Although the Romantic era is my weak spot with regards to piano repertoire, it sounds too playful to be German IMO. So, I’m thinking it’s pre-1910 French, but probably not before 1850 (then again, take out the pedaling or play this on a harpsichord and it would almost sound like Scarlatti or Soler, but I think the chromaticism is too rich for this to be a possibility).
From possible to least likely assuming a French composer: Farrenc, Faure, and Delibes, then d’Indy, Chaminade, Dukas, and Chabrier. Doubtful: Gounod, Godard, and Dukas, but certainly not Vierne, Pierne, Satie or Alkan. Boulez and Rameau are right out!

In addition, it sounds more like it would be something such as an etude as opposed to a more substantial work such as a sonata. I leave out any big names such as Ravel, otherwise someone would have probably already recognized it by now.
Also consider Albinez (Spanish) or Ibert (mid-century).