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<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 />
PSNR (dB)<br />
Figure 6D2 RD results of SD/XD scenes with the biggest and the smallest quality difference wrt HM14 for<br />
<strong>Media</strong> <strong>Server</strong> <strong>Studio</strong> TU4 mode<br />
To summarize, the luma BD rate percentage bitrate difference of the <strong>Media</strong> <strong>Server</strong> <strong>Studio</strong> <strong>HEVC</strong> in various<br />
modes with respect to an ideal (but slow) HM14 reference is as follows.<br />
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BasketballDrillText Y<br />
<strong>HEVC</strong> HM14.0<br />
<strong>Media</strong><strong>Server</strong><strong>Studio</strong> TU4<br />
0 2000 4000 6000<br />
BitRate (kbps)<br />
PSNR (dB)<br />
TU1 mode on average is only 0 - 2% worse in BD rate (while around 125 times faster, as shown later) as<br />
compared to HM14 on all test sets. This is highest quality mode in <strong>Media</strong> <strong>Server</strong> <strong>Studio</strong>.<br />
TU4 mode on average is only 16 - 19% worse in BD rate (while around 950 times faster, as shown later)<br />
as compared to HM14. This mode represents excellent tradeoff of quality vs speed.<br />
TU7 mode on average is 33 - 39% worse in BD rate (while around 2450 times faster, as shown later) as<br />
compared to HM14. This is the fastest software only mode in <strong>Media</strong> <strong>Server</strong> <strong>Studio</strong>.<br />
TU7gacc mode on average is also 35 - 44% worse in BD rate rate (while being around 3150 times faster,<br />
as shown later) as compared to HM14 on all test sets. This is the fastest mode in <strong>Media</strong> <strong>Server</strong> <strong>Studio</strong><br />
and combines TU7 software mode with <strong>Intel®</strong> Graphics Acceleration.<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 />
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Soccer Y<br />
<strong>HEVC</strong> HM14.0<br />
<strong>Media</strong><strong>Server</strong><strong>Studio</strong> TU4<br />
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BitRate (kbps)<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 4:2:0 8-bit Content<br />
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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.
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