kdenlive
KDE's non-linear video editor.
TLDR
Start the video editor
$ kdenlive
Open a specific file
$ kdenlive [path/to/file].kdenlive
Set a specific path for an MLT environment
$ kdenlive --mlt-path [path/to/directory]
Set a specific log level for an MLT environment
$ kdenlive --mlt-log [verbose|debug]
Display help
$ kdenlive --help
Display version
$ kdenlive --version