Title :
A high quality VBR MPEG system for Internet and broadcasting applications
Author :
Zahir, S. ; Nasiopoulos, Panos ; Leung, Victor C M
Author_Institution :
Dept. of Electr. Eng., British Columbia Univ., Vancouver, BC, Canada
fDate :
8/1/1997 12:00:00 AM
Abstract :
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 “nominal-long-term”, 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
Keywords :
Internet; digital television; television broadcasting; variable rate codes; video coding; GOP size; Internet; VBR video stream; bandwidth allocation; bit rate selector; broadcasting; encoders-bank; high quality VBR MPEG system; insertion; maximum bit rates; minimum bit rates; multiple video sources; multiplexed distribution; picture quality control process; real-time bit redistribution method; scene changes; variable bit rate MPEG-2 encoding scheme; video quality; Bit rate; Channel allocation; DVD; Digital audio broadcasting; Digital video broadcasting; Encoding; Internet; Streaming media; Transform coding; Video compression;
Journal_Title :
Consumer Electronics, IEEE Transactions on
