摘要
本文率先研究了4K超高清视频在无人机航拍直播中的运用。传输过程采用电信、联通、移动三路运营商并行数据传输的多链路传输形式,同时为了增加链路利用率并减少丢包,提出一种基于LT码的在线除删算法。从测试结果可知,超高清视频的码率在5Mbps^8Mbps时能实现较好的图像还原,并可实现视频的实时传输,基本满足新闻直播的技术要求。
In this paper, the 4K ultra high definition video of the live television by the unmanned aerial vehicle is studied. The multi-link transmission mode of the paralleled data is used by the three major telecom operators, i.e. China Telecom, China Unicorn and China Mobile. Moreover, in order to increase the link utilization and reduce the packet loss, a novel on-the^fly erasure algorithm based on LT code is proposed. It can be seen fiom the test results that the video images can be well decoded when the rate of the ultra high definition video is 5Mbps-8Mbps. The goal of real-time video transmission and news live broadcasting can be achieved technically.
出处
《广播与电视技术》
2015年第10期44-47,共4页
Radio & TV Broadcast Engineering
关键词
4K超高清视频
无人机
4G/LTE
多链路传输
基于LT码的在线除删算法
4K ultra high definition video, Unmanned aerial vehicle, 4G/LTE, Multi-link transmission, On-the-fly erasure algorithm based on LT code
