Namer has a new configuration section now. If your feeds download duplicate movies you can configure namer's watchdog folder to retain the movie you want (currently namer retains them all) - namer can select one movie to retain.
First you can set a maximum resolution, if the video is above that resolution it will only be retained if no other options exist (-1 for no max size).
Namer will first select the longest video - to avoid sample videos, followed by the best resolution up to and including the resolution configured, then followed by configured video codecs, defaulting to ['hvec', 'h264'].
This all has to be turned on will a boolean flag. See the sample namer config in this project for more info.