New Advances in DNx Family of Codecs and SMPTE VC-3

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Publisher: SMPTE
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: SMPTE Motion Imaging Jour.
Volume: 134, No. 4, pp. 33–45
Abstract: The industry's need for better quality and bitrate flexibility, cost-efficient workflows, and performance optimization on common off-the-shelf (COTS) platforms has driven recent innovations in the DNx family of codecs that are based on the SMPTE VC-3 standards and RDD5O documents. Notably, the VC-3 codec has been standardized in the Interoperable Master Format (IMF) as SMPTE ST 2067-70:2024, offering broadcasters a cost-effective, standardized mezzanine codec that meets the DPP delivery specifications. The DNx family of codecs now supports tunable bitrates encoding to meet storage and network constraints while remaining compatible with existing specifications and decoders. Additionally, a new rate control approach enhances visual quality for low-bitrate proxies, and a collaboration between Avid and Intel has led to significant performance improvements on Intel processors. This collaboration with Intel has resulted in new efforts to update the SMPTE ST 2019 standard to include these advancements.
Publication Date: 2025-07-01
DOI: 10.5594/JMI.2025/LGJX4897
ISSN: Print: 1545-0279 | Electronic: 2160-2492
Link: https://doi.org/10.5594/JMI.2025/LGJX4897
Author(s): Markus Weber
Shailendra Mathur
Narifumi Iwamoto
Seung-Woo Kim
Keyword(s): DNxHD, DNxHR, DNxGX, VC-3, St 2067-70:2024, IMF, Mezzanine, Tunable Bitrate, RDO
Copyright: © 2025 SMPTE

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Markus Weber, Shailendra Mathur, Narifumi Iwamoto, and Seung-Woo Kim; New Advances in DNx Family of Codecs and SMPTE VC-3, MIJ 2025, Volume 134, Number 4 (pp. 33 to 45); SMPTE, 2025. Available at https://doi.org/10.5594/JMI.2025/LGJX4897

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Markus Weber, Shailendra Mathur, Narifumi Iwamoto, and Seung-Woo Kim; New Advances in DNx Family of Codecs and SMPTE VC-3, MIJ 2025, Volume 134, Number 4 (pp. 33 to 45); SMPTE, 2025. Available at https://doi.org/10.5594/JMI.2025/LGJX4897

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<span class="citation">Markus Weber, Shailendra Mathur, Narifumi Iwamoto, and Seung-Woo Kim; <cite>New Advances in DNx Family of Codecs and SMPTE VC-3</cite>, MIJ 2025, Volume 134, Number 4 (pp. 33 to 45); SMPTE, 2025. Available at <a href="https://doi.org/10.5594/JMI.2025/LGJX4897" target="_blank" rel="noopener">https://doi.org/10.5594/JMI.2025/LGJX4897</a></span>

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Markus Weber, Shailendra Mathur, Narifumi Iwamoto, and Seung-Woo Kim; New Advances in DNx Family of Codecs and SMPTE VC-3, MIJ 2025, Volume 134, Number 4 (pp. 33 to 45); SMPTE, 2025
doi: 10.5594/JMI.2025/LGJX4897
url: https://doi.org/10.5594/JMI.2025/LGJX4897

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Markus Weber, Shailendra Mathur, Narifumi Iwamoto, and Seung-Woo Kim; <cite id="bib-10-5594-jmi-2025-lgjx4897">New Advances in DNx Family of Codecs and SMPTE VC-3</cite>, MIJ 2025, Volume 134, Number 4 (pp. 33 to 45); SMPTE, 2025
<span class="doi">10.5594/JMI.2025/LGJX4897</span>
</li>