| If |HPB-VPB| ≤ 40 Then |
| best_INTER_mode = SMB8×8 |
| // (sub-macroblock is not divided into sub-partitions) |
| Else If HPB−VPB > 40 Then |
| If VSB1 > 20 OR VSB2 > 20 Then |
| best_INTER_mode = SMB4×4 |
| // (sub-MB is divided into four 4×4 sub-partitions) |
| Else |
| best_INTER_mode = SMB8×4 |
| // (sub-MB is divided into two 8x4 sub-partitions) |
| Else If VPB − HPB > 40 Then |
| If HSB1 > 20 OR HSB2 > 20 Then |
| best_INTER_mode = SMB4×4 |
| // (sub-MB is divided into four 4×4 sub-partitions) |
| Else |
| best_INTER_mode = SMB4×8 |
| // (sub-MB is divided into two 4×8 blocks) |