允許您每月創建50個視頻。

擁有ChatGPT Pro訂閱的用戶可以生成更長且分辨率更高的視頻,分辨率上限為1080p,持續時間為20秒。他們還可以讓Sora從單個提示中同時生成最多五個視頻變體,這樣可以更快地查看選擇。Pro用戶每月限制生成500個視頻,但也可以創建無限制的“放鬆”視頻,這些視頻不會立即生成,而是排隊等待網站流量較低時生成。

這兩個訂閱計劃都可以創建三種長寬比的視頻:豎屏、橫屏和方形。

如果您沒有訂閱,您將只能查看Sora生成的視頻反饋。

OpenAI今天開始全球推出Sora,但該公司表示,在“大多數歐洲地區”推出會需要更長時間。

我可以在哪裡訪問它?
OpenAI已經將Sora從ChatGPT中分離出來。要訪問它,請前往Sora.com並使用您的ChatGPT Plus或Pro賬戶登錄。(MIT Technology Review在發稿時無法訪問該網站——網站上的一則通知表明,由於“目前流量繁重”,註冊已暫停。)

我們是如何走到這一步的?
自從OpenAI在二月份首次揭曉Sora以來,發生了許多事情。其他科技公司也推出了視頻生成工具,例如Meta的Movie Gen和Google的Veo。還有許多反對聲音。例如,早期獲得Sora試驗的藝術家因為OpenAI在未經補償的情況下訓練該工具使用藝術家的作品而泄露了這個工具以示抗議。

接下來會怎樣?
與任何新模型的發布一樣,OpenAI在防止Sora被用於惡意、非法或不道德的目的(例如製作深度偽造視頻)方面採取了哪些措施仍有待觀察。關於監管和安全性問題,一名OpenAI員工表示,他們“可能不會在第一天就做到完美”。

另一個懸而未決的問題是,每次生成視頻時,Sora會消耗多少計算能力和能源。生成視頻所需的計算時間遠遠超過使用ChatGPT這類工具生成典型文本響應所需的時間和能量。AI的繁榮已經成為一個能源消耗大戶,這對於那些旨在減少排放的科技公司來說是一個挑戰,而Sora及其他類似視頻模型的廣泛可用性有可能使這個問題變得更糟。

在這一新工具的推出中,我們不難看出,技術的發展正在加速,但隨之而來的倫理和環境問題亦不容忽視。OpenAI的Sora不僅是視頻創作的工具,更是對未來內容創作方式的一次挑戰,這需要我們在享受科技進步的同時,對其潛在的負面影響保持警惕。

以上文章由特價GPT API KEY所翻譯及撰寫。而圖片則由FLUX根據內容自動生成。

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