Fix tests if value is 0
correctly parse input of get_video
Fix encoding error in make_man
Use C local
Revert "Fix encoding error in make_man"

This reverts commit fc9a503f6c0e304a8161766fb40e6ccbb124a12f.
It breaks manpage
Fix encoding of copyright
Reuse termcolor's environment variable to disable colors
Disable colors while making manpages