Possible Solutions for the Vendor Lock-in Control Protocol in IP-based Production Systems

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Conference Paper
Content Type: Original Research
Volume: 2022, No. 10, pp. 1–12
Abstract: International standards for video and audio transmission, such as the SMPTE ST 2110, have become widespread in Internet Protocol (IP)-based production systems. However, device control still depends on the manufacturer's original protocols, resulting in the vendor lock-in problem. Herein, we have attempted to solve this problem. We prototyped a control device for an audio input/output (I/O) unit. Generally, the parameters of an audio I/O unit, such as the preamplifier gain and phantom power, are controlled using the audio mixing console with the manufacturer's original protocol. Therefore, if various audio I/O units from different manufacturers are available at the venues, controlling them is difficult in a control room. Using the vendor-free and open-source protocol, “Ember+” enables us to build a flexible system without the constraints presented by the manufacturer's original protocols. Additionally, we investigated the control of the connection of audio devices and audio channel mapping according to the specifications of AMWA NMOS IS-04, 05, and 08. Although IS-08 is stable with the potential to become widespread, it has not been adopted in many products. We implemented an application software to control the connection of audio devices and evaluated the efficiency of NMOS, especially IS-08. We confirmed that the application could effectively control the channel mapping like an audio router and could be adopted for any control system. Thus, our prototype and investigation present practical solutions using Ember+ and NMOS IS-08 to control devices on a multi-vendor IP production system.
Publication Date: 2022-10-24
DOI: 10.5594/M001983
ISBN: Print: 978-1-61482-963-8
Link: https://doi.org/10.5594/M001983
Author(s): Hirohiko KuramataJapan Broadcasting Corporation (NHK)
Mitsuo OkanoJapan Broadcasting Corporation (NHK)
Hikaru ObataJapan Broadcasting Corporation (NHK)
Keyword(s): IP Production, Device Control, Open-source Protocol
Copyright: © 2022 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

AES70-1.2018 — AES70-1-2018: AES standard for audio applications of networks - Open Control Architecture Part 1: Framework EXTERNAL
Advanced Media Workflow Association(AMWA), Networked Media Open Specifications(NMOS) (https://specs.amwa.tv/nmos/) EXTERNAL
Ember+ control protocol (https://github.com/Lawo/ember-plus) EXTERNAL
OpenSoundControl.org (https://opensoundcontrol.stanford.edu/) EXTERNAL

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Hirohiko Kuramata, Mitsuo Okano, and Hikaru Obata; Possible Solutions for the Vendor Lock-in Control Protocol in IP-based Production Systems, SMPTE Meetings and Conferences ( October 2022); SMPTE, 2022, ISBN: 978-1-61482-963-8. Available at https://doi.org/10.5594/M001983

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Hirohiko Kuramata, Mitsuo Okano, and Hikaru Obata; Possible Solutions for the Vendor Lock-in Control Protocol in IP-based Production Systems, SMPTE Meetings and Conferences ( October 2022); SMPTE, 2022, ISBN: 978-1-61482-963-8. Available at https://doi.org/10.5594/M001983

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<span class="citation">Hirohiko Kuramata, Mitsuo Okano, and Hikaru Obata; <cite>Possible Solutions for the Vendor Lock-in Control Protocol in IP-based Production Systems</cite>, SMPTE Meetings and Conferences ( October 2022); SMPTE, 2022, ISBN: 978-1-61482-963-8. Available at <a href="https://doi.org/10.5594/M001983" target="_blank" rel="noopener">https://doi.org/10.5594/M001983</a></span>

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<li>
Hirohiko Kuramata, Mitsuo Okano, and Hikaru Obata; <cite id="bib-10-5594-m001983">Possible Solutions for the Vendor Lock-in Control Protocol in IP-based Production Systems</cite>, SMPTE Meetings and Conferences ( October 2022); SMPTE, 2022, ISBN: 978-1-61482-963-8
<span class="doi">10.5594/M001983</span>
</li>