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<strong>Intel®</strong> <strong>Media</strong> <strong>Server</strong> <strong>Studio</strong> <strong>HEVC</strong> Software Encoder <strong>Quality</strong><br />
Evaluation for 4:2:2 8-bit Content<br />
In this section, we first describe a test methodology employed for evaluating quality and then report on<br />
relative quality measurements for the <strong>Media</strong> <strong>Server</strong> <strong>Studio</strong> <strong>HEVC</strong> Codec with respect to MPEG <strong>HEVC</strong> HM14<br />
Codec, well known as a high quality reference albeit impractically slow.<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 />
<strong>Quality</strong> Evaluation Tests for 4:2:2 8-bit Content<br />
For the purpose of quality evaluation, two test sets of 4:2:2 8-bit content, one for 1080p, and the other<br />
one for 720p resolution are used with each test set consisting of 3 publicly available challenging video test<br />
sequences. Further for each test sequence, 4 well-spaced quantizer (QP) values are selected such that<br />
<strong>HEVC</strong> encoding for each sequence generates bit-rates in a wide but moderate range, avoiding extreme<br />
values.<br />
Specifically, Table 11A shows selected <strong>High</strong> Definition (HD1080p) test set, and Table 11B shows<br />
Intermediate Definition 720p (720p) test set.<br />
Table 11A HD1080p Test Set and Quantizers used for Codec RD characteristics measurement<br />
HD1080p Test Sequence Resolution frm rate #frm<br />
Quantizers used for RD char.<br />
Qp1 Qp2 Qp3 Qp4<br />
1 RushFieldCuts 1920x1080 30 570 22 27 32 37<br />
2 Red_Kayak 1920x1080 30 570 22 27 32 37<br />
3 TouchDownPass 1920x1080 30 570 23 26 30 34<br />
From 4:2:2 8-bit 1080p test sequences referred to in Table 11A, all three sequences, ie, RushFieldCuts,<br />
Red_Kayak, and TouchDownPass can be obtained from http://media.xiph.org/video/derf/.<br />
Table 11B 720p Test Set and Quantizers used for Codec RD characteristics measurement<br />
720p Test Sequence Resolution frm rate #frm<br />
Quantizers used for RD char.<br />
Qp1 Qp2 Qp3 Qp4<br />
1 CrowdRun 1280x720 50 497 26 30 34 38<br />
2 Ducks_take_off 1280x720 50 500 28 31 35 37<br />
3 Park_joy 1280x720 50 500 26 29 33 37<br />
52<br />
From 4:2:2 8-bit 720p test sequences referred to in Table 11B, all three sequences CrowdRun,<br />
Ducks_take_off, and Park_joy can be obtained from http://media.xiph.org/video/derf/.
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