A high quality VBR MPEG system for Internet and broadcasting applications

TitleA high quality VBR MPEG system for Internet and broadcasting applications
Publication TypeJournal Article
Year of Publication1997
AuthorsZahir, S., P. Nasiopoulos, and V. C. M. Leung
JournalConsumer Electronics, IEEE Transactions on
Pagination531 -536
Date Publishedaug.
Keywordsbandwidth allocation, bit rate selector, broadcasting, digital television, encoders-bank, GOP size, high quality VBR MPEG system, insertion, Internet, maximum bit rates, minimum bit rates, multiple video sources, multiplexed distribution, picture quality control process, real-time bit redistribution method, scene changes, television broadcasting, variable bit rate MPEG-2 encoding scheme, variable rate codes, VBR video stream, video coding, video quality

A high quality variable bit rate (VBR) MPEG-2 encoding scheme that offers optimum video quality and bandwidth allocation is presented. This scheme utilizes a real-time bit redistribution method, insertion of I frames at scene changes and large GOP (group of pictures) size to produce high picture quality. An encoders-bank with predetermined sets of ldquo;nominal-long-term rdquo;, minimum and maximum bit rates in combination with a sophisticated picture quality control process allows a bit rate selector to choose the optimum bit stream from a set of encoders, thus resulting in a high quality VBR video stream. The proposed scheme is very easy to implement and offers an efficient real-time VBR solution for broadcasting applications that involve multiplexed distribution of multiple video sources


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