本文提出了一种嵌入式家庭多媒体综合应用平台的软件框架,硬件基于TI公司的TMDXEVM6446数字媒体评估板。在该框架下实现了多种典型家庭多媒体应用,包括基于SIP的H.264标清D1 22fps或CIF 30fps视频通话,以及本地和远程多媒体文件播放、录制等。 关键词: 嵌入式; 多媒体; RTP/RTCP; H.264; 缓冲 Abstract: This paper proposes a software framework for integrated home multimedia application embedded platform based on digital media evaluation board TITM TMDXEVM6446. According to the framework, several typical applications are implemented, including SIP-based H.264 video call featuring D1 resolution 22 fps video, and local or remote multimedia file playing and recording. Key words: embedded system; multimedia streaming; RTP/RTCP; H.264; buffer