Overview
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ABSTRACT
The use of high-definition for television has required certain functional and technical adaptations. This article reviews the compression formats required in order to capture, transport, store, transmit and receive high-definition images (HD) for television. The issue of the encapsulation of HD images into container-formats in order to hold data-files is also dealt with.
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Read the articleAUTHORS
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Jean-Noël GOUYET: Training engineer in digital television and multimedia techniques and systems - Former Research Director, Institut national de l'audiovisuel (Ina)
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Francis MAHIEU: Trainer in digital video techniques at Ina SUP
INTRODUCTION
High-definition (HD) images are now available on television: HDTV (high-definition television). Initiated in analog form in the mid-1980s by the Japanese, then by the Europeans, HDTV was temporarily abandoned and only really revived with the digital television project in the United States. This process led to international standards in the mid-1990s.
This dossier not only updates the
the first part concerns formats. The 1 er document
describes the native parameters of images produced by HDTV and the corresponding standards. This document [TE 5 681] details the compression formats used to reduce the bit rate of HD digital video, making it possible to capture, transport, store, transmit and receive HD images in the world of television. It also presents the problem of encapsulating HD images in data file container or transport formats;[TE 5 680] Part 2, consisting of three documents, will explain the main functions of capturing/recording, editing
, broadcasting and distribution[TE 5 682] , displaying and evaluating the quality of HD images[TE 5 683] , "from glass to glass", from the glass of the camera lens to the glass of the flat screen;[TE 5 684] Part 3 will highlight an important component of HDTV: multichannel sound
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High-definition television (HDTV)
Bibliography
- (1) - AAF - AAF An industry-driven open standard for multimedia authoring. - http://www.media-matters.net/docs/resources/Wrapper-Container%20File%20Formats/AAF/aaf_dev_overview%5B1%5D.pdf...
Standards and norms
- AAF – MXF Subtitling http://www.aafassociation.org/html/techinfo/index.html#AAF-MXF%20Subtitling - AAF -
- Low-Level Container Specification v1.0.1 http://www.aafassociation.org/html/specs/aafcontainerspec-v1.0.1.pdf - AAF - 02-04
- Object Specification v1.1. http://www.aafassociation.org/html/specs/aafobjectspec-v1.1.pdf - AAF - 04-05
- Stored Format Specification v1.0.1 http://www.aafassociation.org/html/specs/aafstoredformatspec-v1.0.1.pdf...
Directory
Organizations – Federations – Associations (non-exhaustive list)
AAF (Advanced Authoring Format) Association – now AMWA http://www.aafassociation.org/html/faq.html
AMWA (Advanced Media Workflow Association) http://www.aafassociation.org/
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