以下是关于文字生成视频的 AI 能力的相关信息:
文字生成视频的 AI 产品有:
1. Pika:擅长动画制作,支持视频编辑。
2. SVD:可在 Stable Diffusion 图片基础上直接生成视频,是 Stability AI 开源的 video model。
3. Runway:老牌 AI 视频生成工具,提供实时涂抹修改视频的功能,但收费。
4. Kaiber:视频转视频 AI,能将原视频转换成各种风格的视频。
5. Sora:由 OpenAI 开发,可生成长达 1 分钟以上的视频。
更多的文生视频的网站可以查看:https://www.waytoagi.com/category/38 (内容由 AI 大模型生成,请仔细甄别)
对于视频模型的评估,可从以下方面全面评估 AI 视频生成模型的各种能力:
|测试类型|提示词(Prompt)|
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|生成质量|“A highresolution 4K video of a sunset over the ocean with smooth transitions.”|
|生成速度|“A short 10second clip of a running dog in a park.”|
|一致性|“A person walking from left to right across the screen with consistent motion and background.”|
|多样性|“A fantasy world with dragons flying in the sky and wizards casting spells.”|
|可控性|“Generate a video of a beach scene with a setting sun and seagulls flying,with the ability to change the weather from sunny to cloudy.”|
|音频生成|“A video of a thunderstorm with synchronized sound effects of thunder and rain.”|
|界面友好度|“Test the user interface by generating a video of a mountain landscape with easytouse controls for adjusting the time of day and weather conditions.”|
|可定制性|“Create a video of a city street with customizable options for the number of people,types of vehicles,and time of day.”|
|计算资源|“Generate a 30second video of a busy market scene and measure the CPU,GPU,and memory usage.”|
|运行成本|“Produce a 2minute educational video on the water cycle,evaluating the cost efficiency for longer videos.”|
|错误处理|“Generate a video with an incomplete prompt to test how the model handles missing information.”|
OpenAI 发布的首款文生视频模型 Sora 具有强大的能力,不仅能根据文字指令创造逼真且充满想象力的场景,还能生成长达 1 分钟的超长视频,且一镜到底。在视频中的女主角、背景人物等方面都达到了惊人的一致性,各种镜头随意切换,人物保持了神一般的稳定性。相比之下,Runway Gen 2、Pika 等 AI 视频工具在几秒内的连贯性方面还有待突破。
2025-02-05