From: An R-D optimized transcoding resilient motion vector selection
Rate control | Fixed QP (RC = OFF) | RC = ON | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Video size | Test sequence | Bit rate reduction (BRR%) | -BDR% | -BDR% | ||||||
Enc | Transcoding | Avr. | Â | Â | ||||||
QP1 | QP2 | Â | Â | Â | ||||||
20 | 24 | 28 | 32 | 36 | 40 | Â | Â | Â | ||
QCIF | Akiyo | 0.9 | 9.6 | 17.6 | 25.2 | 30.2 | 33.0 | 19.4 | 19.7 | 16.2 |
 | Carphone | 2.7 | 13.1 | 21.8 | 29.5 | 33.7 | 36.4 | 22.9 | 23.9 | 20.7 |
 | City | 5.8 | 17.1 | 28.4 | 38.9 | 46.3 | 49.7 | 31.0 | 30.1 | 26.2 |
 | Claire | 3.8 | 11.3 | 16.8 | 22.3 | 24.4 | 25.1 | 17.3 | 17.7 | 12.8 |
 | Coastguard | 6.8 | 15.9 | 29.6 | 46.7 | 59.5 | 66.2 | 37.4 | 36.2 | 36.8 |
 | Container | -3.5 | 7.6 | 17.5 | 28.1 | 40.1 | 47.9 | 23.0 | 22.7 | 22.6 |
 | Crew | 9.8 | 18.0 | 27.2 | 36.3 | 44.4 | 48.9 | 30.7 | 29.5 | 27.6 |
 | Football | 2.6 | 6.6 | 13.8 | 24.8 | 37.5 | 47.9 | 22.2 | 19.2 | 23.1 |
 | Foreman | 2.9 | 14.0 | 24.9 | 33.9 | 39.5 | 41.6 | 26.1 | 26.3 | 23.7 |
 | Garden | 1.7 | 3.7 | 7.8 | 15.5 | 28.9 | 44.2 | 17.0 | 15.1 | 20.0 |
 | Grandma | 3.2 | 14.1 | 23.8 | 33.0 | 37.8 | 38.7 | 25.1 | 23.4 | 18.7 |
 | Hall monitor | 2.1 | 20.2 | 29.2 | 35.5 | 40.8 | 44.0 | 28.6 | 30.4 | 27.1 |
 | Harbor | 7.4 | 13.1 | 22.9 | 37.7 | 51.7 | 60.9 | 32.3 | 31.1 | 34.4 |
 | Highway | 0.9 | 19.3 | 31.6 | 40.0 | 43.6 | 42.5 | 29.7 | 31.1 | 30.1 |
 | Ice | -1.6 | 4.5 | 10.1 | 16.3 | 22.3 | 28.7 | 13.4 | 14.2 | 13.5 |
 | Miss am | 2.4 | 11.0 | 17.5 | 21.4 | 24.4 | 25.0 | 16.9 | 18.2 | 15.0 |
 | Mobile | 1.1 | 2.4 | 6.7 | 15.7 | 31.3 | 49.3 | 17.7 | 15.7 | 20.3 |
 | Mother&dgh1 | 5.7 | 17.9 | 27.0 | 34.2 | 37.5 | 39.1 | 26.9 | 26.5 | 20.7 |
 | Mother&dgh2 | 3.3 | 14.0 | 25.7 | 35.9 | 42.4 | 45.1 | 27.7 | 26.7 | 23.1 |
 | News | 0.8 | 6.3 | 12.2 | 17.7 | 23.5 | 26.9 | 14.6 | 14.4 | 12.8 |
 | Paris | -0.4 | 3.7 | 8.9 | 15.7 | 24.1 | 31.0 | 13.9 | 13.1 | 13.7 |
 | Salesman | 2.5 | 9.8 | 18.2 | 26.2 | 33.1 | 36.1 | 21.0 | 19.7 | 13.3 |
 | Silent | 4.5 | 13.2 | 20.2 | 27.3 | 31.9 | 35.2 | 22.0 | 20.9 | 16.0 |
 | Stefan | 2.0 | 3.9 | 7.3 | 13.6 | 25.3 | 42.3 | 15.7 | 14.4 | 16.7 |
 | Students | 1.0 | 9.5 | 17.4 | 25.7 | 31.9 | 35.3 | 20.1 | 18.7 | 14.2 |
 | Suzie | 6.5 | 20.8 | 31.8 | 39.7 | 44.4 | 45.5 | 31.4 | 31.7 | 24.6 |
 | Tennis | 3.7 | 15.7 | 28.0 | 39.9 | 48.5 | 52.7 | 31.4 | 29.1 | 23.4 |
 | Trevor | 3.4 | 10.8 | 18.4 | 26.5 | 32.6 | 36.0 | 21.3 | 20.3 | 18.0 |
 | Walk | 7.7 | 13.9 | 21.6 | 30.7 | 38.6 | 43.1 | 25.9 | 25.1 | 24.8 |
 | Average | 3.1 | 11.8 | 20.1 | 28.8 | 36.2 | 41.3 | 23.5 | 22.9 | 21.0 |
CIF | Akiyo | 4.8 | 15.2 | 23.5 | 30.3 | 34.0 | 35.2 | 23.8 | 24.7 | 18.8 |
 | Bus | 6.8 | 15.5 | 24.1 | 35.0 | 44.9 | 52.0 | 29.7 | 28.7 | 28.8 |
 | City | 6.0 | 17.7 | 30.2 | 42.8 | 51.2 | 55.4 | 33.9 | 33.0 | 30.9 |
 | Coastguard | 11.3 | 19.7 | 31.8 | 48.2 | 61.6 | 68.8 | 40.2 | 39.8 | 42.2 |
 | Container | 0.4 | 22.1 | 37.8 | 51.2 | 59.7 | 63.5 | 39.1 | 39.5 | 35.9 |
 | Crew | 11.5 | 20.5 | 29.0 | 38.2 | 45.0 | 48.0 | 32.1 | 31.2 | 27.2 |
 | Crew | 9.8 | 20.4 | 29.5 | 37.6 | 42.7 | 43.7 | 30.6 | 30.6 | 24.5 |
 | Foreman | 5.3 | 21.4 | 31.6 | 38.7 | 42.3 | 42.9 | 30.4 | 31.2 | 26.7 |
 | Hall monitor | 4.0 | 35.2 | 47.5 | 54.3 | 57.5 | 57.5 | 42.6 | 46.9 | 40.6 |
 | Harbour15fps | 10.3 | 16.8 | 26.2 | 40.3 | 54.1 | 63.3 | 35.2 | 34.0 | 38.2 |
 | Harbour30fps | 9.0 | 15.5 | 25.2 | 39.1 | 52.2 | 60.3 | 33.5 | 32.5 | 35.1 |
 | Ice | 2.1 | 8.7 | 14.4 | 20.7 | 24.7 | 28.4 | 16.5 | 17.5 | 15.7 |
 | Ice | 1.1 | 8.0 | 14.4 | 19.9 | 24.0 | 25.9 | 15.5 | 16.8 | 14.2 |
 | Mobile | 1.6 | 6.3 | 12.9 | 23.7 | 36.9 | 47.0 | 21.4 | 20.8 | 26.7 |
 | Mother | 7.9 | 22.0 | 30.4 | 36.0 | 38.2 | 39.0 | 28.9 | 29.5 | 21.8 |
 | News | 2.8 | 9.9 | 15.7 | 21.4 | 26.5 | 29.4 | 17.6 | 18.0 | 15.7 |
 | Paris | 1.6 | 8.2 | 14.7 | 23.7 | 32.2 | 37.8 | 19.7 | 19.3 | 19.9 |
 | Sign Irene | 6.3 | 15.4 | 24.3 | 33.4 | 40.3 | 42.7 | 27.1 | 27.6 | 24.9 |
 | Silent | 5.8 | 18.7 | 27.8 | 35.8 | 41.0 | 42.8 | 28.6 | 27.4 | 21.4 |
 | Stefan | 5.2 | 10.3 | 17.0 | 27.3 | 39.9 | 49.7 | 24.9 | 24.1 | 28.9 |
 | Student | 4.1 | 16.3 | 26.2 | 33.9 | 39.1 | 41.8 | 26.9 | 26.5 | 22.4 |
 | Tempete | 4.2 | 10.5 | 19.0 | 31.2 | 43.1 | 50.2 | 26.4 | 25.6 | 24.5 |
 | Walk | 11.0 | 19.1 | 27.6 | 36.2 | 43.1 | 47.1 | 30.6 | 30.0 | 27.6 |
 | Average | 5.8 | 16.2 | 25.3 | 34.7 | 42.3 | 46.6 | 28.5 | 28.5 | 26.6 |
4CIF | City | 10.1 | 33.5 | 51.3 | 64.2 | 71.5 | 74.4 | 50.8 | 53.0 | 48.8 |
 | Crew | 12.8 | 33.2 | 44.7 | 52.6 | 56.8 | 56.6 | 42.8 | 44.3 | 36.9 |
 | Harbor | 14.4 | 27.9 | 40.5 | 52.6 | 60.9 | 66.3 | 43.8 | 43.6 | 40.9 |
 | Ice | 4.6 | 17.4 | 25.3 | 31.0 | 34.3 | 35.1 | 24.6 | 26.0 | 19.8 |
 | Soccer | 10.1 | 29.1 | 43.4 | 54.9 | 62.2 | 64.3 | 44.0 | 43.6 | 40.3 |
 | Average | 10.4 | 28.2 | 41.1 | 51.1 | 57.1 | 59.3 | 41.2 | 42.1 | 37.4 |
HD | Mobcal | 5.3 | 28.1 | 47.1 | 63.7 | 73.2 | 76.9 | 49.0 | 51.2 | 48.9 |
 | Parkrun | 6.3 | 14.1 | 24.8 | 39.0 | 54.2 | 67.0 | 34.2 | 32.2 | 35.1 |
 | Shields | 7.2 | 44.3 | 63.3 | 73.5 | 78.3 | 78.9 | 57.6 | 62.0 | 59.5 |
 | Stockholm | 7.6 | 45.5 | 69.9 | 78.2 | 80.8 | 80.7 | 60.5 | 64.2 | 59.0 |
 | Average | 6.6 | 33.0 | 51.3 | 63.6 | 71.6 | 75.9 | 50.3 | 52.4 | 50.6 |