The FXScript Reference

For Final Cut Pro created by Joe Maller

fieldprocessing

FXScript Reference : FXScript Predeclared Variables :

fieldprocessing

FieldProcessing returns either a 0 or 1, depending on whether or not the processed source clip is interlaced. Undocumented in the FCP manuals, the fieldprocessing predeclared variable appears to have been added in FCP 3.0.

Adding one to this value make a useful tool for correcting frame/field variable values such as frame and duration. Before this, an NTSC/PAL safe solution was to divide by integer(AspectOf(dest) + 0.5).

contributed by: Joe Maller on 19 Oct, 2002, 00:10, Applies to: FCP 3.04

Additional Notes

Generators with fields
by Joe Maller on 14 Apr, 2005 14:57, Applies to: FCP 4.5 (HD) from: 70.23.216.174

In Generators, this value always refers to the parent timeline's interlace setting regardless of whether or not the generator enabled interlaced rendering with informationFlag("hasfields"). Because of that, which is consistant though counterintuitive, (fieldprocessing+1) can not be relied upon for interlace-correcting dimensions or other data. Use integer(aspectOf(dest) instead

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