Efficient search of live-coding screencasts from online videos

• Main Authors: YANG, Chengran, THUNG, Ferdian, LO, David
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2022
• Subjects: Classification; Live-coding screencast; Search; Databases and Information Systems
• Online Access: https://ink.library.smu.edu.sg/sis_research/7696; https://ink.library.smu.edu.sg/context/sis_research/article/8699/viewcontent/efficient.pdf
• Institution: Singapore Management University

Programming videos on the Internet are valuable resources for learning programming skills. To find relevant videos, developers typically search online video platforms (e.g., YouTube) with keywords on topics they wish to learn. Developers often look for live-coding screencasts, in which the videos’ authors perform live coding. Yet, not all programming videos are livecoding screencasts. In this work, we develop a tool named PSFinder to identify live-coding screencasts. PSFinder leverages a classifier to identify whether a video frame contains an IDE window. It uses a sampling strategy to pick a number of frames from an input video, runs the classifer on these frames, and then determines whether the video is a live-coding screencast based on frames classified as containing IDE window. In our preliminary experiment, PSFinder can effectively identify livecoding screencasts as it achieves an F1-score of 0.97.