Throughout this article, we concentrate on the transcoding of block-based video coding
schemes that use hybrid discrete cosine transform (DCT) and motion compensation (MC). In …

Video transcoding, due to its high practical values for a wide range of networked video
applications, has become an active research topic. We outline the technical issues and …

One of the fundamental challenges in deploying multimedia systems, such as telemedicine,
education, space endeavors, marketing, crisis management, transportation, and military, is …

Many of the forthcoming video services and multimedia applications are expected to use
preencoded video for storage and transmission. Video transcoding is intended to provide …

In this work, transcoding of pre-encoded MPEG-1, 2 video into lower bit rates is realized
through altering the coding algorithm into H. 261/H. 263 standards with lower spatio …

This paper discusses the problem of transcoding H. 263-based video streams. Two different
models for transcoding are examined, rate reduction and resolution reduction. Results show …

This paper discusses the problem of reduced-resolution transcoding of compressed video
bitstreams. An analysis of drift errors is provided to identify the sources of quality …

Transcoding is a key technique for reducing the bit rate of a previously compressed video
signal. A high transcoding ratio may result in an unacceptable picture quality when the full …

In transcoding, simply reusing the motion vectors extracted from an incoming video bit
stream may not result in the best quality. In this paper, we show that the incoming motion …

The invention provides a System and method for transcod ing compressed bitstreams of
digital Video Signals to a reduced Spatial resolution with minimum drift. First, Several …