The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
인터넷을 통해 비디오 스트리밍 서비스를 제공하는 데에는 몇 가지 문제가 있습니다. 그 중 두 가지는 네트워크 용량의 이질성과 비디오 데이터 속도의 가변성입니다. 네트워크 세그먼트의 용량은 제한되어 있습니다. 한편, 전송되는 비디오 데이터의 속도는 거의 일정한 이미지 품질을 얻기 위해 매우 가변적입니다. 따라서 용량이 제한된 네트워크를 통해 가변 비트 전송률(VBR) 비디오 데이터를 전송하려면 해당 비트 전송률을 조정해야 합니다. 본 논문에서는 비트율 트랜스코딩과 비트율 평활화 알고리즘을 결합한 TaS(Transcoding-after-Smoothing)라고 불리는 VBR MPEG 비디오 데이터의 전송 비트율을 조정하는 시스템을 제안한다. 시스템은 비디오 데이터의 전송 속도를 평활화하는 동시에 전송 비트 속도를 특정 임계값 미만으로 유지하기 위해 필요한 경우 일부 비디오 프레임에 대한 트랜스코딩을 수행합니다. 두 가지 종류의 TaS 방법이 제안되었습니다. 한 가지 방법에는 트랜스코딩 기본 설정이 없는 반면, 다른 방법은 인트라 코딩된 프레임이 트랜스코딩되는 마지막 프레임인 프레임 유형 기본 설정을 사용합니다. 이러한 방법은 클라이언트가 VBR 비디오 데이터에 액세스하는 비디오 서버에서 구현됩니다. 우리의 실험 결과는 첫 번째 TaS 방법이 두 번째 TaS 방법 및 기존 프레임 수준 트랜스코딩에 비해 트랜스코딩된 프레임 수를 크게 줄이는 것으로 나타났습니다. 그러나 두 번째 방법이 품질 왜곡을 최소화하는 데 더 효과적입니다.
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I Gusti Bagus Baskara NUGRAHA, Hiroyoshi MORITA, "Transcoding-after-Smoothing System for VBR MPEG Video Streaming" in IEICE TRANSACTIONS on Information,
vol. E92-D, no. 2, pp. 298-309, February 2009, doi: 10.1587/transinf.E92.D.298.
Abstract: Delivering video streaming service over the Internet encounters some challenges. Two of them are heterogeneity of networks capacity and variability of video data rate. The capacity of network segments are constrained. Meanwhile, the rate of video data to be transmitted is highly variable in order to get near-constant images quality. Therefore, to send variable bit rate (VBR) video data over capacity-constrained network, its bit rate should be adjusted. In this paper a system to adjust the transmission bit rate of VBR MPEG video data called Transcoding-after-Smoothing (TaS), which is a combination of bit rate transcoding and bit rate smoothing algorithm, is proposed. The system smoothes out transmission rate of video data while at the same time also performs transcoding on some video frames when necessary in order to keep the transmission bit rate below a certain threshold value. Two kinds of TaS methods are proposed. One method does not have transcoding preference, while the other method uses frame type preference where an intra-coded frame is the last one that will be transcoded. These methods are implemented in our video server where a VBR video data is accessed by a client. Our experiment results show that the first TaS method yields significant reduction in the number of transcoded frames compared with the second TaS method and conventional frame-level transcoding. However, the second method performs better in minimizing the quality distortion.
URL: https://global.ieice.org/en_transactions/information/10.1587/transinf.E92.D.298/_p
부
@ARTICLE{e92-d_2_298,
author={I Gusti Bagus Baskara NUGRAHA, Hiroyoshi MORITA, },
journal={IEICE TRANSACTIONS on Information},
title={Transcoding-after-Smoothing System for VBR MPEG Video Streaming},
year={2009},
volume={E92-D},
number={2},
pages={298-309},
abstract={Delivering video streaming service over the Internet encounters some challenges. Two of them are heterogeneity of networks capacity and variability of video data rate. The capacity of network segments are constrained. Meanwhile, the rate of video data to be transmitted is highly variable in order to get near-constant images quality. Therefore, to send variable bit rate (VBR) video data over capacity-constrained network, its bit rate should be adjusted. In this paper a system to adjust the transmission bit rate of VBR MPEG video data called Transcoding-after-Smoothing (TaS), which is a combination of bit rate transcoding and bit rate smoothing algorithm, is proposed. The system smoothes out transmission rate of video data while at the same time also performs transcoding on some video frames when necessary in order to keep the transmission bit rate below a certain threshold value. Two kinds of TaS methods are proposed. One method does not have transcoding preference, while the other method uses frame type preference where an intra-coded frame is the last one that will be transcoded. These methods are implemented in our video server where a VBR video data is accessed by a client. Our experiment results show that the first TaS method yields significant reduction in the number of transcoded frames compared with the second TaS method and conventional frame-level transcoding. However, the second method performs better in minimizing the quality distortion.},
keywords={},
doi={10.1587/transinf.E92.D.298},
ISSN={1745-1361},
month={February},}
부
TY - JOUR
TI - Transcoding-after-Smoothing System for VBR MPEG Video Streaming
T2 - IEICE TRANSACTIONS on Information
SP - 298
EP - 309
AU - I Gusti Bagus Baskara NUGRAHA
AU - Hiroyoshi MORITA
PY - 2009
DO - 10.1587/transinf.E92.D.298
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E92-D
IS - 2
JA - IEICE TRANSACTIONS on Information
Y1 - February 2009
AB - Delivering video streaming service over the Internet encounters some challenges. Two of them are heterogeneity of networks capacity and variability of video data rate. The capacity of network segments are constrained. Meanwhile, the rate of video data to be transmitted is highly variable in order to get near-constant images quality. Therefore, to send variable bit rate (VBR) video data over capacity-constrained network, its bit rate should be adjusted. In this paper a system to adjust the transmission bit rate of VBR MPEG video data called Transcoding-after-Smoothing (TaS), which is a combination of bit rate transcoding and bit rate smoothing algorithm, is proposed. The system smoothes out transmission rate of video data while at the same time also performs transcoding on some video frames when necessary in order to keep the transmission bit rate below a certain threshold value. Two kinds of TaS methods are proposed. One method does not have transcoding preference, while the other method uses frame type preference where an intra-coded frame is the last one that will be transcoded. These methods are implemented in our video server where a VBR video data is accessed by a client. Our experiment results show that the first TaS method yields significant reduction in the number of transcoded frames compared with the second TaS method and conventional frame-level transcoding. However, the second method performs better in minimizing the quality distortion.
ER -