Want to quickly produce professional online course videos? The VGB-2000 System is an innovative revolution from the traditional lecture style of using blackboard. The presenter can write texts and mark the notes with the IE-Pen. The system well integrates the broadcast-level of video shooting, recording, chromakeying and streaming into a set of the studio, providing a high-quality total solution for producing corporate and educational lecture videos. The easy to use and stable system enable pres