Video transcoding has become a key technology for video content distribution network service. In this paper, we propose a novel MapReduce-based parallel video transcoding method. In our method, video files are stored ...
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Video transcoding has become a key technology for video content distribution network service. In this paper, we propose a novel MapReduce-based parallel video transcoding method. In our method, video files are stored on a shared file system to reduce the overhead of disks I/O and networks in the Hadoop MapReduce. FFmpeg is used to compute the splitting point of the video and the actual video transcoding. Experimental results show that our method can significantly reduce the time of transcoding.
As people puts forward more requirements for high-definition video industry, capture, transcoding, storage and display of high-definition video then become progressively imperative. This paper presents a parallel vide...
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ISBN:
(纸本)9783662483862;9783662483848
As people puts forward more requirements for high-definition video industry, capture, transcoding, storage and display of high-definition video then become progressively imperative. This paper presents a parallel video SoC system for faster and flexible 1080P video processing. The key elements of this system, including parallel RGB to YUV transcoder, two-level pipeline and high speed memory controller, are elaborated. 0.028 um CMOS technology node is applied for implementing the SoC architecture. It is competitive in providing high quality images and is proved to be well supportive for DVI and HDMI signal.
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-la...
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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.
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