# Internet Video Delivery Improved by Super-Resolution with GAN
## 7 Experimental Results
### Data Reduction Using Super-Resolution vs. Compression  
We analyzed the reduction in data when super-resolution was used and compared it with data reduction when applying compression. The general approach uses levels of compression, i.e., changing the QP, during the video encoding step to reduce the amount of data. The study in Section 7.3 sheds light on how we can combine super-resolution with compression without affecting the perceptual quality of videos. In this regard, we also analyzed the data transfer decrease when we combined those two approaches. Table 5 shows the average sizes with a 95% confidence interval of the 220 video samples at resolutions of 360p, 540p, 720p, and 1080p and presents the variation in compression levels as a function of \(QP=\{0,10,15,20,25\}\). Figure 9a,b show exponential decay in the average size of the videos as we reduce the resolution and compression in QP levels. It suggests that reducing the volume of data transmitted by applying compression and reducing resolution is possible. To prove this,  
Figure 8: CDFs of the gain in data volume: 2\(\times\) factor SR in mono-resolution and multi-resolution modalities. (**a**) CDFs of the gain in a mono-resolution. (**b**) CDFs of the gain in a multi-resolution adaptive stream. \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**QP** & **360p** & **540p** & **720p** & **1080p** \\ \hline
0 & 11.80 Mb (\(\pm\)0.54) & 27.43 Mb (\(\pm\)1.20) & 50.18 Mb (\(\pm\)2.16) & 117.71 Mb (\(\pm\)5.07) \\
10 & 4.74 Mb (\(\pm\)0.44) & 11.20 Mb (\(\pm\)0.97) & 21.42 Mb (\(\pm\)1.75) & 53.76 Mb (\(\pm\)4.13) \\
15 & 2.38 Mb (\(\pm\)0.29) & 5.01 Mb (\(\pm\)0.62) & 9.00 Mb (\(\pm\)1.09) & 22.81 Mb (\(\pm\)2.54) \\
20 & 1.24 Mb (\(\pm\)0.18) & 2.35 Mb (\(\pm\)0.35) & 3.80 Mb (\(\pm\)0.58) & 8.18 Mb (\(\pm\)1.28) \\
25 & 0.65 Mb (\(\pm\)0.10) & 1.18 Mb (\(\pm\)0.20) & 1.80 Mb (\(\pm\)0.32) & 3.38 Mb (\(\pm\)0.59) \\ \hline \hline \end{tabular}
\end{table} 
Table 5: The average size of videos with \(QP=\{0,10,15,20,25\}\) variations. we analyzed the decrease in the amount of data transmitted using videos with QP = 0 as the baseline. Table 6 shows the decrease for the mono-resolution (720p and 1080p) and multi-resolution modalities as shown in Figure 7. All the points are average values with a 95% confidence interval. Figure 9c shows the decrease in data transfer. The super-resolution decrease in 2\(\times\) (SR 2\(\times\)) is better than the compression decrease with \(QP=10\) in mono-resolution and multi-resolution. The combination of SR 2\(\times\) with \(QP=15\) decreased more than \(QP=15\) or \(QP=20\), and the highest decrease happened when combining SR 2\(\times\) + QP 20. This achieved 97.4%, 98.14%, and 98.42% for 720p, 1080p, and multi-resolution and mono-resolution modalities, respectively. \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Data** & **Mono-Resolution** & **Mono-Resolution** & **Multi** \\
**Reduction** & **720p** & **1080p** & **Resolution** \\ \hline SR 2\(\times\) & 76.35\% (\(\pm 0.38\)) & 76.52\% (\(\pm 0.35\)) & 80.99\% (\(\pm 0.23\)) \\ QP10 & 60.67\% (\(\pm 1.73\)) & 57.83\% (\(\pm 1.78\)) & 59.28\% (\(\pm 1.69\)) \\ QP15 & 84.13\% (\(\pm 1.23\)) & 82.80\% (\(\pm 1.22\)) & 83.12\% (\(\pm 1.18\)) \\ QP20 & 93.34\% (\(\pm 0.69\)) & 93.91\% (\(\pm 0.65\)) & 93.37\% (\(\pm 0.68\)) \\ SR 2\(\times\)+QP15 & 95.62\% (\(\pm 0.36\)) & 96.07\% (\(\pm 0.34\)) & 96.74\% (\(\pm 0.27\)) \\ SR 2\(\times\)+QP20 & **97.74**\% (\(\pm 0.22\)) & **98.14**\% (\(\pm 0.20\)) & **98.42**\% (\(\pm 0.16\)) \\ \hline \hline \end{tabular}
\end{table} 
Table 6: Decrease over mono-resolution and multi-resolution delivery and compression level. Figure 9: The average size of videos encoded in different resolutions and levels of compression and the decrease in networking traffic for mono-resolution and multi-resolution modalities. (**a**) Average video size in Mb with variation \(QP=\{0,10,15\}\). (**b**) Average video size in Mb with variation \(QP=\{15,20,25\}\).