CQM: Cumulative quality model for HTTP Adaptive Streaming

• This source code is an implementation in MATLAB of our cumulative quality model (CQM).
• Note that window quality can be obtained by different existing models for overall quality
• If you use the ITU-P1203 model as the window quality model, please see the requirements in https://github.com/itu-p1203/itu-p1203/

How to use

F_CQM.m : Function to calculate predicted cumulative quality values from CQM model

Input

• iniD : Initial duration (seconds)
• SQArr : One-dimensional array of segment quality values in the range [1,5] (MOS)
• SPArr : One-dimensional array of stalling positions (seconds)
• SDArr : One-dimensional array of stalling durations (seconds)
• wqModel : Window quality model 1: Tran's; 2: Guo's; 3: Vriendt's; 4: Yin's 5: p1203 (default: 1)
• sizeWArr : Array of Window Sizes corresponding to the last, average, maximum, and minimun window quality values (seconds) (default: [50, 60, 50, 50])
• weight : Weights of the last, average, maximum, and minimun window quality values (default:[0.31 0.37 0.01 0.31])

Output

• CQM: Array of predicted cumulative quality values

Example

A 120-second long session has 120 segments. The quality of the 1st-60th segments is 5 MOS. The quality of the 61st-80th segments is 2 MOS. The quality of the 81st-120th segments is 4 MOS. There are three stalling events as follows.

1. Initial delay:
   Starting time: 0s Length: 2s

2. Interruption:
   Starting time: 40s Length: 2s

   Starting time: 60s Length: 4s

To obtain the output, you can use the following command.

CQM= F_CQM(2,[5*ones(1,60),2*ones(1,20),4*ones(1,40)],[40,60],[2,4])

Authors

• Huyen Tran - The University of Aizu, Japan - tranhuyen1191@gmail.com
• If you have any questions or comments, please feel free to contact me.

Acknowledgments

If you use this source code in your research, please cite the references below:

Huyen T. T. Tran, Nam Pham Ngoc, Tobias Hoßfeld, Michael Seufert, and Truong Cong Thang. 2021. Cumulative Quality Modeling for HTTP Adaptive Streaming. ACM Trans. Multimedia Comput. Commun. Appl. 17, 1, Article 22 (February 2021), 24 pages. DOI:https://doi.org/10.1145/3423421

License

Permission is hereby granted, free of charge, to use the software for non-commercial research purposes.

Any other use of the software, including commercial use, merging, publishing, distributing, sublicensing, and/or selling copies of the Software, is forbidden.