Deliver High Quality High Performance HEVC via Intel® Media Server Studio

Quality vs Performance Tradeoff for TU Modes for 4:2:2 10-bit Content
We now discuss results of Codec Quality vs Encoding Performance tradeoffs for all modes for Media
Server Studio HEVC Encoder for the UHD4K test set tested.
Fig. 23 shows a comparison of Quality (negative BD rate percentage difference wrt HEVC HM14) vs
Encoding Performance (fps) for the test set at each of the three TU1, TU4, and TU7 encoding modes. The
y-axis basically shows the quality difference in terms of loss of BD rate percentage difference in the
process of increasing speed up of the encoder in going from TU1 to TU4 to TU7 operating points.
To summarize, for 4:2:2 10-bit content, encoding performance-wise Media Server Studio HEVC codec in
different modes achieves the following speedup of HEVC encoding on 4 core Reference PC platform
specified earlier.
BDRate %age dif wrt HM14.0
0
-5
-10
-15
-20
-25
-30
Quality vs Performance Y
0 2 4 6 8 10 12
TU4
TU7
UHD4K
Deliver High Quality, High Performance HEVC via Intel® Media Server Studio
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Encoding Speed (fps)
Figure 23 Quality vs Encoding Speed Tradeoffs for 4:2:2 10-bit content for Media Server Studio HEVC Encoding TU
modes
For 4:2:2 10-bit UHD4K test set, Media Server Studio encoder in TU1, TU4, and TU7 modes,
correspondingly on average provides 0.55 fps, 3.5 fps, and 9.7 fps. This reflects corresponding
speedup factors wrt HM14 (single threaded) of 137, 880, and 2430.
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