IT之家 12 月 17 日消息,谷歌公司今天(12 月 17 日)發(fā)布公告,正式發(fā)布了視頻生成模型 Veo 2,官方聲稱新模型可以更好地理解現(xiàn)實(shí)世界物理、人類運(yùn)動(dòng)及表達(dá)的細(xì)微差別,進(jìn)一步提升整體細(xì)節(jié)和逼真度。
谷歌 Veo 2 模型可以生成分辨率最高 4K(4096 x 2160 像素),時(shí)長為 2 分鐘的視頻片段,相比較 OpenAI 的 Sora 模型,分辨率是后者的 4 倍,時(shí)長是后者的 6 倍。
不過目前在 Google 的實(shí)驗(yàn)性視頻創(chuàng)建工具 VideoFX 中,Veo 2 模型分辨率上限為 720p,長度為 8 秒。
DeepMind 產(chǎn)品副總裁 Eli Collins 表示:“在接下來的幾個(gè)月里,我們將根據(jù)用戶的反饋繼續(xù)進(jìn)行迭代?!?/p>
與 Veo 一樣,Veo 2 可以在給定文本提示或文本和參考圖像的情況下生成視頻,還可以更真實(shí)地模擬運(yùn)動(dòng)、流體動(dòng)力學(xué)和光的屬性。據(jù) DeepMind 稱,這包括不同的鏡頭和電影效果,以及“細(xì)致入微”的人類表達(dá)。
Deepmind 表示,為了降低 Deepfake 的風(fēng)險(xiǎn),利用專有的水印技術(shù) SynthID,它將隱形標(biāo)記嵌入到 Veo 2 生成的幀中。
實(shí)例 1:
提示詞:
The camera floats gently through rows of pastel-painted wooden beehives, buzzing honeybees gliding in and out of frame. The motion settles on the refined farmer standing at the center, his pristine white beekeeping suit gleaming in the golden afternoon light. He lifts a jar of honey, tilting it slightly to catch the light. Behind him, tall sunflowers sway rhythmically in the breeze, their petals glowing in the warm sunlight. The camera tilts upward to reveal a retro farmhouse with mint-green shutters, its walls dappled with shadows from swaying trees. Shot with a 35mm lens on Kodak Portra 400 film, the golden light creates rich textures on the farmer’s gloves, marmalade jar, and weathered wood of the beehives.
攝像機(jī)輕輕地穿過一排排粉彩涂漆的木制蜂箱,嗡嗡作響的蜜蜂在鏡頭中滑進(jìn)滑出。鏡頭落在站在中央的優(yōu)雅農(nóng)夫身上,他潔白的養(yǎng)蜂服在金色的下午陽光下閃閃發(fā)光。他舉起一罐蜂蜜,微微傾斜以捕捉光線。在他身后,高大的向日葵在微風(fēng)中有節(jié)奏地?fù)u擺,它們的花瓣在溫暖的陽光下閃閃發(fā)亮。攝像機(jī)上移,顯露出一個(gè)帶有薄荷綠色百葉窗的復(fù)古農(nóng)舍,墻壁上帶有搖曳樹木投下的斑駁陰影。使用 35mm 鏡頭和柯達(dá) Portra 400 膠片拍攝,金色的光線在農(nóng)夫的手套、橘子果醬罐和蜂箱的風(fēng)化木材上創(chuàng)造出豐富的質(zhì)感。
實(shí)例 2:
提示詞:
This medium shot, with a shallow depth of field, portrays a cute cartoon girl with wavy brown hair, sitting upright in a 1980s kitchen. Her hair is medium length and wavy. She has a small, slightly upturned nose, and small, rounded ears. She is very animated and excited as she talks to the camera.
這張中景照片,具有淺景深,描繪了一位可愛的卡通女孩,留著波浪狀的棕色頭發(fā),端坐在 1980 年代的廚房里。她的頭發(fā)是中等長度和波浪狀的。她有一個(gè)小而稍稍翹起的鼻子,小而圓的耳朵。她非常活潑和興奮地對著攝影機(jī)說話。
實(shí)例 3:
提示詞:
A low-angle shot captures a flock of pink flamingos gracefully wading in a lush, tranquil lagoon. The vibrant pink of their plumage contrasts beautifully with the verdant green of the surrounding vegetation and the crystal-clear turquoise water. Sunlight glints off the water’s surface, creating shimmering reflections that dance on the flamingos’ feathers. The birds’ elegant, curved necks are submerged as they walk through the shallow water, their movements creating gentle ripples that spread across the lagoon. The composition emphasizes the serenity and natural beauty of the scene, highlighting the delicate balance of the ecosystem and the inherent grace of these magnificent birds. The soft, diffused light of early morning bathes the entire scene in a warm, ethereal glow.
一個(gè)低角度鏡頭捕捉到一群粉紅色火烈鳥優(yōu)雅地涉水在一個(gè)郁郁蔥蔥而寧靜的瀉湖中。它們羽毛的鮮艷粉色與周圍植被的翠綠色和晶瑩剔透的碧綠水面形成了美麗的對比。陽光在水面上閃爍,創(chuàng)造出在火烈鳥羽毛上舞動(dòng)的閃爍倒影。鳥兒優(yōu)雅彎曲的脖子沒入水中,以慢步走過淺水,它們的動(dòng)作在瀉湖上蕩漾起輕柔的漣漪。構(gòu)圖強(qiáng)調(diào)了場景的寧靜和自然之美,突出生態(tài)系統(tǒng)的微妙平衡以及這些壯麗鳥類所固有的優(yōu)雅。清晨柔和、彌漫的光將整個(gè)場景籠罩在溫暖而夢幻的光輝中。
IT之家附上更多演示視頻如下:
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