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IEEE TRANSACTIONS ON MULTIMEDIA, VOL. 7, NO. 5, OCTOBER 2005 793 Video Transcoding: An Overview of Various
 

Summary: IEEE TRANSACTIONS ON MULTIMEDIA, VOL. 7, NO. 5, OCTOBER 2005 793
Video Transcoding: An Overview of Various
Techniques and Research Issues
Ishfaq Ahmad, Senior Member, IEEE, Xiaohui Wei, Student Member, IEEE, Yu Sun, Student Member, IEEE, and
Ya-Qin Zhang, Fellow, IEEE
Abstract--One of the fundamental challenges in deploying mul-
timedia systems, such as telemedicine, education, space endeavors,
marketing, crisis management, transportation, and military, is to
deliver smooth and uninterruptible flow of audio-visual informa-
tion, anytime and anywhere. A multimedia system may consist of
various devices (PCs, laptops, PDAs, smart phones, etc.) intercon-
nected via heterogeneous wireline and wireless networks. In such
systems, multimedia content originally authored and compressed
with a certain format may need bit rate adjustment and format
conversion in order to allow access by receiving devices with
diverse capabilities (display, memory, processing, decoder). Thus,
a transcoding mechanism is required to make the content adaptive
to the capabilities of diverse networks and client devices. A video
transcoder can perform several additional functions. For example,
if the bandwidth required for a particular video is fluctuating

  

Source: Ahmad, Ishfaq - Department of Computer Science and Engineering, University of Texas at Arlington

 

Collections: Computer Technologies and Information Sciences