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TU1 mode on average is 8% worse in BD rate as compared to HM14. This is highest quality mode in<br />
<strong>Media</strong> <strong>Server</strong> <strong>Studio</strong>.<br />
TU4 mode on average is 18% worse in BD rate as compared to HM14. As shown later, this mode<br />
provides an excellent tradeoff of quality vs speed.<br />
TU7 mode on average is 29% worse in BD rate as compared to HM14. As shown later, this is the fastest<br />
software only mode in <strong>Media</strong> <strong>Server</strong> <strong>Studio</strong>.<br />
Now that we have completed quality analysis of various TU modes of <strong>Media</strong> <strong>Server</strong> <strong>Studio</strong>, the next<br />
obvious step is to perform analysis of encoding speed offered by each of these modes; this issue is<br />
discussed at length in the next section.<br />
<strong>Intel®</strong> <strong>Media</strong> <strong>Server</strong> <strong>Studio</strong> <strong>HEVC</strong> Encoder <strong>Quality</strong> vs <strong>Performance</strong><br />
Tradeoffs for 4:2:2 10-bit Content<br />
For measurement of encoding speed (fps) and speed vs quality tradeoffs, a recently released reference<br />
PC Platform (<strong>Intel®</strong> Core i7-4770K CPU @ 3.5 GHz – 4 Cores/8Threads) is employed.<br />
<strong>HEVC</strong> Software Encoder <strong>Performance</strong> for 4:2:2 10-bit Content<br />
We first measure encoding speed (fps) of <strong>Media</strong> <strong>Server</strong> <strong>Studio</strong> <strong>HEVC</strong> Software Encoder in TU1 (highest<br />
quality) mode and MPEG <strong>HEVC</strong> HM14 on 4:2:2 10-bit UHD test set. Results of these measurements<br />
comparing the two speeds are shown in Fig. 22A.<br />
Encoding Speed (fps)<br />
0.6<br />
0.5<br />
0.4<br />
0.3<br />
0.2<br />
0.1<br />
0.0<br />
<strong>Performance</strong> Comparison of <strong>Media</strong><strong>Server</strong><strong>Studio</strong> TU1 Mode and HM14.0<br />
0.55 (138x)<br />
UHD4K<br />
Resolution<br />
0.004<br />
<strong>Media</strong><strong>Server</strong><strong>Studio</strong> TU1<br />
<strong>HEVC</strong> HM14.0<br />
<strong>Deliver</strong> <strong>High</strong> <strong>Quality</strong>, <strong>High</strong> <strong>Performance</strong> <strong>HEVC</strong> <strong>via</strong> <strong>Intel®</strong> <strong>Media</strong> <strong>Server</strong> <strong>Studio</strong><br />
Figure 22A Average encoding speed comparison of 4:2:2 10-bit content on <strong>Media</strong> <strong>Server</strong> <strong>Studio</strong> TU1 mode<br />
with HM14<br />
65<br />
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