Table 4 ΔTime, ΔPSNR, and ΔBitrate for the compared sequences (15 Hz scenario)
Sequence | RD performance of the WZ/H.264 video transcoder—15 fps | ||||||||
|---|---|---|---|---|---|---|---|---|---|
GOP 2 | GOP 4 | GOP 8 | |||||||
ΔBitrate (%) | ΔPSNR (dB) | TR (%) | ΔBitrate (%) | ΔPSNR (dB) | TR (%) | ΔBitrate (%) | ΔPSNR (dB) | TR (%) | |
Foreman | 7.94 | −0.308 | 92.02 | 8.30 | −0.314 | 91.96 | 8.46 | −0.303 | 91.69 |
Hall | 0.98 | −0.046 | 92.70 | 1.09 | −0.048 | 92.46 | 0.93 | −0.042 | 92.06 |
Mobile | 1.19 | −0.055 | 93.84 | 1.50 | −0.073 | 93.65 | 1.32 | −0.063 | 93.41 |
Coastguard | 4.81 | −0.215 | 93.95 | 5.36 | −0.238 | 93.99 | 4.95 | −0.216 | 93.70 |
City | 3.21 | −0.123 | 93.89 | 2.72 | −0.101 | 93.78 | 2.50 | −0.099 | 93.86 |
Crew | 7.49 | −0.310 | 92.56 | 8.30 | −0.327 | 92.63 | 8.77 | −0.327 | 92.69 |
Harb | 1.52 | −0.068 | 94.04 | 1.23 | −0.059 | 93.99 | 1.47 | −0.068 | 93.97 |
Flower | 1.62 | −0.073 | 93.67 | 1.40 | −0.064 | 93.65 | 1.26 | −0.058 | 93.61 |
Mean | 3.60 | −0.150 | 93.33 | 3.74 | −0.153 | 93.26 | 3.71 | −0.147 | 93.12 |