A screencast is a digital recording of computer screen activity, often including audio narration and sometimes webcam video. It allows for creating instructional videos that can enrich online learning materials. While screencasts provide an accessible way to create multimedia content, they require preparation, technical skills, and time to produce quality recordings. Effective screencasts are short, focused on key points, and make use of editing to support the narration. Proper audio, lighting, and environment are important for a professional finished product.