AV Preservation by reto.ch

If it’s not awesome, we don’t do it.


Création de la Serpentine

A stencil-coloured print of
Création de la Serpentine by Segundo de Chomón,
Pathé Frères, France 1908
(Courtesy by Österreichisches Filmmuseum, the Austrian Film Museum)


We are a small, highly skilled moving image conservation and restoration facility based in Switzerland. Our team provides worldwide comprehensive services that encompass the whole range of audio-visual preservation, and offers you Swiss quality at a competitive price. We have a particular commitment to the dissemination of audio-visual conservation and restoration techniques. We are actively engaged in a number of relevant national and international professional bodies. We support open source projects which we believe are beneficial for the archival community. We are running the Swiss Film and Video Directory.

Our Services Include

  • film digitisation for both preservation and access purposes
  • moving image restoration
  • audio-visual files and data transformation
  • data migration with file format maintenance
  • digital archiving service
  • consultancy, training and research on audio-visual preservation issues



  • FFmpeg for audio-visual archivists, a half-day workshop lead twice by Joshua Ng and Reto Kromer at the IASA 50th Annual Conference in Hilversum, Netherlands, on 30 September – 3 October 2019 [en]
  • The RAWcooked Project, by Jérôme Martinez and Reto Kromer at the FIAT/IFTA World Conference in Dubrovnik, Croatia, on 22–25 October 2019 [en]
  • Open-Source Tools and Resources at Tate in London, United Kingdom, on 30–31 October 2019 [en]
  • two-day workshop lead by Ken Weissman and Reto Kromer, in Tirana, Albania, on 7–8 November 2019 [en]
  • Physical conservation treatments for digitizing film: re-plasticization, by Diana Little, Greg Wilsbacher, Reto Kromer and Tommy Aschenbach at the AMIA Conference in Baltimore, Maryland, United States of America, on 13–16 November 2019 [en]
  • From the sensor to the file at «Initializing Initiatives» (= «No Time to Wait 4») on 4–6 December 2019 at the Vera and Donald Blinken Open Society Archives in Budapest, Hungary [en]
  • Medienkunst: Technologie und Erhaltungsstrategien III at the Akademie der bildenden Künste Wien on 7–10 January 2020 in Vienna, Austria [de]
  • FFmpeg fürs Archiv, one-day Memoriav workshop lead by Sophie Bunz and Reto Kromer, in Bern, probably on 13 or 20 January 2020 [de]
  • FFmpeg pour l’archive, one-day Memoriav workshop lead by Émilie Magnin and Reto Kromer, possibly on 15 or 22 January 2020 [fr]

Patronage of the Arts and the Sciences

  • AMIA, the Association of Moving Image Archivists
  • FIAF, the International Federation of Film Archives
  • IASA, the International Association of Sound and Audiovisual Archives
  • SEAPAVAA, the SouthEast Asia-Pacific AudioVisual Archive Association
  • «Radicals» (= «Orphan Film Symposium») on 6–8 June 2019 at Österreichisches Fimmuseum in Vienna, Austria
  • «Initializing Initiatives» (= «No Time to Wait 4») on 4–6 December 2019 at the Vera and Donald Blinken Open Society Archives in Budapest, Hungary