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|G1 = IT
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{{Infobox software
| name = Google Duo
| logo = Google Duo icon.svg
| logo_size = 100px
| screenshot = <center>[[File:Google Duo.png|frameless|center]]</center>
| caption = Google Duo螢幕截图
| collapsible =
| author =
| developer = [[Google]]
| released = {{Start date and age|2016|08|16|df=no}}（美国）<ref name="Gibbs-16-08-2016">{{cite web|last1=Gibbs|first1=Samuel|title=Duo video calling app: Google launches cross-platform answer to FaceTime|url=https://www.theguardian.com/technology/2016/aug/16/duo-video-calling-app-google-android|website=The Guardian|publisher=Guardian Media Group|accessdate=2016-08-16|date=2016-08-16|language=en|archive-date=2020-11-28|archive-url=https://web.archive.org/web/20201128000144/https://www.theguardian.com/technology/2016/aug/16/duo-video-calling-app-google-android|dead-url=no}}</ref>
| programming language =
| operating system = {{Plainlist|
*[[Android]] 4.1或以上
*[[iOS]] 9.0或以上
}}
| platform =
| size =
| language = [[英语]]
| genre = [[视訊電话]][[流動應用程式|手机应用]]
| license =
| website = {{URL|https://duo.google.com/}}
}}

'''Duo'''是[[Google]]开发的一款[[视訊電话]][[流動應用程式|手机应用]]，同时提供[[Android]]和[[iOS]]版。2016年5月18日，它在[[Google I/O]]大会上<ref name="Bohn-2016-5-18">{{Cite web|url=http://www.theverge.com/2016/5/18/11690728/google-duo-video-call-app-vs-apple-facetime-io-2016|title=Google Duo makes mobile video calls fast and simple|accessdate=2016-05-18|date=2016-05-18|last=Bohn|first=Dieter|language=en|website=The Verge|archive-date=2019-03-23|archive-url=https://web.archive.org/web/20190323064012/https://www.theverge.com/2016/5/18/11690728/google-duo-video-call-app-vs-apple-facetime-io-2016|dead-url=no}}</ref><ref>{{Cite web|url=http://www.cnet.com/news/googles-duo-is-another-video-chat-service-taking-on-facetime-skype/|title=Google's Duo is another video chat service taking on Facetime, Skype|accessdate=2016-05-18|language=en|website=CNET|archive-date=2018-10-02|archive-url=https://web.archive.org/web/20181002013548/https://www.cnet.com/news/googles-duo-is-another-video-chat-service-taking-on-facetime-skype/|dead-url=no}}</ref>与即时通信应用[[Google Allo|Allo]]一同宣布。Duo于8月16日在美国正式推出，并于几天后拓展到全球。<ref>{{Cite web|url=https://googleblog.blogspot.co.uk/2016/08/meet-google-duo-simple-1-to-1-video.html|title=Meet Google Duo, a simple 1-to-1 video calling app for everyone|accessdate=2016-08-16|language=en|archive-date=2016-08-22|archive-url=https://web.archive.org/web/20160822044030/https://googleblog.blogspot.co.uk/2016/08/meet-google-duo-simple-1-to-1-video.html|dead-url=no}}</ref><ref name="Gibbs-16-08-2016" /><ref>{{Cite web|url=http://arstechnica.com/gadgets/2016/08/googles-launches-duo-a-barebones-video-calling-app/|title=Google launches Duo, a barebones video calling app|accessdate=2016-08-16|language=en|archive-date=2019-04-14|archive-url=https://web.archive.org/web/20190414221324/https://arstechnica.com/gadgets/2016/08/googles-launches-duo-a-barebones-video-calling-app/|dead-url=no}}</ref>Duo在推出2天后便爬升至[[Google Play]]免费应用榜单的第一名。<ref>{{Cite web|url=http://www.androidpolice.com/2016/08/18/duo/|title=Google Duo now #1 in Top Free chart, available globally|accessdate=2016-08-20|date=2016-08-19|language=en|website=Android Police|archive-date=2019-04-25|archive-url=https://web.archive.org/web/20190425080858/https://www.androidpolice.com/2016/08/18/duo/|dead-url=no}}</ref>

2022年6月2日，Google宣佈Google Duo將併入[[Google Meet]]。<ref>{{cite news |title=Google将Meet和Duo合并为一个单一的语音和视频通话应用 |url=https://www.cnbeta.com/articles/tech/1276207.htm |accessdate=2022-06-02 |archive-date=2022-07-14 |archive-url=https://web.archive.org/web/20220714124708/https://www.cnbeta.com/articles/tech/1276207.htm |dead-url=no }}</ref>

== 功能 ==
这款应用具有如下功能：<ref name=":0">{{Cite web|url=https://googleblog.blogspot.co.uk/2016/05/allo-duo-apps-messaging-video.html|title=Saying 👋 to Allo and Duo: new apps for smart messaging and video calling|accessdate=2016-05-18|language=en|website=Official Google Blog|archive-date=2016-09-24|archive-url=https://web.archive.org/web/20160924152042/https://googleblog.blogspot.co.uk/2016/05/allo-duo-apps-messaging-video.html|dead-url=no}}</ref>
* [[720p]]高清视频
* 为低速移动网络优化。应用采用优化过的[[WebRTC]]标准，并使用[[QUIC]]协议传输数据。应用还会监视网络质量，并在网络情况不好时降低视频画质。<ref name="Bohn-2016-5-18" />
* “Knock Knock”：[[Android]]独享功能，可在接听来电前显示对方的实时预览，<ref>{{Cite web|url=http://www.androidguys.com/2016/05/18/knock-knock-whos-there-google-duo/|title=Knock knock! Who’s there? Google Duo!|accessdate=2016-06-09|date=2016-05-18|last=Orr|first=Andrew|publisher=|language=en|website=AndroidGuys|archive-date=2016-05-19|archive-url=https://web.archive.org/web/20160519105620/http://www.androidguys.com/2016/05/18/knock-knock-whos-there-google-duo/|dead-url=no}}</ref>Google称这会“使来电更像一种邀请，而不是干扰”<ref>{{Cite web|url=http://www.techradar.com/news/phone-and-communications/mobile-phones/google-s-facetime-beating-duo-is-now-on-android-and-ios-1326644|title=Google's FaceTime-beating Duo is now on Android and iOS|accessdate=2016-08-16|language=en|archive-date=2017-10-29|archive-url=https://web.archive.org/web/20171029013012/http://www.techradar.com/news/phone-and-communications/mobile-phones/google-s-facetime-beating-duo-is-now-on-android-and-ios-1326644|dead-url=no}}</ref>
* 默认的[[端到端加密]]
* [[Google Assistant]]支持
* 使用手机号码，便于用户与通讯录裡的人通话
* 在WiFi和移动网络间自动切换

== 参见 ==
* [[Google Allo]]
* [[Google环聊|Google Hangouts]]
* {{link-en|视频通话服务和品牌列表|List of video telecommunication services and product brands}}

== 参考资料 ==
{{Reflist}}

== 外部链接 ==
* {{Official|https://duo.google.com/}}
{{Google公司}}
[[Category:2016年软件]]
[[Category:已終止開發的Google軟體]]

Google Duo - 版本历史

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