A vehicle driving audio and video monitoring system, based on HiSilicon media processing platform is presented. Using a Hi3515C chip as the control core, combined with a video decoder chip NVP1914, the multi-channel video capture, OSD watermark, audio and video integration, storage, playback, and other function modules are designed. The human machine interface is developed based on Qt. It supports the PAL/NTSC video input format, synthetic or split-screen display switching, D1 or CIF resolution selection, and MP4 file format. The experimental results show that the system is safe and reliable and have better scalability.%本文介绍了一种基于海思媒体处理器的车载驾驶音视频监控系统设计方案。该系统以Hi3515C为核心，结合视频编解码芯片NVP1914，设计了多路音视频采集、OSD水印、音视频融合、存储、回放等功能模块。该系统基于Qt开发了人机交互界面，支持PAL/NTSC两种视频格式输入、合成或分屏切换显示、分辨率D1或CIF可选，并以MP4文件格式保存数据。实验表明系统安全可靠、扩展性强。
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