Accessible Requires Authentication Published by De Gruyter May 30, 2015

Building an audio/video-feedback system for simulation training in medical education

Moritz Mahling, Alexander Münch, Christoph Castan, Paul Schubert, Leopold Haffner, Jan Griewatz, Andreas Manger, Nora Celebi, Reimer Riessen, Verena Conrad, Anne Herrmann-Werner and Jörg Reutershan
An erratum for this article can be found here:


Background: Simulation training in medical education is a valuable tool for skill acquisition. Standard audio/video-feedback systems for training surveillance and subsequent video feedback are expensive and often not available.

Methods: We investigated solutions for a low-budget audio/video-feedback system based on consumer hardware and open source software.

Results: Our results indicate that inexpensive, movable network cameras are suitable for high-quality video transmission including bidirectional audio transmission and an integrated streaming platform. In combination with a laptop, a WLAN connection, and the open source software iSpyServer, one or more cameras represent the easiest, yet fully functional audio/video-feedback system. For streaming purposes, the open source software VLC media player yields a comprehensive functionality. Using the powerful VideoLAN Media Manager, it is possible to generate a split-screen video comprising different video and audio streams. Optionally, this system can be augmented by analog audio hardware. In this paper, we present how these different modules can be set up and combined to provide an audio/video-feedback system for a simulation ambulance.

Conclusions: We conclude that open source software and consumer hardware offer the opportunity to build a low-budget, feature-rich and high-quality audio/video-feedback system that can be used in realistic medical simulations.

Corresponding author: Christoph Castan, Medical School, Faculty of Medicine, University of Tübingen, 72076 Tübingen, Germany, E-mail:
aMoritz Mahling and Alexander Münch contributed equally to this work.


We thank all members of the student group for emergency medicine, Vaya Dimoulatou, the DocLab team, and the physicians of the Department of Anesthesiology and Intensive Care Medicine in Tübingen for their valuable support.

  1. Author contributions: All the authors have accepted responsibility for the entire content of the submitted manuscript and approved submission.

  2. Research funding: Financial support for this project came from the “PROFIL” program of the Faculty of Medicine and from the Department of Anesthesiology and Intensive Care Medicine, University of Tübingen.

  3. Employment or leadership: None declared.

  4. Honorarium: None declared.

  5. Competing interests: The funding organization(s) played no role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the report for publication.


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Supplemental Material

The online version of this article (DOI: 10.1515/bams-2015-0010) offers supplementary material, available to authorized users.

Received: 2015-3-30
Accepted: 2015-5-4
Published Online: 2015-5-30
Published in Print: 2015-6-15

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