zoompan filter issue

[artschekoff]

Hi Folks!

Im trying to apply zoompan filter to my stream, using this awesome library.

I use this command:

And when it is done with render - I'm just getting video without effect applied.

I checked what happens under the hood and thats what I got:

Final command looks broken, because argument zoom+0.0015 has not been passed correctly.

It supposed to be z='zoom+0.0015'

Are there any workarounds? Thanks!