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GPU-Based MPEG-2 to Secure Scalable Video Transcoding

机译:基于GPU的MPEG-2保护可扩展的视频转码

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摘要

Most of the high definition video content are still produced in a single-layer MPEG-2 format. Multiple-layers Scalable Video Coding (SVC) offers a minor penalty in rate-distortion efficiency when compared to single-layer coding MPEG-2. A scaled version of the original SVC bitstream can easily be extracted by dropping layers from the bitstream. This paper proposes a parallel transcoder from MPEG-2 to SVC video with Graphics Processing Unit (GPU), named PTSVC. The objective of the transcoder is to migrate MPEG-2 format video to SVC format video such that clients with different network bandwidth and terminal devices can seamlessly access video content. Meanwhile, the transcoded SVC videos are encrypted such that only authorized users can access corresponding SVC layers. Using various scalabilities SVC test sequences, experimental results on TM5 and JSVM indicate that PTSVC is a higher efficient transcoding system compared with previous systems and only causes little quality loss.
机译:大多数高清视频内容仍以单层MPEG-2格式生成。与单层编码MPEG-2相比,多层可伸缩视频编码(SVC)对速率失真效率的影响较小。通过从比特流中删除图层,可以轻松提取原始SVC比特流的缩放版本。本文提出了一种带有图形处理单元(GPU)的从MPEG-2到SVC视频的并行代码转换器,称为PTSVC。代码转换器的目的是将MPEG-2格式的视频迁移到SVC格式的视频,以便具有不同网络带宽的客户端和终端设备可以无缝访问视频内容。同时,对转码后的SVC视频进行加密,以便只有授权用户才能访问相应的SVC层。使用各种可扩展性SVC测试序列,在TM5和JSVM上的实验结果表明,与以前的系统相比,PTSVC是一种效率更高的转码系统,并且几乎不会造成质量损失。

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