From: Temporal scalable mobile video communications based on an improved WZ-to-SVC transcoder
CIF 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 | 1.31 | −0.08 | 1.48 | −0.07 | 1.75 | −0.06 | −79.30 |
4 | 1.32 | −0.08 | 1.90 | −0.07 | 2.09 | −0.07 | −79.99 | |
8 | 0.82 | −0.04 | 1.42 | −0.05 | 1.78 | −0.05 | −80.17 | |
Hall | 2 | 0.10 | 0.00 | 0.08 | 0.00 | 0.08 | 0.00 | −81.26 |
4 | 0.12 | 0.00 | 0.09 | 0.00 | 0.13 | 0.00 | −81.44 | |
8 | 0.05 | 0.00 | 0.17 | −0.01 | 0.15 | −0.01 | −81.45 | |
CoastGuard | 2 | 1.47 | −0.07 | 1.44 | −0.06 | 1.43 | −0.05 | −80.98 |
4 | 1.42 | −0.07 | 1.56 | −0.06 | 1.46 | −0.05 | −81.03 | |
8 | 1.63 | −0.07 | 1.51 | −0.05 | 1.58 | −0.05 | −81.06 | |
Soccer | 2 | 1.54 | −0.06 | 2.46 | −0.10 | 2.86 | −0.10 | −75.90 |
4 | 1.50 | −0.06 | 2.15 | −0.08 | 3.39 | −0.09 | −78.13 | |
8 | 0.98 | −0.04 | 2.44 | −0.09 | 3.91 | −0.11 | −78.53 | |
Mean | 1.02 | −0.05 | 1.39 | −0.05 | 1.72 | −0.05 | −79.94 |