It’s a technical and necessary listening for all who works with audio and video.
Xiph.Org Video Presentations: A Digital Media Primer for Geeks.
The program offers a brief history of digital media, a quick summary of the sampling theorem, and myriad details of low level audio and video characterization and formatting. It’s intended for budding geeks looking to get into video coding, as well as the technically curious who want to know more about the media they wrangle for work or play.