软硬结合解码方式的4K视频播放系统  

4K Video Playback System Based on Hard and Soft Decoding Mode

作　　者：徐圣凯 潘飞[1] 

机构地区：[1]南京理工大学自动化学院,南京210000

出　　处：《计算机系统应用》2017年第4期91-94,共4页Computer Systems & Applications

摘　　要：针对4K视频数据量很大,传统的CPU软件解码技术无法满足性能要求.设计了一种软硬结合解码方式的4K视频播放系统,采用DirectShow和NVIDIA CUDA技术进行GPU硬件解码.系统功能包括硬件系统信息获取,视频源读取,视频硬解码和视频显示.实验结果表明,此播放系统在进行4K视频解码播放时,既保障了视频效果,又极大降低了CPU使用率.Due to the amount of 4K video data is large, and the traditional CPU software decoder technology cannot meet the performance requirement. The 4K video playback system based on combination of hard and soft decoding mode is designed, which uses DirectShow and CUDA hardware decoding technology. And the system includes functions of hardware system information acquisition, video source reader, video hard decoding, and video display. Experimental results show that this system can achieve good effect and greatly reduce the CPU occupancy rate when playing 4K video.

关 键 词：4K 软硬结合解码 DIRECTSHOW CUDA CPU使用率 

分 类 号：TN919.8[电子电信—通信与信息系统]