Did you read the guide?
Yes
What is the base version number of Motion being used?
4.5.x
What was the install method?
Installed via package tool
What is base architecture?
Other
What is the distro being used?
Debian
Disto version number
Mint 21.1
Camera type(s) being used?
Other
Describe the issue/problem and steps to reproduce
Cannot install the .deb file, the error is:
Dependency is not satisfiable: libavcodec57 (>= 7:3.4.11)libavcodec-extra57 (>= 7:3.4.11)
Motion log output at log_level 8