【摘要】 MPEG-4标准的编码是基于对象的,用户可以对对象进行操作和控制,这种操作和控制是通过对象描述符来实现的,一系列描述符组成对象描述框架,将基本码流和具体的视音频对象联系起来,该文对此进行了详细的阐述。MPEG-4系统层是MPEG-4标准得以实现的关键所在,为此该文对解码器模型和码流同步管理结合IM1实现作出分析。更多还原

【Abstract】 MPEG-4is a standard about coding of audio-visual objects,which can be operated and controlled.A set of descriptors compr ise the object description framework,which can identify and describe elementary streams and to associate them with audio-visual objects.We have discussed t hese details in this paper.MPEG-4system is the key part of the MPEG-4standa rd.System decoder model and elementary stream synchronization management have been analyzed by associating with the implementation(IM1).更多还原