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--- title: 【2021 年度獲獎團隊:Sync Slide - 萬人演講零延遲】用簡報翻轉貧富, Sync Slide 打造知識分享去中心社群 tags: edu, jothon --- # 【2021 年度獲獎團隊:Sync Slide - 萬人演講零延遲】用簡報翻轉貧富, Sync Slide 打造知識分享去中心社群 :::warning 📍 **[回首頁](https://g0v.hackmd.io/@jothon/sch001report)** 📍 **[了解零時小學校 2022 專案孵化競賽](https://sch001.g0v.tw/means/)** ::: ![](https://s3-ap-northeast-1.amazonaws.com/g0v-hackmd-images/uploads/upload_8f7c88c21744e40e11997e378ce075ed.png) :::info **Sync Slide - 萬人演講零延遲 Sync Slide** 「Sync Slide –萬人演講零延遲」建立萬人同步觀看投影畫面的 App,並設計「簡報皮夾」功能,用戶可與其他使用者同步觀看簡報。於現實生活中,能在多人野餐情況下讓大家開起對應頁面之投影片,作清晰講解及分享。網路世界中可搭配 clubhouse 等即時通訊軟體使用,對萬人作即時簡報。此專案以 GPL 3 釋出,希望在完全去商業化之後,成為一能完全有助於平民利益著想的社交類科技產品。 Sync Slide is released in GPL 3. It’s a non-commercial product and want help all givers in the world. People can use it in the real world and in the online environment, for example, clubhouse. The product let people can watch same page of slide in real-time without using something like WebRTC and the speed is faster than HLS. ::: :::success * 提案連結:https://sch001.g0v.tw/dash/prj/4+gQed0ECU05LS0BrV04lQ2lD * 專案網站:https://www.canva.com/design/DAE3xBmEZvM/AO7GLVUdctMJjCf_1qdp-w/view * 專案開源:GPL3 * 開源資料:https://github.com/milochen0418/xlide/ * 團隊成員:Milo Chen(@Milo Chen) ::: 文/林冠廷 城鄉落差、貧富不均在教育現場往往被視為難以處理的大哉問,但這些問題天天都在熱血國中資訊老師 Milo Chen 的心頭縈繞。自認出身背景不優、靠著教育翻轉人生的 Milo,有著要透過最好的數位工具,提供偏鄉學生頂級學習環境的使命。因此當 Milo 發現市面上能串流投影片的服務,都難以同時播放給上百人觀賞時,他對自己下了挑戰:建立一套能讓萬人同步收看簡報,又不會延遲的工具。 ![](https://s3-ap-northeast-1.amazonaws.com/g0v-hackmd-images/uploads/upload_245d0eb90526ecbf40fe45dc969e852d.png) ### 線上、實體通吃,簡報分享無限可能 串流簡報市場中,常見視訊會議軟體多有參與上限,僅能容納幾百人;而 YouTube Live 等直播服務,則有延遲問題,聽眾與講者出現隔閡,降低互動品質。「即時互動也很重要,但 YouTube Live 有可能延遲 20、30 秒,導致參加者互動意願不高。」Milo 指出,專案借用 Clubhouse 等語音服務,可有大量參與者,延遲又降到3秒,足以讓講者、聽眾即時對談,使參與者成為話題討論者。 ![](https://s3-ap-northeast-1.amazonaws.com/g0v-hackmd-images/uploads/upload_715a47f71fd6dc9635c3c22b49e4fd3f.png) 語音服務沒有延遲,但缺乏簡報分享,此時就是 Sync Slide 登場的時機。使用者打開服務,輸入講者提供的簡報編號後,身在何處都能同步檢視簡報畫面。因專案採網頁而非影片串流,降低傳輸量,使簡報與語音同樣即時。這代表,Sync Slide 搭配語音串流,講者與聽者馬上能進行高品質、無延遲的雙向互動。此外,專案也提供「投影片皮夾」,講者在實體場合能即時存取所有簡報,快速建立與聽者的交流機會,讓 Sync Slide 成為適用於線上、線下的少見工具。 ### 放棄高薪轉投教職,身體力行教育理念 「我比較幸運,剛好讀高職發揮自己天份,做到工程師。」Milo 直言,幫助偏鄉孩子跳脫環境不容易,教學資源與團體動力缺一不可。紅極一時的 Gather 服務上架時,可於數位空間建立虛擬形象並遠端互動,讓 Milo 覺得 Gather 足夠提供學生團體感、「離目標很近」。他隨即成立了 Gather 臉書社團,現有超過五千人加入。 成立社團時,Milo 仍擔任串流工程師,但 Gather 社群的茁壯,激發他想做更多事情。「企業老闆是為了錢,不會思考回饋,但我希望真的對社會有助益。」因此,看到一間鶯歌的國中在 Gather 社團徵資訊老師,他毅然轉換跑道,進入偏鄉擔任教職。他認為,擔任老師或是執行 Sync Slide 專案看起來可能不多,「但不要把解決全球貧富差異想得多偉大,否則就沒有人能做事了。」對 Milo 來說,再小的行動,能幫一把就是一把。 ![](https://s3-ap-northeast-1.amazonaws.com/g0v-hackmd-images/uploads/upload_af400f73c2b99face9845b916a5d5ca6.jpg) ### 將簡報分享變成去中心化社群網路 聊起參與零時小學校的經驗,Milo 的眼睛一亮:「開發很好玩!可以實際建置、推廣程式,獲得在企業沒有的機會。」他說,自己過去在建置 Gather 社群時,就參考過 g0v 的新手指南,後來實際走訪大松,被 g0v 參與者推坑報名零時小學校。「評審思考問題都滿厲害,例如有人提醒有些學校頻寬較慢,作遠端教學會影象傳輸不及,是否能使用 Sync Slide 解決這教育現場的痛點。」 ![](https://s3-ap-northeast-1.amazonaws.com/g0v-hackmd-images/uploads/upload_beb102cc61c7b27f78586394933ab26a.png) 承襲 g0v 的開源精神,Milo 選擇非營利模式,以 GPL-3.0 授權釋出 Sync Slide 軟體。在未來,他希望讓使用者「以簡報會友」,講者可以發文與過往聽眾互動,雙方就不需要另加社群帳號。更重要的是,使用者可以選擇將個資儲存在商業伺服器,或是自己架設,尊重隱密與去中心的社群網絡理念,落實專案初衷——幫助弱勢學生的優質數位工具。

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