Design And Research Of Embedded High-definition Video Recording And Playing System

Video data storage and playback technology are widely used in people's work and life,especially in education,medical treatment and military.Recent years,the high resolution image processing and the network video transfer is the hotspot of embedded video technology.Because of the limitation of resources,the embedded platform is still having no ability to process real-time HD video and network video.This paper focus on the problems above,using Huawei company' s Hi3531 digital video processor to design a set of embedded HD video recording,compression,playing and network-transfer system.This Embedded High-definition Video Recording and Playing System complete these following functions:1.Using the SDI video interface for HD video capture and playback and BT.1120 video interface to achieve a small touch-screen video preview.2.Using Hi3531 digital video processor for video compression processing.Two 1080p video input and then are compressed by H.264 and encapsulated by mp4.Set SATA interface to hard disk hardware,encoded or raw data are recorded on the hard disk.3.Hi3531 encoded by two 1000M Ethernet port sent through the switch to a PC,PC decode by software and then display,where you can do some intelligent interaction,such as implementing a watermarked image features that make video broadcast with anti-theft features.4.Hi3531 sends the encoded data to the recording server,the server use network card to receive audio and video data,packed into http/rtsp form/ts stream,and outputs the data to a PC or a terminal display device.decodes server also receives remote client messages to implement video playback or other video processing.