基于Gstreamer的视频采集编码与传输系统的设计  

Design of Video Capture Coding and Transmission System Based on Gstreamer

作　　者：张雷 崔雪峰 ZHANG Lei;CUI Xue-feng(Shenyang Aerospace University,School of Electronic Information Engineering,Shenyang 110136,China)

机构地区：[1]沈阳航空航天大学电子信息工程学院,辽宁沈阳110136

出　　处：《电脑与信息技术》2021年第2期34-39,共6页Computer and Information Technology

摘　　要：为了降低视频传输过程中的延时。系统从HD-SDI摄像头采集格式为YUYV的原始视频数据,一路经过NVIDIA嵌入式平台Jetson TX2上HEVC硬件编码、RTP传输。另一路作为预留接口,让Gstreamer与其他应用程序进行交互。在PC端使用相同的视频数据进行软件编码。结果表明,当压缩比一样的情况下,此系统中的HEVC硬件编码器比软件编码器的编码速率快2个数量级,PSNR高6dB。从客户端接收显示的画面可以看到,系统实现了实时传输并且在4K分辨率的时候依然可以正常进行实时观看。To reduce the delay in video transmission.The system collects the original video data in the format of YUYV from the HD-SDI camera,and all the way through HEVC hardware coding and RTP transmission on NVIDIA embedded platform Jetson TX2.The other is a reserved interface that lets Gstreamer interact with other applications.The same video data is used for software coding on PC.The results show that when the compression ratio is the same,the coding rate of the hardware encoder in this system is two orders of magnitude faster than that of the software encoder,and the PSNR is 6dB higher.As can be seen from the screen received from the client,the system realizes real-time transmission and can still watch in real time at 4K resolution.

关 键 词：GSTREAMER Jetson TX2 超高清视频编码 实时传输协议 

分 类 号：TN919.8[电子电信—通信与信息系统] TP393[电子电信—信息与通信工程]