1. Digital media and formats

First, let's define a few terms used in the digital media field:

• media data, resulting from the digitization of source media (audio, still images, video, text, which are perceived and consumed by the user), represent their "essence" (as in "essential"), a term introduced by an EBU-SMPTE working group , the European Broadcasting Union and the Society of Television and Film Engineers. This data can be that of a piece of music, a...