Hi Adam,
Thanks for your feed-back.
The solution you proposed is perfect.
It is not exacly lip synch, more puppet sync, but on some occasions this suffies. Not all projects aim for a Pixar-level of accuraty. Most of the occasions this is a budget problem.
Now it only comes down to fine-tuning of the (cutoff & compression) settings for the right behaviour of the lips.
This solution is really good because it’s cheaper than buying additional software for lip syncing.
Thanks again for helping!
Best regards,
Piet