I was thinking about how to combine frame-by-frame animation with tweening and my idea was to have a template group with subgroups (let’s say 5 of them) which have their opacity turned on only for one frame. I copy-paste this template to be as long in time as needed. Of course I have to set up the delay for the roots of the templates accordingly (so that exactly one of them is visible at a time), but at least I don’t have to set them up for every frame. In the end I just draw into the subgroups with the built-in Synfig tools.
Similar technique could be used for facial animation, but in this case I would have to ffwd and rewind time to seek in the “library” of images. The problem is that time flows by itself as well so I have to change the delay even if I want to keep the same “library image” shown.
Can anyone give a simpler solution to these two tasks?
*especially that even when I select an empty group, newly created objects won’t be put into that group.
My conclusion is that this isn’t a viable method in Synfig, because the time delay applied on the templates will mess up the onion skin, so you’ll have no guideline while fighting with the groupings and layer order makes it more complicated than neccesary.