最全面的MPEG4标准文档，涵盖音频、视频、系统、文件格式、一致性测试等等。属于官方发布的PDF文件，非常珍贵，是开发和科研的最理想，最珍贵的资料。-MPEG4 standards the most comprehensive document, covering audio, video, systems, file formats, conformance testing and so on. Part of the official release of the PDF file, ver

最全面的MPEG4标准文档，涵盖音频、视频、系统、文件格式、一致性测试等等。属于官方发布的PDF文件，非常珍贵，是开发和科研的最理想，最珍贵的资料。-MPEG4 standards the most comprehensive document, covering audio, video, systems, file formats, conformance testing and so on. Part of the official release of the PDF file, ver

30MHz-3000MHz地面数字音频广播系统技术规范，可做数字广播dab开发的参考文档。-30MHz-3000MHz Terrestrial Digital Audio Broadcasting System Technical Specifications, to do the development of digital radio dab reference documentation.

一个视频会议系统，对流媒体开发有很大的帮助，带有文档-A video conferencing system, greatly to the development of streaming media to help with documentation