MPEG2 is the basis for nearly all currently running digital tv services. The official standard name is:

ISO/IEC 13818 - Generic coding of moving pictures and associated audio

It has been divided into several parts, each about for a different topic:

13818-1: Systems

This first part describes the syntax of the different tables and stream types that are used in MPEG2. 

13818-2: Video

Specifies the coded representation of video data and the decoding process required to reconstruct pictures.

13818-3: Audio

Specifies the coded representation of audio data.

13818-4: Compliance

Specifies how to determine the the characteristics of coded bitstreams and for testing compliance with the requirements stated in part 1-3

13818-5: Software

Contains some software examples for part 1-3

13818-6: Extensions for DSM-CC
13818-7: Advanced Audio Coding (AAC)
13818-8: ?
13818-9: Extensions for a real time interface for systems decoders
13818-10: Conformance testing for Digital Storage Media Command and Control (DSM-CC)

How to get the documents ?

Unfortunately the standards are not available free of charge. The ISO expects you to pay more than $150 per document. Searching the web or asking your friends for an (illegal) copy is definitely the cheaper solution if you just want to read a little bit.

You can order the documents directly at the ISO webstore. Just search the document, click into the results and an "Add to basket" link will appear that will add the document to your shopping basket.

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