“Google Duo”的意思、由来-开放百科全书

Google Duo is a video chat mobile app developed by Google, available on the Android and iOS operating systems. It was announced at Google's developer conference on May 18, 2016, and began its worldwide release on August 16, 2016. It is also available to use via Google's Chrome browser on desktop and laptop computers.

Google Duo lets users make video calls in high definition. It is optimized for low-bandwidth networks. End-to-end encryption is enabled by default. Duo is based on phone numbers, allowing users to call someone from their contact list. The app automatically switches between Wi-Fi and cellular networks. A "Knock Knock" feature lets users see a live preview of the caller before answering. An update in April 2017 lets users worldwide make audio-only calls.

In an email sent to Android phone manufacturers on October 5, 2016, Google announced that, starting December 1, 2016, Google Duo replaced Hangouts within the suite of Google apps Android phone makers must pre-install on devices, with Hangouts instead becoming an optional app for phone makers to pre-install.^[1]

In October 2017, Google Duo was integrated into Google Phone, Contacts, and Messages on the Pixel, Nexus, and Android One phones. This integration will be brought to other Android phones and carriers in the near future.^[2]^[3]

Features

Google Duo video calls are in 720p HD video.^[4] It is optimized for low-bandwidth mobile networks through WebRTC and uses QUIC over UDP. Optimization is further achieved through the degradation of video quality through monitoring network quality.^[5] "Knock Knock" shows a live preview of the caller before the recipient picks up, which Google says is to "make calls feel more like an invitation rather than an interruption".^[6] End-to-end encryption is enabled by default.^[4] Duo is based on phone numbers, allowing users to call people from their contact list.^[4] The app automatically switches between Wi-Fi and cellular networks.^[4]

In March 2017, it was announced that Google Duo would let users make audio-only calls. The feature was first launched in Brazil,^[7]^[8]^[9] with a global rollout in April.^[10]^[11]

A year later in March 2018, video and voice messages were added to Duo. Users can leave messages up to 30 seconds long for contacts who are unavailable. These messages can then be viewed by the other party, with the option of calling afterwards.^[12]

See also

References

1. ^{{cite web |first=David |last=Ruddock |title=Google is demoting Hangouts to "optional" in the Google Apps package for Android, to be replaced by Duo |url=http://www.androidpolice.com/2016/10/07/google-is-demoting-hangouts-to-optional-in-the-google-apps-package-for-android-to-be-replaced-by-duo/ |website=9to5google |date=October 7, 2016 |accessdate=October 20, 2016}}
2. ^{{cite web |first=Ben |last=Schoon |title=Google Duo integration officially rolling out to Pixel, Nexus, will come to other Android phones ‘over time’ |url=https://9to5google.com/2017/10/11/google-duo-integration-pixel-nexus-android/ |website=Android Police |date=October 11, 2017 |accessdate=October 13, 2017}}
3. ^{{cite web |first=Ryne |last=Hager |title=Duo and ViLTE video call integration with Google Phone, Contacts, and Android Messages is rolling out to Google-supported phones |url=http://www.androidpolice.com/2017/10/11/duo-vilte-video-call-integration-google-phone-contacts-android-messages-rolling-google-supported-phones/ |website=Android Police |date=October 11, 2017 |accessdate=October 13, 2017}}
4. ^¹²³{{cite web |first1=Amit |last1=Fulay |first2=Yariv |last2=Adan |title=Saying 👋 to Allo and Duo: new apps for smart messaging and video calling |url=https://blog.google/products/allo/allo-duo-apps-messaging-video/ |website=The Keyword Google Blog |publisher=Google |date=May 18, 2016 |accessdate=January 9, 2017}}
5. ^{{cite web|url=https://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|last=Bohn|first=Dieter|date=May 18, 2016|website=The Verge|publisher=Vox Media|accessdate=October 21, 2016}}
6. ^{{cite web|url=https://blog.google/products/duo/meet-google-duo-simple-1-to-1-video/|title=Meet Google Duo, a simple 1-to-1 video calling app for everyone|last=Uberti|first=Justin|date=August 16, 2016|website=The Keyword Google Blog|publisher=Google|accessdate=January 9, 2017}}
7. ^{{cite web |first=Mario |last=Queiroz |title=Google for Brazil: Building a more inclusive internet for everyone, everywhere |url=https://blog.google/topics/internet-access/google-brazil-building-more-inclusive-internet-everyone-everywhere/ |website=The Keyword Google Blog |publisher=Google |date=March 22, 2017 |accessdate=March 22, 2017}}
8. ^{{cite web |first=Nikki |last=Erlick |title=Google announces app updates to Allo, Duo, and Photos |url=https://www.theverge.com/2017/3/22/15024736/google-allo-duo-photos-updates-announced |website=The Verge |publisher=Vox Media |date=March 22, 2017 |accessdate=March 22, 2017}}
9. ^{{cite web |first=Jordan |last=Palmer |title=Google Duo is finally getting an audio-only call option, rolling out first in Brazil [APK Download] |url=http://www.androidpolice.com/2017/03/22/google-duo-finally-getting-audio-call-option-rolling-first-brazil/ |website=Android Police |date=March 22, 2017 |accessdate=March 23, 2017}}
10. ^{{cite web |first=James |last=Vincent |title=Google Duo's voice calls are now available worldwide |url=https://www.theverge.com/2017/4/10/15242416/voice-calling-google-duo-worldwide |website=The Verge |publisher=Vox Media |date=April 10, 2017 |accessdate=April 10, 2017}}
11. ^{{cite web |first=Vallentina |last=Palladino |title=Google Duo’s audio call feature is now available for all users worldwide |url=https://arstechnica.com/business/2017/04/google-duos-audio-call-feature-is-now-available-for-all-users-worldwide/ |website=Ars Technica |publisher=Condé Nast |date=April 10, 2017 |accessdate=April 10, 2017}}
12. ^{{cite web|last1=Lindsay|first1=Dave|title=Miss a call—but not the moment—with video messages on Google Duo|url=https://blog.google/products/duo/miss-call-not-moment-video-messages-google-duo/|website=The Keyword Google Blog|accessdate=March 15, 2018|date=March 7, 2018}}

Features

See also

References

External links