H.262

H.262
Name	H.262
Alias	MPEG-2 Video
Developer	International Telecommunication Union (ITU), International Organization for Standardization (ISO), and International Electrotechnical Commission (IEC)
Released	1994

H.262. H.262, also known as MPEG-2 Video, is a video compression standard developed by the International Telecommunication Union (ITU), International Organization for Standardization (ISO), and International Electrotechnical Commission (IEC) in collaboration with the Moving Picture Experts Group (MPEG). This standard was designed to provide high-quality video transmission and storage, and it has been widely used in various applications, including Digital Video Broadcasting (DVB), Advanced Television Systems Committee (ATSC), and DVD (Digital Versatile Disc) formats, which were developed by companies like Sony, Philips, and Toshiba. The development of H.262 involved the contributions of many experts from organizations such as Bell Labs, IBM, and Microsoft.

Introduction

H.262 is a video compression standard that uses a combination of Discrete Cosine Transform (DCT) and Quantization to reduce the amount of data required to represent a video signal. This standard is widely used in various applications, including Television Broadcasting (TVB), Cable Television (CATV), and Satellite Broadcasting (SB), which are regulated by organizations like the Federal Communications Commission (FCC) in the United States and the European Broadcasting Union (EBU) in Europe. The H.262 standard is also used in the production of Blu-ray Disc (BD) and HD DVD (High-Definition Digital Versatile Disc) formats, which were developed by companies like Samsung, LG, and Panasonic. The standard has undergone several revisions, with the most recent version being H.262:2004, which was published by the International Telecommunication Union (ITU) in collaboration with the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC).

History

The development of H.262 began in the late 1980s, when the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC) formed the Moving Picture Experts Group (MPEG) to develop a standard for video compression. The first version of the H.262 standard was published in 1994, and it was designed to provide high-quality video transmission and storage for applications such as Digital Television (DTV) and Video on Demand (VOD), which were developed by companies like Cisco Systems, Ericsson, and Alcatel-Lucent. The standard was later revised and updated to include new features and improvements, such as the addition of Error Correction and Error Concealment mechanisms, which were developed by researchers at Stanford University, Massachusetts Institute of Technology (MIT), and University of California, Berkeley (UC Berkeley). The H.262 standard has been widely adopted by the Broadcasting Industry (BI), including companies like BBC, CNN, and NHK, and it has played a key role in the development of modern Digital Media (DM) formats, such as MPEG-4 and H.264.

Technical Overview

H.262 uses a combination of Discrete Cosine Transform (DCT) and Quantization to reduce the amount of data required to represent a video signal. The standard also includes features such as Motion Compensation and Entropy Coding, which were developed by researchers at University of Oxford, University of Cambridge, and Georgia Institute of Technology. The H.262 standard supports a wide range of video formats, including 4:3 and 16:9 aspect ratios, and it can operate at a variety of bit rates, from 2 Mbit/s to 50 Mbit/s, which are used in applications like IPTV (Internet Protocol Television) and OTT (Over-the-top) streaming, which are provided by companies like Netflix, Amazon Prime Video, and Hulu. The standard also includes mechanisms for Error Correction and Error Concealment, which were developed by researchers at University of Tokyo, University of Seoul, and National Taiwan University.

Applications

H.262 has been widely used in various applications, including Digital Television (DTV), Cable Television (CATV), and Satellite Broadcasting (SB), which are regulated by organizations like the Federal Communications Commission (FCC) in the United States and the European Broadcasting Union (EBU) in Europe. The standard is also used in the production of Blu-ray Disc (BD) and HD DVD (High-Definition Digital Versatile Disc) formats, which were developed by companies like Samsung, LG, and Panasonic. Additionally, H.262 is used in Video on Demand (VOD) and IPTV (Internet Protocol Television) applications, which are provided by companies like Netflix, Amazon Prime Video, and Hulu, and it is also used in the Gaming Industry (GI), including companies like Sony Interactive Entertainment, Microsoft Studios, and Nintendo.

Comparison with Other Standards

H.262 is one of several video compression standards that have been developed over the years, including MPEG-1, H.263, and H.264. Each of these standards has its own strengths and weaknesses, and the choice of which standard to use depends on the specific application and requirements, such as the Bit Rate and the Video Quality, which are measured using metrics like PSNR (Peak Signal-to-Noise Ratio) and SSIM (Structural Similarity Index Measure). H.262 is widely used in Broadcasting Applications (BA), while H.264 is more commonly used in Internet Streaming (IS) applications, which are provided by companies like YouTube, Facebook, and Twitch. The Society of Motion Picture and Television Engineers (SMPTE) and the International Telecommunication Union (ITU) have developed guidelines for the use of these standards in different applications, including Digital Cinema (DC) and Virtual Reality (VR) applications, which are developed by companies like IMAX, Dolby Laboratories, and HTC Vive.

Implementation

The implementation of H.262 requires a deep understanding of the standard and its requirements, as well as the development of sophisticated software and hardware systems, which are provided by companies like Intel, AMD, and NVIDIA. The standard has been implemented in a wide range of devices, including Set-top Boxes (STB), Digital Video Recorders (DVR), and Blu-ray Disc Players (BDP), which are manufactured by companies like Samsung, LG, and Sony. The implementation of H.262 also requires the development of Content Creation (CC) tools, such as Video Editing Software (VES) and Video Encoding Software (VES), which are provided by companies like Adobe Systems, Avid Technology, and Blackmagic Design. The Academy of Motion Picture Arts and Sciences (AMPAS) and the Society of Motion Picture and Television Engineers (SMPTE) have developed guidelines for the implementation of H.262 in different applications, including Film Production (FP) and Television Production (TP) applications, which are developed by companies like Warner Bros., Universal Pictures, and BBC Studios.

Category:Video codecs