$ sudo add-apt-repository ppa:openshot.developers/ppa
$ sudo apt update
$ sudo apt install openshot-qt python3-openshot
The following packages have unmet dependencies: libopenshot23 : Depends: libavcodec58 (>= 7:4.4)
Depends: libavformat58 (>= 7:4.4)
libqt5webenginecore5 : Depends: libavcodec58 (>= 7:4.4)
Depends: libavformat58 (>= 7:4.4)
E: Unable to correct problems, you have held broken packages.