I tried several and none could make decent sound and in sync with the video.
Kazam just worked and works with gnome3 with no configuring.
The others I could not get the sound to be loud enough or it was static filled.
I think it should be the default install.
How can that be submitted as an idea?
As this guy says kazam works while the others had issues.sudo add-apt-repository ppa:kazam-team/stable-series
sudo apt-get update
sudo apt-get install kazam