{
  "$schema": "/api/schemas/documents.schema.json",
  "apiVersion": "1.1.0",
  "lastModified": "2026-10-07T20:50:36.681Z",
  "sourcePath": "src/main/data/docs",
  "docId": "10.5594-JMI.2022.3167782",
  "document": {
    "abbrevTitle": "SMPTE Mot. Imag. J",
    "abbrevTitle$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "abstract": "This article discusses some key elements and solutions for efficient video compression. More precisely, we introduce key differentiating techniques for video signal quantization within modern hybrid video codecs. First, we recall the fundamentals of scalar quantization and rate-distortion (R-D) theory and then describe the different control points and levels of granularity for optimizing signal quantization in modern video compression standards. From this common knowledge, we discuss approaches in how to jointly optimize those various levels of quantization refinements for improved video encoding quality. Most notably, we explain how to take advantage of a look-ahead module (available in most industrial encoder implementations) to model spatio-temporal coding dependencies, and how to further compute optimal quantization information from an R-D standpoint for a group of pictures (GOPs). Complementary to this first approach, we share some insights about a local quantization refinement (LQR) algorithm. Such an algorithm is often ignored in practical encoder implementation due to its apparent complexity; we develop how and why it can efficiently work in realtime software encoding.",
    "abstract$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "authors": [
      {
        "bio": "Michaël Ropert is currently responsible for innovation activities for video delivery solutions at MediaKind,Cesson-Sévigné, France. He led the Advanced Video Team, Ericsson (formerly Envivio), France, until 2019. His research interests are signal and image processing. He earned a PhD degree from the University of Rennes 1, Rennes, France, in 1995. From 1991 to 1992, he was a teacher in applied mathematics. While at Orange Labs, Cesson-Sévigné, he worked in the areas of the image and video compression for multimedia and digital television, from 1996 to 1999. He was at Envivio since its inception and led the Video Team for several years from 2000 to 2015.",
        "name": "Michaël Ropert"
      },
      {
        "bio": "Julien Le Tanou is a principal engineer in video technology at MediaKind, Cesson-Sévigné, France, formerly Ericsson Media Solutions. In this role, he is responsible for leading research, innovation, and software development in video processing, compression, and associated encoding technologies. Since 2012, he has been with Envivio, France, in charge of research and algorithms design for Envivio’s SW video encoding solutions. Before Envivio, he was with Orange Labs, Cesson-Sévigné, and Dolby Laboratories, Burbank, CA, where he conducted research and development for the next generation of video coding standards. He received an MS degree in signal and image processing from Telecom Paris, Palaiseau, France, in 2010, and an MSc degree in computer and electrical engineering from Institut Superieure d’Electronique de Paris, Paris, France, in 2008.",
        "name": "Julien Le Tanou"
      },
      {
        "bio": "Mederic Blestel is a principal video compression engineer with MediaKind, Cesson-Sévigné, France. He joined the Envivio Compression Team, Rennes, France, in 2011. As an experienced leader, his research interests focus on various aspects of image and video processing research. He has been heavily involved in various encoding projects and now mainly focuses on new technical trends in the video compression area. Before joining MediaKind, he contributed to Joint Photographic Experts Group (JPEG) and MPEG standardization within the Institute of Electronics and Telecommunications of Rennes (IETR) Laboratory, Rennes. He received an MSc degree from the Institut National des Sciences Appliquées Rennes (INSA Rennes), Rennes, in 2006.",
        "name": "Mederic Blestel"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "contentType": "orig-research",
    "contentType$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "copyright": {
      "holder": "SMPTE",
      "holder$meta": {
        "confidence": "high",
        "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
        "source": "parsed",
        "updated": "2026-10-07T17:09:33.718Z",
        "version": "smpte-idams-publication@v1"
      },
      "year": "2022",
      "year$meta": {
        "confidence": "high",
        "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
        "source": "parsed",
        "updated": "2026-10-07T17:09:33.718Z",
        "version": "smpte-idams-publication@v1"
      }
    },
    "copyright$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "docId": "10.5594-JMI.2022.3167782",
    "docId$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "docLabel": "SMPTE Motion Imaging Journal ( Volume: 131, Issue: 5, June 2022)",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "docTitle": "Mastering Quantization is Key for Video Compression",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "docType": "Journal Article",
    "docType$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "doi": "10.5594/JMI.2022.3167782",
    "doi$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "href": "https://doi.org/10.5594/JMI.2022.3167782",
    "href$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "issn": {
      "electronic": "2160-2492",
      "electronic$meta": {
        "confidence": "high",
        "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
        "source": "parsed",
        "updated": "2026-10-07T17:09:33.718Z",
        "version": "smpte-idams-publication@v1"
      },
      "print": "1545-0279",
      "print$meta": {
        "confidence": "high",
        "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
        "source": "parsed",
        "updated": "2026-10-07T17:09:33.718Z",
        "version": "smpte-idams-publication@v1"
      }
    },
    "issn$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "journalAcronym": "MIJR",
    "journalAcronym$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "journalTitle": "SMPTE Motion Imaging Journal",
    "journalTitle$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "keywords": [
      "Hybrid Encoder",
      "Quantization",
      "Video Compression"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "number": "5",
    "number$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "pages": "45–53",
    "pages$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "publicationDate": "2022-06-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "publisher": "SMPTE",
    "publisher$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "publisherLocation": {
      "city": "White Plains, NY",
      "city$meta": {
        "confidence": "high",
        "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
        "source": "parsed",
        "updated": "2026-10-07T17:09:33.718Z",
        "version": "smpte-idams-publication@v1"
      },
      "country": "USA",
      "country$meta": {
        "confidence": "high",
        "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
        "source": "parsed",
        "updated": "2026-10-07T17:09:33.718Z",
        "version": "smpte-idams-publication@v1"
      }
    },
    "publisherLocation$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    },
    "references": {
      "bibliographic": [
        "orphan/10.5594-JMI.2022.3167782/h:04836464",
        "T-REC-H.264.2003",
        "T-REC-H.264.2013",
        "T-REC-H.264.2020",
        "RFC6386",
        "orphan/10.5594-JMI.2022.3167782/h:ab251569",
        "orphan/10.5594-JMI.2022.3167782/h:f351ae3c",
        "orphan/10.5594-JMI.2022.3167782/h:d9d8f255",
        "orphan/10.5594-JMI.2022.3167782/h:65518546",
        "orphan/10.5594-JMI.2022.3167782/h:704614c6",
        "orphan/10.5594-JMI.2022.3167782/h:ceb7f1a4",
        "orphan/10.5594-JMI.2022.3167782/h:eb6e99e2",
        "orphan/10.5594-JMI.2022.3167782/h:2adfefd0",
        "orphan/10.5594-JMI.2022.3167782/h:ca5bdfd7",
        "orphan/10.5594-JMI.2022.3167782/h:aeaef669",
        "T-REC-Q.6",
        "orphan/10.5594-JMI.2022.3167782/h:a0ac3a33",
        "orphan/10.5594-JMI.2022.3167782/h:386897d0",
        "orphan/10.5594-JMI.2022.3167782/h:2065823e",
        "orphan/10.5594-JMI.2022.3167782/h:27b75e48",
        "orphan/10.5594-JMI.2022.3167782/h:07905ff6",
        "orphan/10.5594-JMI.2022.3167782/h:3b9752b4",
        "T-REC-P.910"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "note": "References parsed from the published PDF (Journal Article Repository/2022/7261654/9789510/09789467.pdf). SMPTE's library delivery has no reference file or full text for this paper (src/main/reports/smpte-upstream/referenceFilesTruthTable.md). Cross-check: Crossref lists 23 reference(s) for this DOI; 23 parsed from the PDF.",
        "originalValue": [],
        "overridden": true,
        "source": "parsed",
        "updated": "2026-10-07T20:50:36.681Z",
        "version": "extractDocs.js@commit:d25f34130540"
      }
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
        "source": "parsed",
        "updated": "2026-10-07T17:09:33.718Z",
        "version": "smpte-idams-publication@v1"
      }
    },
    "volume": "131",
    "volume$meta": {
      "confidence": "high",
      "note": "Ingested from SMPTE IDAMS <publication> (_source/SMPTE/Journal Article Repository/2022/7261654/9789510/09789467.xml) via idamsIngest.js",
      "source": "parsed",
      "updated": "2026-10-07T17:09:33.718Z",
      "version": "smpte-idams-publication@v1"
    }
  }
}