By Huifang Sun
Execs within the video and multimedia industries want a e-book that explains criteria for video coding and the way to transform the compressed info among criteria. electronic Video Transcoding for Transmission and garage solutions this call for whereas additionally delivering the theories and rules of video compression and transcoding applied sciences. Emphasizing electronic video transcoding options, this booklet summarizes its content material through examples of sensible tools for transcoder implementation. It relates just about all of its featured transcoding applied sciences to sensible applications.
This quantity takes a based process, beginning with easy video transcoding techniques and progressing towards the main refined platforms. It summarizes fabric from examine papers, lectures, and shows. equipped into 4 components, the textual content first offers the heritage of video coding concept, ideas of video transmission, and video coding criteria. the second one half contains 3 chapters that designate the idea of video transcoding and useful difficulties. The 3rd half explores buffer administration, packet scheduling, and encryption within the transcoding. The publication concludes through describing the appliance of transcoding, common multimedia entry with the rising MPEG-21 general, and the end-to-end attempt mattress.
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Extra resources for Digital Video Transcoding for Transmission and Storage
In the reﬁnement pass, all of the coefﬁcients in the LSP are visited with similar reﬁnement process of EZW as described in the previous section. Generalizing SPIHT to the three-dimensional case for color video was investigated in [1-28]. 263 video standard, with additional functionality of multiresolution in the spatio-temporal domain. 16. For the connected pixels, the current frame can ﬁnd corresponding pixels in the previous frame and thus a twotap Haar ﬁlter can be used to obtain the low-frequency and high-frequency components.
1. In the following, we introduce the basic tools and enhancement tools that are used in many video-coding standards. From these tools it is easily to understand the principles of video coding standards. 3 BASIC TOOLS FOR DIGITAL VIDEO CODING STANDARDS The principal goal in the design of a video coding system is to reduce the number of bits, which is used to represent the video source, subject to some picture quality constraints. Two factors allow us to accomplish the goal of compression. 1 Illustration of audio/video coding procedure by MPEG standards.
It should be noted that after quantization some information are lost, and this loss is not recoverable. However, due to the perceptual limitations of human vision, the lost information may not be perceptually noticed by a properly designed coding system. 3 DC and AC Prediction After a video frame is partitioned into blocks, the transform coding is applied to each block. In such a way, the correlation between pixels within a block has been used for data compression. Since the blocks are coded independently, the correlation between blocks is not used yet.