Abstract: A method of decomposing a lecture into events includes: processing a recorded video and segmenting the video into video, chat, audio and audio transcript; processing the video and dividing it into discreet events including lecture, green board text, white board text, and interaction with users; and storing the discreet events as a storyboard that identifies break points in the lecture. The storyboard and events can be used to create a composed lecture.

Abstract: A method of presenting a virtual class in a presentation having a start time, normal speed, and end time includes determining if the presentation is being started after the start time and if so, determining a delay tine; determining if the presentation is to be presented at the normal speed, and if so, presenting the presentation at the normal speed and finishing the presentation at the end time plus the delay time; if the presentation is not to be presented at the normal speed, presenting the presentation at an accelerated speed such that the presentation ends at the end time.