Klewel provides leading edge solutions for effectively capturing, archiving and searching the information contained in multimedia digital recordings of presentations and conferences. Klewel records the whole information delivered during a presentation without requiring any effort to the speaker and by simply pressing a button. The capture infrastructure is non-intrusive. Knowledge extraction. Klewel distillates automatically the core messages of the speaker from data as raw as audio and video streams thanks to fast indexing technologies developed at IDIAP Research Institute. Knowledge access. Klewel makes the knowledge of the speakers available to anybody through natural language queries as simple as those that everybody uses to find web pages with any web search engine.