Impact of packet loss distribution on the perceived IPTV video quality

2012 ◽  
Author(s):  
Ni Chen ◽  
Xiuhua Jiang ◽  
Caihong Wang
Keyword(s):  
Packet Loss ◽  
Video Quality ◽  
Loss Distribution

scholarly journals P2P video streaming combining SVC and MDC

2011 ◽  
Vol 21 (2) ◽  
pp. 295-306 ◽  
Author(s):  
Francisco de Asís López-Fuentes
Keyword(s):  
Video Coding ◽  
Video Streaming ◽  
Packet Loss ◽  
Scalable Video Coding ◽  
Video Quality ◽  
Scalable Video ◽  
Video Content ◽  
Multiple Description ◽  
Video Distribution ◽  
P2p Video Streaming

P2P video streaming combining SVC and MDC In this paper we propose and evaluate a combined SVC-MDC (Scalable Video Coding & Multiple Description Video Coding) video coding scheme for Peer-to-Peer (P2P) video multicast. The proposed scheme is based on a full cooperation established between the peer sites, which contribute their upload capacity during video distribution. The source site splits the video content into many small blocks and assigns each block to a single peer for redistribution. Our solution is implemented in a fully meshed P2P network in which peers are connected to each other via UDP (User Datagram Protocol) links. The video content is encoded by using the Scalable Video Coding (SVC) method. We present a flow control mechanism that allows us to optimize dynamically the overall throughput and to automatically adjust video quality for each peer. Thus, peers with different upload capacity receive different video quality. We also combine the SVC method with Multiple Description Coding (MDC) to alleviate the packet loss problem. We implemented and tested this approach in the PlanetLab infrastructure. The obtained results show that our solution achieves good performance and remarkable video quality in the presence of packet loss.

Analysis and Implementation of Raptor Codes for Video Multicast

2013 ◽  
Vol 347-350 ◽  
pp. 3845-3849
Author(s):  
Geng Wei ◽  
Cong Juan Li ◽  
Yu Dong Zhang
Keyword(s):  
Packet Loss ◽  
Video Transmission ◽  
System Simulation ◽  
Video Quality ◽  
Transmission System ◽  
Ip Multicast ◽  
Raptor Codes ◽  
Video Multicast ◽  
Simulation Results

Packet loss is unavoidable in IP multicast using the UDP protocol that will serious influence video quality. In this paper we use the Raptor codes for video multicast to improve the video quality. Firstly, the principle of Raptor codes is analyzed in detail. Then the Raptor codes is implemented and transplanted in the video transmission system. Simulation results show that the video transmission system with Raptor FEC works which can overcome the packet loss effectively and improve the playback quality significantly.

Not All Packets Are Equal, Part 2: The Impact of Network Packet Loss on Video Quality

2009 ◽  
Vol 13 (2) ◽  
pp. 74-82 ◽  
Author(s):  
Jason Greengrass ◽  
John Evans ◽  
Ali C. Begen
Keyword(s):  
Packet Loss ◽  
Video Quality ◽  
Equal Part ◽  
The Impact

Perceptual Video Quality Analysis for HEVC in Packet Loss Environment

2014 ◽  
Author(s):  
Bhupender Kumar ◽  
Shekhar Madnani ◽  
Advait Mogre ◽  
Muneesh Sharma ◽  
Shailesh Kumar
Keyword(s):  
Packet Loss ◽  
Video Quality ◽  
Quality Analysis ◽  
Perceptual Video Quality

scholarly journals Scalable Video Streaming for Single-Hop Wireless Networks Using a Contention-Based Access MAC Protocol

2008 ◽  
Vol 2008 ◽  
pp. 1-21
Author(s):  
Monchai Lertsutthiwong ◽  
Thinh Nguyen ◽  
Alan Fern
Keyword(s):  
Wireless Networks ◽  
Video Streaming ◽  
Admission Control ◽  
Packet Loss ◽  
Optimization Problem ◽  
Heuristic Algorithms ◽  
Mac Protocol ◽  
Video Quality ◽  
Streaming Applications

Limited bandwidth and high packet loss rate pose a serious challenge for video streaming applications over wireless networks. Even when packet loss is not present, the bandwidth fluctuation, as a result of an arbitrary number of active flows in an IEEE 802.11 network, can significantly degrade the video quality. This paper aims to enhance the quality of video streaming applications in wireless home networks via a joint optimization of video layer-allocation technique, admission control algorithm, and medium access control (MAC) protocol. Using an Aloha-like MAC protocol, we propose a novel admission control framework, which can be viewed as an optimization problem that maximizes the average quality of admitted videos, given a specified minimum video quality for each flow. We present some hardness results for the optimization problem under various conditions and propose some heuristic algorithms for finding a good solution. In particular, we show that a simple greedy layer-allocation algorithm can perform reasonably well, although it is typically not optimal. Consequently, we present a more expensive heuristic algorithm that guarantees to approximate the optimal solution within a constant factor. Simulation results demonstrate that our proposed framework can improve the video quality up to 26% as compared to those of the existing approaches.

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