Moviefilein reference to filename?

Beginners
1

is there a way to reference MovieFileIn filename ?
would have expected to find it in the chopinfo
use case: to autosave referenced to input file

2

moviefilein1.par.file.evalFile()

3

thankyou fro the hint - but it came back with
NameError: name ‘moviefilein1’ is not defined
but got me in the correct direction

a = op('moviefilein1').par.file.evalFile()
print(a.ext)
print(a.baseName)
print(a.exists)
4

Was just an example name! Use the path to your operator.