While digital file-based AV production workflows have remedied most of their teething problems over the last decade, most audiovisual collections can be seen as an accumulation of flawed, profoundly inconsistent format variations happened over this premature transition to file-based AV production.
Most archivists have no idea about the extent of format variations preserved in their holdings as these cannot be detected with simple analysis tools. All they notice is randomly inconsistent behavior particular media files show in their test and playback systems.
In addition, there is the deceptive expectation that media files which seem to play fine at the time of preserving will also be accessible in the future.
In the last two years, the author and his software development team has worked in the European research project ‘DAVID – Digital AV Media Damage Prevention and Repair’ on methods to analyze, to understand and to develop repair strategies for these extremely diverse error constellations detected in AV collections.
The presentation will give an insight how AV format infringements can be automatically corrected on a media container and on a bit-stream level without re-encoding in a lossless procedure which is scalable to large-scale factory workflows.
Jörg Houpert studied electrical engineering at the University of Bremen (Germany) with a focus on digital signal processing and psycho-acoustics. In 2005, he established ‘Cube-Tec International’. As Head of Technology at Cube-Tec his interest is to pioneer new technologies for the safeguarding of the worldwide audiovisual cultural heritage and to create optimized solutions for the management of large-scale media workflows. Moreover, he holds a few patents in the field of digital signal processing and archiving. Houpert is a member of SMPTE and is involved in the SMPTE standards community.
In addition Houpert is an active participant in various industry and standardization initiatives like the Joint Task Force FIMS on the harmonization of interoperable media services and the EBU Strategic Programme on Quality Control. Houpert is a member of IASA Technical Committee and the FIAT/IFTA Preservation and Migration Committee.