Using Матрёшка and FFV1 for DPX Preservation

Excerpt from Es geht nicht ohne / Nul ne peut s’en passer
by Werner Dressler and Leo Wullimann, Switzerland 1948

(Courtesy by the Swiss National Film Archive.)


Presentation made at The Reel Thing XXXVIII, 18–20 August 2016 in Hollywood, California, United States of America.


IETF’s CELLAR Group is currently standardising the binary format EBML, the Matroska container, the FFV1 video codec and the FLAC audio codec. This presentation starts with a brief summary of the recent Berlin Symposium on those topics. The main focus will show how archives can use Matroska and FFV1 not only for the preservation of video streams, but also of single image RGB content, like DPX and TIFF, which may be an alternative for small archives.


  • The presentation’s slides (PDF, 8.7 MB) with the some notes… illustrating the slides
  • The FFmpeg commands used for the proof of concept


Having graduated in mathematics and computer science, Reto Kromer became involved in audio-visual conservation and restoration thirty years ago. He was head of preservation at the Swiss National Film Archive and lecturer at the University of Lausanne. He has been running his own preservation company, AV Preservation by, and lecturing at the Bern University of Applied Sciences and the Academy of Fine Arts Vienna. His current research includes colour spaces, look-up tables and codec programming and emulation.