將線上同步教學過程完整錄製下來，可以讓學習者隨時隨地進行複習或補課，對於線上學習而言是非常重要的功能之一。因此如何有效錄製與數位化保存各種型態之線上同步教學是一個非常值得探討的議題。本研究區別出教材講解、實例示範以及教學互動等三種主要的線上同步教學錄製需求情境，並且從這些情境中萃取出重要的錄製功能做為問卷題項。經過統計分析後，這些線上 同步教學錄製功能被分類為基本錄製、進階錄製、互動功能與瀏覽功能等四個主要構面，並且更進一步探討教學需求與錄製構面之間的關係。本研究結果有助於教學者選擇合適的線上同步教學錄製工具，以獲得較好的錄製效果，進而提升線上學習品質。

Because online learning has become an inevitable trend, instructional recording is an important issue for such learning environment. Three modes of online synchronous instructions including lecture, demonstration, and interaction which are the major instruction activities needed to be recorded in online synchronous learning settings. It is important that what kind of functions would be needed to the recording tools for producing efficient and suitable instruction recordings. Four major constructs, including basic recording, advanced recording, interaction, and browsing functions, were concluded from data analysis. Furthermore, the relationship between instructional requirements and recording constructs was explored. This study can help instructors select suitable online synchronous recording tools, then get better recording outcome, and finally improve the instructional quality for online learning.