mpeg1标准文档包括音频部分和视频部分,其中最有名的是mp3编解码部分 -mpeg1 standard documentation including audio and video, which is the most famous part of mp3 codecs

It is MPEG guide book

ISO/IEC 11172 - Information technology—Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s. The standard consists of the following five Parts-ISO 11172 MPEG1 part1/2/3 Systems (storage and synchronizat