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

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: SMPTE Mot. Imag. J
Volume: 132, No. 5, pp. 38–45
Abstract: International standards for video and audio transmission, such as SMPTE ST 2110, have become widespread in Internet Protocol (IP)-based production systems. However, device control still depends on the manufacturerx2019;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 manufacturerx2019;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 the Advanced Media Workflow Association (AMWA) network media open specifications (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: audio channel mapping. 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 multivendor IP production system.
Publication Date: 2023-06-01
DOI: 10.5594/JMI.2023.3265122
ISSN: Print: 1545-0279 | Electronic: 2160-2492
Link: https://doi.org/10.5594/JMI.2023.3265122
Author(s): Hirohiko Kuramata
bio
Hirohiko Kuramata is an engineer at the System Solution Center, Engineering Administration Department, Japan Broadcasting Corporation (NHK), Tokyo, Japan. He oversees the development and installation planning of the audio production system and equipment.
Mitsuo Okano
bio
Mitsuo Okano is a chief of the System Solution Center, Engineering Administration Department at NHK. He is the manager of the development and installation planning of the audio production system and equipment.
Hikaru Obata
bio
Hikaru Obata is an audio engineer, mixer at the Technical Operations Engineering Division in the Broadcast Engineering Department at NHK. She was formerly an engineer at the System Solution Center, Engineering Administration Department.
Keyword(s): Device Control, IP Production, Open-source Protocol
Copyright: © 2023 SMPTE

Bibliographic Reference(s)

OpenSoundControl.org. Accessed: Aug. 2022. [Online]. Available: https://opensoundcontrol.stanford.edu/ EXTERNAL
Advanced Media Workflow Association (AMWA), “Networked Media Open Specifications (NMOS).” Accessed: Aug. 2022. [Online]. Available: https://specs.amwa.tv/nmos/ EXTERNAL
“Ember + Control Protocol.” Accessed: Aug. 2022. [Online]. Available: https://github.com/Lawo/ember-plus EXTERNAL
Audio Engineering Society (AES) “AES70-1-2018: AES Standard for Audio Applications of Networks—Open Control Architecture Part 1: Framework.” 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 Motion Imaging Journal ( Volume: 132, Issue: 5, June 2023); SMPTE, 2023. Available at https://doi.org/10.5594/JMI.2023.3265122

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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 Motion Imaging Journal ( Volume: 132, Issue: 5, June 2023); SMPTE, 2023. Available at https://doi.org/10.5594/JMI.2023.3265122

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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 Motion Imaging Journal ( Volume: 132, Issue: 5, June 2023); SMPTE, 2023. Available at <a href="https://doi.org/10.5594/JMI.2023.3265122" target="_blank" rel="noopener">https://doi.org/10.5594/JMI.2023.3265122</a></span>

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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 Motion Imaging Journal ( Volume: 132, Issue: 5, June 2023); SMPTE, 2023
doi: 10.5594/JMI.2023.3265122
url: https://doi.org/10.5594/JMI.2023.3265122

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<li>
Hirohiko Kuramata, Mitsuo Okano, and Hikaru Obata; <cite id="bib-10-5594-jmi-2023-3265122">Possible Solutions for the Vendor Lock-In Control Protocol in IP-Based Production Systems</cite>, SMPTE Motion Imaging Journal ( Volume: 132, Issue: 5, June 2023); SMPTE, 2023
<span class="doi">10.5594/JMI.2023.3265122</span>
</li>