Video lectures and slidecasts
Video lectures (in the Netherlands called "web lectures") are complete video registrations of lectures put on the internet. You can view them at any given moment. Slidecasts are also on the internet, but they are a more simple combination of podcasts and PowerPoint presentations.
Benefits for students
The big advantage of (streaming) video lectures is that you can attend class online at a later date. On-campus or from home. Video lectures can help you to improve your academic performance. They are useful in preparing for an exam or when you missed class.