云上创新，阿里云视频云分享全场景音视频服务背后的场景探索与技术实践

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/17/17600cf5e2c3c1d07677c571febd8439.png","alt":null,"title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"5 月 28 日 - 29 日，2021 阿里云峰会在北京国家会议中心隆重召开，从 “全面上云” 到 “云上创新”，标志着阿里云在 2021 年的全新重磅升级！阿里云 2021 年将加码投入三个方面，","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"做好服务、云钉一体、数据智能","attrs":{}},{"type":"text","text":"，并在 “做深基础、做厚中台、做强生态” 战略基础上，新增 “做好服务” 方向，打造中国最大最好的数字化服务团队。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"本次峰会，阿里云视频云联合达摩院、钉钉推出了优化音视频业务客户体验分论坛、低代码开发分论坛、视觉 AI 开放平台及行业应用分论坛。针对","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"音视频全场景","attrs":{}},{"type":"text","text":"，阿里云视频云推出的互动课堂、互动直播、音视频会议、AI 媒体生产等一系列音视频解决方案和技术最佳实践，作为此次阿里云峰会的重要内容和议题，获得了各界参会嘉宾和行业的广泛关注，以低代码、高性能、强体验的音视频服务为全行业的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"视频化、线上化、数智化","attrs":{}},{"type":"text","text":"转型加速，展现了阿里云视频云在多行业多场景的深入探索和全面布局。","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"互动课堂，让教育更智能","attrs":{}}]},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/03/0314fe8a423f29150160c560a8504405.png","alt":null,"title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"阿里云视频云互动课堂产品负责人 王凯旋","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"教育的未来是基于数字技术的终身学习，未来的学习不再仅限于书本知识，更会扩展到工作技能、社交、认知、兴趣等更广泛的领域。根据麦肯锡的研究报告，预计到 2030 年，基于数字技术的在线教育平台将覆盖中国 9 亿以上的人口。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"一个理想的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"在线教育平台核心环节","attrs":{}},{"type":"text","text":"有三个，首先是稳定的产品的平台，其次是高质量的课程，再者是优质的学习体验，这三个环节既包含了厂商、老师和学生的不同需求，还对音视频编解码、网络传输、AI 智能生产等众多技术提出了更高的要求，这对于任何以一个在线教育公司来说都不是一件容易实现的课题，它意味着很长的研发周期、高企的研发成本和深厚的技术壁垒，特别是一些传统的教育机构面临着更多的困难。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"阿里云视频云最新推出的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"智能互动课堂解决方案","attrs":{}},{"type":"text","text":"，可以帮助各类教育机构一站式地快速搭建教学平台，它覆盖了所有主流的教学场景的功能，深入各类授课场景，直击在线教育实时互动痛点。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"视频云智能互动课堂基于浅绿幕和深度学习技术，实现人像和课件背景的最佳融合，高度还原现场听课效果；通过手势识别、虚拟老师、体态动作识别等，丰富课程趣味性，让教育交互更加有趣。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"针对在线课堂效果不透明的问题，互动课堂自动生成课堂报告，提供专注度检测，提升授课质量和学习效果。此外，场景化的 AI 组件聚焦音乐、美术、美妆穿搭、棋类等，帮助教育机构快速灵活搭建自有品牌的在线互动课堂，满足更多素质教育和兴趣教学场景。","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"互动直播，重塑业务场景","attrs":{}}]},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/26/26c76227e5b76261ff65a179dcade4ef.png","alt":null,"title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"阿里云视频云产品解决方案架构师 王艮","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"直播已经成为行业标配。2020 年前三季度新增近 2.5 万家与视频直播相关企业，较去年同比增长 565.32%，“直播 +”模式重构传统场景、创新商业模式、促进直播向细分领域发展。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"传统的互动直播业务包括基础能力构建、实时互动、内容传播，需要很高的人力开发成本，而阿里云视频云期望给大家提供更快接入、便于互动、高效分发、安全稳定的互动直播服务。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在阿里云视频云看来，真正","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"面向未来的直播服务","attrs":{}},{"type":"text","text":"应该具有高度的互动性，它具备了快速搭建、超低成本、相互嵌合、智能安全等特点。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在阿里云视频云的服务体系下，各类客户都可以通过 LowCode 平台，快速接入业务变现；以丰富的原厂组件和场景化的互动组件，提升 C 端互动体验；基于 AliRTC+AliRTS+AliIM 提升转化效率，实现高效分发；基于阿里先进的多模态内容理解 AI 技术和万亿级数据资源保障直播安全。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"阿里云视频云","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"互动直播解决方案","attrs":{}},{"type":"text","text":"促进了客户的业务发展，以某头部母婴社交 APP 为例，通过阿里云视频云超低延时直播 RTS 产品的应用，其直播延迟降低 80% 以上，卡顿率降低 20%，大大提升了实时互动体验，使 UV 和 GMV 指标得到极大提升。","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"音视频会议，连接企业办公孤岛","attrs":{}}]},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/3e/3ed9c4141135e7b50f62d8e79b7d844d.png","alt":null,"title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"阿里云视频云音视频会议产品负责人 程熙","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"音视频会议和云有什么关系呢？","attrs":{}},{"type":"text","text":"在新冠疫情没有爆发之前，我们一直认为音视频会议是一个私有化的解决方案，疫情期间，我们发现上云的大范围接入、弹性化的部署、高的并发与会议是天然的结合在一起。去年一年内，许多云会议产品得到广泛的应用，钉钉就是其中之一。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"钉钉在 2020 年支持了 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"1.2 亿人次","attrs":{}},{"type":"text","text":"进行视频会议，同时的在线会议数超过了 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"2000 万","attrs":{}},{"type":"text","text":"，超过 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"1000 万家","attrs":{}},{"type":"text","text":"的组织和企业在钉钉上进行了远程视频会议。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"“在服务了这么多企业和支撑了这么多业务的同时，我发现了非常难的一点，那就是","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"连接非常困难","attrs":{}},{"type":"text","text":"，真的非常困难，特别是对于很多数字化转型优势并不明显的中小型企业”，阿里云视频云音视频会议产品负责人程熙分享到，“疫情之前钉钉会议的能力是 16 方，疫情期间我们立马将钉钉的会议能力提升至 302 方，为疫情后的复工复产做了努力，而这仅是我们去年一直在为打通连接做的努力之一”。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"过去一年，阿里云视频云着力践行着连接各企业业务孤岛这件事，从语音系统、人员系统、邮件系统，到日程、行政系统，甚至是会议室管理系统，我们希望让连接变得更加不同，让协作变得更有效率。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在实践中阿里云视频云团队发现，随着需求个性化性、人员数量极剧增加和设备型号更加复杂，业界需要","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"新的基于 “云端一体” 架构的一站式会议解决方案","attrs":{}},{"type":"text","text":"。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"此次推出的阿里云一站式会议解决方案，打通了会前、会中、会后的全会议流程，提升了整体的办公协同能力，连接办公业务孤岛，通过稳定的高性能、低成本的音视频连接人、业务及设备，为客户提供简单易用稳定可靠的音视频协同体验。","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"低代码，让业务数字化触手可及","attrs":{}}]},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/74/74ef7de4ab7fde5c5cd6f1b7bc6f5423.png","alt":null,"title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"阿里云视频云资深技术专家 胡洪卫","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"低代码是一种构建、运行和管理应用的方法论和一种应用场景的极致抽象思维，低代码的平台有很多优势，比如模型驱动、模版化；元数据编程、可视化编程、全生命周期管理、良好的可扩展性等等。从上个世纪 80 年代到今天，低代码的技术演讲整整跨过了 30 年的时间，目前行业都很看好低代码这一技术，有机构预测低代码的市场总规模在 2022 年将会达到 212 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封装，更直观，更简单。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"模块化设计：媒体能力、场景应用模块化实现，按场景动态组装，能力更强。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"易扩展：云、端 API 可扩展，满足业务做深、做厚的更多需求。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"此套低代码解决方案的打造，将会帮助客户","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"速度更快、成本更小、门槛更低、随时随地","attrs":{}},{"type":"text","text":"搭建自己的互动课堂来完成教学任务，让原本不具备的业务运营人员同样具备技术开发的能力，快速响应迅速变化的业务场景需求和变化，人人都成为工程师。","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"AI 智能生产，释放数字传媒内容生产力","attrs":{}}]},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/62/62c66c1501e50674ea900e39a3d66dc1.png","alt":null,"title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"阿里云视频云高级技术专家 邹娟","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"随技术的进步，科技的发展，内容信息载体也由图片变为了视频。如今，互联网 70% 的流量来自于视频，人们的审美习惯也趋向于视频化，并且提出了更高的要求。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"媒体生产的演进也呈现出从人工到智能、从小众到大众、从被动接收到个性互动的特点，视频制作全链路也发生了巨大变化，之前的视频制作必须由专业机构和专业的非编软件来制作，而今天我们可以在手机软件上或者在浏览器上进行在线编辑，之前的媒资审核需要人工来审核，转播需要转播车来转播，而现在仅仅需要一个小小的软件开发包就可完成。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"今天在云计算的加持下，我们把整个媒体生产的模式提升到","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"一个新的时代 —— 云端一体的智能生产架构","attrs":{}},{"type":"text","text":"。云端一体的智能生产架构包含了内容创意、素材管理、剪辑包装、渲染与合成四大核心环节，具有云导播、云剪辑、AI 处理生产等丰富的功能。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在云端一体的架构和 AI 能力的加持下，传媒行业的内容生产将会赋予更多可能性，这种生产化的模式将会极大地重塑行业，让真正的内容创作者从繁复的重复化劳动中释放出来，创造出更丰富的内容、形态、模式。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"于此同时，随着 AI 技术的发展，机器也将更多的具备思考和进化的能力，在阿里云看来，","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"AI 智能生产","attrs":{}},{"type":"text","text":"的未来就是机器可以进化成一个 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"“艺术家”","attrs":{}},{"type":"text","text":"，与人类艺术家的思想碰撞出更多可能。未来，基于视频云技术，阿里云视频云将不断深入到产业中、行业中、场景中，探究真实的场景痛点和潜在可能，打磨全场景音视频解决方案，以云端一体的音视频数智化能力，实现 “云上创新、价值创造”。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"「视频云技术」你最值得关注的音视频技术公众号，每周推送来自阿里云一线的实践技术文章，在这里与音视频领域一流工程师交流切磋。公众号后台回复【技术】可加入阿里云视频云技术交流群，和作者一起探讨音视频技术，获取更多行业最新信息。","attrs":{}}]}],"attrs":{}}]}