Not so obscure-- I have seen it broadcast on public television, more than once. I never read The Trial, though I did read Kafka's novel Coming To America (IIRC), which was not particularly good; of course, I've also read his short story, The Metamorphosis. I was not especially impressed with the film, based on The Trial-- Orson Welles' shared view on the matter, notwithstanding. While Welles was, no doubt, intelligent, that does not equate with having impeccable artistic tastes, or a superceding opinion, on all matters concerning film which (as goes for art, in general) is a medium for which any judgements are unavoidably, to an significant extent, a reflection of personal tastes. Of course, though, because of his success in the medium, people will be likely to defer to his judgement. If, however, success is synonymous with credibility in such matters, one could merely cite the opinion of Steven Spielberg or Kirk Cameron, both of whom have had far more film success than Welles' ever did (as have many others), and who likely differ from Orson, in their opinions. I regard Welles, as somewhat of a pretentious windbag. I would recommend to you, the 2008 film, Me and Orson Welles, except it seems, from what you've said, you have no way to view a movie, unless it is shown on TV. But keep an eye out, because television is where I had seen it.