how to change a clip quantization in real time?

So that is the question:

can we change the inner clip quantization via m4l or whatever in a dynamic way? (no mouse, etc.).

I want to be able to trigger a clip from its beggining when specific message arrives but it must be quantizised to 1/16 , and after receiving that message, its quantization must be 4n for example.

Any idea? (using move_clip_position does not work because it does not play from zero the clip --- see other threads about that).

thank you !!!