By Jan Van der Meer
This ebook describes the basics and info of MPEG-2 structures technology
Written by means of knowledgeable within the box, this e-book examines the MPEG-2 procedure specification as built within the early 1990's, in addition to its evolution into the fourth variation of the MPEG-2 structures ordinary, released in 2013. whereas MPEG-2 structures will proceed to adapt extra, this booklet describes the MPEG-2 method performance as of October 2013. moreover, appropriate history details is equipped. The dialogue of MPEG-2 method performance calls for wisdom of varied primary matters, akin to timing, and supported content material codecs. for this reason additionally a few easy details on video and audio coding is equipped, together with their evolution. additionally different content material codecs supported in MPEG-2 structures are defined, so far as had to comprehend MPEG-2 systems.
- Ordered logically operating from the fundamentals and history via to the main points and basics of MPEG-2 shipping streams and software streams
- Explores vital matters in the standardization technique itself
- places the advancements on MPEG-2 structures into ancient perspective
- comprises help of 3D Video and shipping of AVC, SVC and MVC
- Concludes with extra matters resembling real-time interface, supply over IP networks and utilization by way of software standardization bodies
- Predicts a continual promising destiny for MPEG-2 shipping streams
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Additional info for Fundamentals and Evolution of MPEG-2 Systems: Paving the MPEG Road
Next, the macroblock to be coded is subtracted from the 16 16 block decided by the encoder and instead of coding the original samples in the macroblock, the sample differences are coded. To implement the above described reduction of temporal redundancy, while allowing good random access, three picture types are defined in MPEG-1 and MPEG-2. These picture types11 are: I-pictures, P-pictures and B-pictures; they can be characterized as follows. For this purpose the samples of corresponding positions in the two 16 16 blocks are averaged.
Csnumber=25039. 14. ISO/IEC (2006) MPEG-2 Part 7: Advanced Audio Coding (AAC). ISO/IEC 13818-7:2006. csnumber=43345. 15. ISO/IEC (2007) MPEG-2 Part 8 has been withdrawn. 16. ISO/IEC (1996) MPEG-2 Part 9: Extension for real time interface for systems decoders. ISO/IEC 13818-9:1996. csnumber=25434. 17. ISO/IEC (1999) MPEG-2 Part 10: Conformance extensions for Digital Storage Media Command and Control (DSM-CC). ISO/IEC 13818-10:1999. csnumber=27044. 18. ISO/IEC (2004) MPEG-2 Part 11: IPMP on MPEG-2 Systems.
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. 7 three pictures are depicted, in the middle the picture to be bi-directionally predicted and on the left and right side the two reference pictures, the left one from the past and the right one from the future. 5 pixel. To code each macroblock from the picture in the middle, the best match from the previous reference picture can be used, or the best match from the next reference picture, or the average10 from both matches.