Teach Me Fast:

How to Optimize Online Lecture Video Speeding for Learning in Less Time?

2018.04 | ChineseCHI 2018

Online video-based learning is popular among the global student community. We investigate ways of leveraging Artificial Intelligence (AI) to reduce the video watching time without losing comprehension of the video content. Using an in-house designed video player prototype, we conducted an observation study to understand user behavior in adjusting the video playback rate. We present preliminary results from this study and discuss implications of our observations in designing potential AI-based solutions to semi-automatically adjust the video playing speed to reduce the watching time without affecting the users’ comprehension.


speaker’s speech rate, video speed prediction, video speed modelling, online video learning, video player interface, video speed


Proceedings of the Sixth International Symposium of Chinese CHI

Project Info



Devangini Patel, Debjyoti Ghosh, and Shengdong Zhao