According to documentation the option "Weghted Prediction for P-frames" can accept the following values:
1. Disabled,
2. Blind Offset,
3. Smart Mode.
But the corresponding combo-box in Avidemux 2.6.1 offers other values:
A. Disabled
B. Weighted References
C. Weighted References + Duplicates
What is that? Are "2"="B" and "3"="C"?