Paul B Mahol (12022-03-04):
> No, wait must stop.
> 
> The issue is that EOF is never reported if there is >1 frame left in
> queue before EOF for filters that do not use .activate (and use >1
> inputs).

Let me tell it one more time:

split should not require switching to activate to work, including EOF.
There is a bug somewhere, and your analysis is not enough to know
exactly where.

Until I understand what is going on exactly and if there is a framework
bug that needs fixing, I demand you hold.

-- 
  Nicolas George