From which service has Infuse 4 his metadata?

Always there is a series or a film, for which there are no metadata, or only in English (i prefer German). So from which service has Infuse 4 his metadata, to enter there the necessary Infos.
Is this for series TheTVDB.com and for movies tmdb.com? Or both tmdb.com? Or can I choose this itself somewhere?

Movies come from TMDb and TV shows come from TheTVDb.

Strange that InFuse Pro seems to not find episode thumbnails for almost all newly added shows, even though they are present at TheTVDb?