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由于PC的速度有限,当视频回放的路数较多时,可能无法同时满足所有路的回放CPU资源要求,这时就需要进行合理的资源分配和调度。在多路回放中,每一路视频流可能对应于一种不同的网络带宽和传输质量,用户对每一路的回放质量、速度要求也会有差别。该文根据用户服务质量(QoS)要求,利用多缓冲区和调度算法对多路视频回放给出了一种优化解决方案。实验运行表明,该文算法的性能优于现有商用多路视频播放器。
Due to the limited speed of the PC, when there are many video playback channels, the CPU resource requirements of all the channels may not be able to be satisfied at the same time. In this case, reasonable resource allocation and scheduling are required. In multi-channel playback, each channel of video stream may correspond to a different network bandwidth and transmission quality, users of each channel playback quality, speed requirements will be different. According to QoS requirements of users, this paper presents an optimized solution to multi-channel video playback by using multiple buffers and scheduling algorithms. Experimental results show that the performance of the proposed algorithm is superior to the existing commercial multi-channel video player.