I followed the trail here for W10 and P4:
NoSuchFieldError: frame on Processing4 · Issue #69 · hamoid/video_export_processing · GitHub
The above directs you to here:
GitHub - hamoid/video_export_processing at kotlinGradle
And I followed the Using the Library instructions.
I now get this instead of an error:
I have not installed FFmpeg to test if it works past this point.
UPDATE
I installed FFmpeg and it now saves a movie but it has this issue:
NullPointerException: it must not be null · Issue #72 · hamoid/video_export_processing · GitHub
Does this KotlinGradle branch work on the Mac?
:)