I'm teaching a lot this quarter (18 contact hours), + prep/grading + research + service work for college...leaves me pretty exhausted at the end of each day. It's so tempting to skip making new lecture videos & posting to Youtube. But...
It helps my students so much to have pre-class videos!
I do introduce some new material in class, but not a lot. I do not do a pure "flipped classroom" approach, either.