Design of Dual-channel HD Audio and Video Recording and Playback Equipment Based on TMS320DM8168

Abstract

In order to meet the needs of dual-channel high-resolution audio and video recording, storage, and playback, as well as important control scenarios such as shipboard, vehicle, and airborne, the need for long-term capture and recording of terminal screen information is convenient for post-event technical analysis, Service quality assessment, exercise deduction, and operation accident responsibility identification. Researched the high-performance DaVinci series chip TMS320DM8168 launched by TI, designed and implemented a record playback device that supports dual-channel high-definition video, using the compression algorithm of the H.264 encoding standard to achieve compression and storage of video data, Use advanced and mature technology, follow the generalized, modular and serial design ideas to ensure better applicability and higher reliability. After the design was completed, the functions of video capture, compression encoding and video playback were verified, and the performance and stability were tested. The delay of video capture and display is within 40ms, The equipment can support high-definition single-channel or dual-channel video input, and realize two channels video information is compressed and stored, while the video decompression is stable, the playback picture is clear, and there is no jitter. The system functions and performance reach the expected goals.