The environments for our experiments发送机接收机转发服务器MPEG-2MPEG-2IP networkSourcewithDecoder with/Loss Generatortransporttransport coderdecoder
The environments for our experiments
The log files of the experimentsLogfilesintheexperimentsThelog files recordthevideofreguencywithdifferentprobabilities (0.1% 5%) of packet loss.The log files record the loss locations in the UDP/RTPvector with total 44412The networkparameters2(losspos++ - losspos,)meandis tan ce =中NS(lossposi+, -losspos, -meanquality)var distance:
The log files of the experiments ► Log files in the experiments ▪ The log files record the video frequency with different probabilities (0.1% — 5%) of packet loss. ▪ The log files record the loss locations in the UDP/RTP vector with total 44412. ► The network parameters ▪ ▪ 1 1 0 1 tan ( ) N i i i meandis ce losspos losspos N − + = = − 1 2 1 0 1 var tan ( ) 1 N i i i dis ce losspos losspos meanquality N − + = = − − −
The quality change with the probabilities of packet lossTheprobabilityvs.meanquality12.5seeee211.50109.58.51LTfT1.00.51.522.533.544.545Theprobabilityof losspackets
The quality change with the probabilities of packet loss 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 The probability vs.mean quality The probability of loss packets The mean quality of images
The quality change with the probabilities of packet loss (continued)Variancevs.Quality25eee201022.530.51.53.54.5Theprobabilityof losspackets
The quality change with the probabilities of packet loss (continued) 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0 5 10 15 20 25 Variance vs.Quality The probability of loss packets The variance of image quality
Verify the real results in the video frequencyThequalityoflossprobability235% 2.5% 5en25215200300100400500ThenumberofframesCompare three sections of video frequency
Verify the real results in the video frequency 0 100 200 300 400 500 5 10 15 20 25 30 35 40 The quality of loss probability The number of frames The quality metric 0 % 2.5 % 5 Compare three sections of video frequency