JDL_UnfoldFieldsVertical-Question

[Nikos]

My source is PAL intelaced bottom field.
I must use AssumeBFF() before
JDL_UnfoldFieldsVertical(true) or not.
The output clip will be bottom field?

AssumeBFF() # usefull or not.
# or AssumeTFF() if my source is TFF
JDL_UnfoldFieldsVertical(true)
myfilter
JDL_FoldFieldsVertical(true)

[stickboy]

JDL_UnfoldFieldsVertical doesn't care about field order; even scanlines always will be on top, and odd scanlines always will be on the bottom.

That said, using AssumeTFF/AssumeBFF won't hurt, and that order should be preserved after you unfold/fold.

[Nikos]

Thanks stickboy you are very informative.