From: Temporal scalable mobile video communications based on an improved WZ-to-SVC transcoder
QCIF sequences | WZ GOP | One layer (7.5 fps) | Two layers (15 fps) | Three layers (30 fps) | TR (%) | |||
---|---|---|---|---|---|---|---|---|
ΔBitrate (%) | ΔPSNR (dB) | ΔBitrate (%) | ΔPSNR (dB) | ΔBitrate (%) | ΔPSNR (dB) | |||
Foreman | 2 | 0.88 | −0.05 | 1.03 | −0.06 | 1.32 | −0.05 | −77.61 |
4 | 0.86 | −0.05 | 1.54 | −0.07 | 1.68 | −0.07 | −77.78 | |
8 | 0.54 | −0.03 | 0.90 | −0.04 | 1.01 | −0.04 | −78.00 | |
Hall | 2 | −0.01 | 0.00 | 0.08 | 0.00 | −0.04 | 0.00 | −78.34 |
4 | −0.01 | 0.00 | −0.01 | 0.00 | −0.02 | 0.00 | −78.37 | |
8 | −0.06 | 0.00 | 0.01 | 0.00 | 0.10 | 0.00 | −78.39 | |
CoastGuard | 2 | 0.14 | −0.01 | 0.16 | −0.01 | 0.25 | −0.01 | −78.10 |
4 | 0.14 | −0.01 | 0.24 | −0.01 | 0.23 | −0.01 | −78.17 | |
8 | −0.03 | 0.00 | 0.01 | 0.00 | −0.05 | 0.00 | −78.18 | |
Soccer | 2 | 0.41 | −0.02 | 1.12 | −0.05 | 0.98 | −0.03 | −75.68 |
4 | 0.48 | −0.02 | 1.05 | −0.03 | 1.20 | −0.03 | −77.19 | |
8 | 0.28 | −0.01 | 1.23 | −0.04 | 1.41 | −0.04 | −77.45 | |
Mean | 0.30 | −0.02 | 0.61 | −0.03 | 0.67 | −0.02 | −77.77 |