Download JM Reference Software Manual (JVT-AE010)

4. Encoder Parameters
Description: Sets the value of the syntax element weighted_pred_flag and enables explicit weighted
prediction for P slices. A simple model, based on picture DC values is used for estimating weights.
Default value is 0 (disabled).
Note: This parameter is ignored when RDPictureDecision is used.
4.2.50.2 WeightedBiprediction
Class: Numeric (Integer)
Description: Sets the value of the syntax element weighted_bipred_idc and enables weighted prediction
for B slices.
Options:
0
1
2
Disabled (default).
Explicit Weighted Prediction.
Implicit Weighted Prediction. Weights are based on POC distances.
Note: This parameter is ignored when RDPictureDecision is used.
4.2.50.3 UseWeightedReferenceME
Class: Boolean
Description: Use weighted references for motion estimation. Default value is 0 (disabled).
4.2.50.4 WPMethod
Class: Boolean
Description: Use DC based (0: default) or Least Mean Square (LMS) method (1) for weighted prediction.
4.2.50.5 WPIterMC
Class: Boolean
Description: Use DC Iterative Motion compensated based weighted prediction method. Default value is 0
(disabled)
4.2.50.6 EnhancedBWeightSupport
Class: Boolean
Description: Use LMS method for B slice weighted prediction. Default value is 0 (disabled).
4.2.50.7 WPMCPrecision
Class: Numeric (Integer)
Description: Improved Motion Compensation Precision using WP based methods. Clones WP references
with slightly modified rounding offsets (Requires RDPictureDecision and GenerateMultiplePPS) :
Options:
0
1
2
Disabled (default).
Up to one additional coding pass. Ref0 is 0, ref1 is 0 with a -1 offset
Up to two additional coding passes. (1) Ref0 is 0, ref1 is 0 with a -1 offset, (1) Ref0
is 0 with a -1 offset, ref1 is 0
H.264/14496-10 AVC Reference Software Manual
Page 4-20