ISO_IEC 14496-12_14.zip

mp4标准文档ISO/IEC 14496-14; ISO/IEC 14496-12; Part 14: MP4 file format Introduction 0.1 Derivation This specification defines MP4 as an instance of the ISO Media File format [ISO/IEC 14496-12 and ISO/IEC 15444-12]. The general nature of the ISO Media File format is fully exercised by MP4. MPEG-4 presentations can be highly dynamic, and there is an infrastructure — the Object Descriptor Framework —, which serves to manage the objects and streams in a presentation. An Initial Object Descriptor serves as the starting point for this framework. In the usage modes documented in the ISO Media File, an Initial Object Descriptor would normally be present, as shown in the following diagrams.