According to UNESCO holds our planet hundreds of millions of hours of audiovisual archives. These archives, however, continuously losing their quality. This makes it very soon impossible to play them back, unless the content is transferred to a modern digital media. The problem lies in particular in the self-destructive power of the recording material due to its chemical composition, and is not restricted to the oldest material; even with material that is not older than twenty years, the quality decay already deployed. According to Richard Wright for the BBC, 40% of the existing material to the current ratio of digital archiving disappeared in 2045. Analog films and videos on the other hand belong to vulnerable heritage is. The careful preservation of digital derivatives is therefore of utmost importance to keep the material available for future generations.