By Jan Van der Meer
This e-book describes the basics and info of MPEG-2 platforms technology
Written via a professional within the box, this booklet examines the MPEG-2 process specification as built within the early 1990's, in addition to its evolution into the fourth variation of the MPEG-2 platforms average, released in 2013. whereas MPEG-2 structures will proceed to conform extra, this booklet describes the MPEG-2 approach performance as of October 2013. moreover, proper history details is equipped. The dialogue of MPEG-2 method performance calls for wisdom of varied basic matters, corresponding to timing, and supported content material codecs. as a result additionally a few simple details on video and audio coding is supplied, together with their evolution. additionally different content material codecs supported in MPEG-2 platforms are defined, so far as had to comprehend MPEG-2 systems.
- Ordered logically operating from the fundamentals and heritage via to the main points and basics of MPEG-2 delivery streams and application streams
- Explores very important concerns in the standardization technique itself
- places the advancements on MPEG-2 platforms into historical perspective
- comprises aid of 3D Video and delivery of AVC, SVC and MVC
- Concludes with extra concerns equivalent to real-time interface, supply over IP networks and utilization by means of program standardization bodies
- Predicts a continual promising destiny for MPEG-2 delivery streams
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Additional resources for Fundamentals and Evolution of MPEG-2 Systems: Paving the MPEG Road
6 Example of motion compensated prediction from a reference picture version. To avoid error propagating prediction mismatches between encoder and decoder, also the encoder must use decoded instead of original reference pictures. Hence, for this purpose an encoder must include a decoder as well. A further method to reduce the temporal redundancy between pictures is the use of two reference pictures for the so-called bi-directional prediction, whereby one reference picture is from the past and the other one from the future.
3). 3 is called the DC (zero frequency) coefficient, all others are called AC coefficients. The DC coefficient represents the average value of the samples in the block; the AC coefficients with increasing vertical and horizontal index values represent higher vertical and horizontal spatial frequencies. The DCT is useful for compression because of its strong ‘energy compaction’ property: most of the signal information tends to be concentrated in a few low-frequency components of the DCT. A video signal can therefore more efficiently be described in the frequency domain than in the time domain.
Macroblocks are adjacent to each other and do not overlap. 2). A video signal can be described equally well by means of samples in the time domain and by its spectrum in the frequency domain. Like any other Fourier-related transform, a DCT converts a time domain description into a frequency domain description. Input to the DCT are samples of the video signal and at its output, the associated frequency components are available. 2 Subdividing a picture into slices with macroblocks and 8 8 blocks from the frequency components.
Fundamentals and Evolution of MPEG-2 Systems: Paving the MPEG Road by Jan Van der Meer