Dynamic Packet Selection for H.264 Video Streaming over IEEE 802.11e WLANs

Chen, Wen-Tsuen; Lin, Tzu‐Ching; Chang, Yu-Chu; Chen, Jyh-Cheng

doi:10.1109/wcnc.2008.547

Cited by 13 publications

(9 citation statements)

References 6 publications

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“…A number of previous data partition prioritization schemes have focused on the cross-layer design in order to enhance the quality of the video streaming [4][5][6][7][8][9]. [21], the size of the encoded video file is larger than that of the video file encoded with the High or Main profiles.…”

Section: Related Workmentioning

confidence: 99%

“…The notable approaches include the data partition prioritization schemes based on the H.264/AVC Extended profile [4][5][6][7][8][9]. In these schemes, the H.264/AVC network abstraction layer (NAL) header information, such as Nal_Ref_Idc (NRI), is mapped to the IEEE 802.11e access categories (ACs) in order to provide highly error-resilient transmission of video.…”

Section: Introductionmentioning

confidence: 99%

“…First, the existing data partition prioritization schemes only work in the Extended profile [5], which is a profile that is rarely used in practice. Second, the existing schemes focus primarily on the granularity of the data partitions [4][5][6][7][8][9] or video frames [10][11][12][13][14][15] of H.264/AVC. In order to enhance the quality of the video streaming, the stream should be processed on a per-packet basis.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Cross-layer packet prioritization for error-resilient transmission of IPTV system over wireless network

Kang

Yoon

et al. 2014

Proceedings of the 5th ACM Multimedia Systems Conference

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This paper proposes a novel cross-layer packet prioritization scheme that overcomes the limitations of conventional video prioritization schemes for IPTV system. In the conventional schemes, the Extend profile or frame unit is used for prioritization and these incur limited uses of the video prioritization schemes or unreliable transmission of the P-frame and B-frame headers. In order to overcome these limitations, the proposed scheme uses the MPEG-2 system information and the H.264/AVC NAL header information to prioritize the important video packets including the P-frame and B-frame headers. The experimental results using a testbed demonstrated that the proposed scheme has a significant performance enhancement over the conventional video prioritization schemes in terms of packet utilization ratio for video streaming, direct frame loss ratio, and PSNR.

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Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cross-layer packet prioritization for error-resilient transmission of IPTV system over wireless network

Kang

Yoon

et al. 2014

Proceedings of the 5th ACM Multimedia Systems Conference

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“…With video codecs that support the concept of slicing, this technique can be expanded below the frame level. As an example, one can distinguish between instantaneous decoder refresh (IDR) and non-IDR partition A, B, and C slices in the case of H.264, or between different groups of blocks (GOBs) in the case of MPEG-4 ASP [17]. Layers of scalable video codecs can be considered as additional classification criterion, as proposed by Fiandrotti et al [8].…”

Section: A Lightweight Prioritization Schemesmentioning

confidence: 99%

Optimizing Selective ARQ for H.264 Live Streaming: A Novel Method for Predicting Loss-Impact in Real Time

Schier

Welzl

2012

IEEE Trans. Multimedia

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Abstract-This work proposes a quality-oriented, real-time capable prioritization technique for media units of H.264/AVC video streams. The derivation of estimates is based on the analysis of the macroblock partitioning, the spatial extents of temporal dependencies, and the length and strength of prediction chains existing among macroblocks, thus incorporating the expected impact of error propagation. It is demonstrated how the prioritization scheme can be beneficially integrated into live streaming systems which are characterized by tight timing constraints, with the focus on content-aware selective automatic repeat request mechanisms. Additionally, it is shown how potentially limited feedback can be used to adapt the estimation process to leverage prediction preciseness. The approach is compared against existing techniques in terms of practicability and efficiency, and tested under independent and bursty loss conditions in a wired and a wireless test setup. Moreover, the performance is examined when low-latency and constant bitrate video settings are enforced by using x264's novel encoding feature periodic-intra-refresh. Results of both experiments and simulations indicate that the proposed technique outperforms all reference techniques in nearly all test cases, and that the video quality can be further improved by incorporating receiver feedback.Index Terms-End-to-end distortion modeling, error propagation, H.264/AVC, live video streaming, packet loss, selective automatic repeat request (ARQ).

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“…In [20], packet classification is performed at the subframe-or slice-level. However, the authors employ the same method of prioritization as in [12] that is through data-partitioned video encoding.…”

Section: Contextmentioning

confidence: 99%

Distortion-Based Slice Level Prioritization for Real-Time Video over QoS-Enabled Wireless Networks

Ali

Fleury

Ghanbari

2012

Advances in Multimedia

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This paper presents a prioritization scheme based on an analysis of the impact on objective video quality when dropping individual slices from coded video streams. It is shown that giving higher-priority classified packets preference in accessing the wireless media results in considerable quality gain (up to 3 dB in tests) over the case when no prioritization is applied. The proposed scheme is demonstrated for an IEEE 802.11e quality-of-service-(QoS-) enabled wireless LAN. Though more complex prioritization systems are possible, the proposed scheme is crafted for mobile interactive or user-to-user video services and is simply implemented within the Main or the Baseline profiles of an H.264 codec.

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Dynamic Packet Selection for H.264 Video Streaming over IEEE 802.11e WLANs

Cited by 13 publications

References 6 publications

Cross-layer packet prioritization for error-resilient transmission of IPTV system over wireless network

Cross-layer packet prioritization for error-resilient transmission of IPTV system over wireless network

Optimizing Selective ARQ for H.264 Live Streaming: A Novel Method for Predicting Loss-Impact in Real Time

Distortion-Based Slice Level Prioritization for Real-Time Video over QoS-Enabled Wireless Networks

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