In the "Presets > Paint Patch," I selected the Patch "Wet Ink Dir Flow" in the "Wet Ink" Category.
I simply applied three strokes on the white canvas. The above image is the result of that process as a still image.
Then I had to "Stop Movie To File." (This was the completion of the QuickTime movie Three_strokes.mov.)
Also, the "Record" box in the Paint Action window had to be deselected and this PASeq named and exported.
Now that first image is also a QuickTime movie, the first movie can now be processed with the very Paint Action Sequence ("PASeq") that already had created its parent image.
Time to import the original Paint Action Sequence. (It may still be available in the Paint Action window.)