What is the longest convential film- i mean with a plot. LOTR ROTK is quite long, so is Titanic
Fanny and Alexander is amazing and its around 5 hours...
perhaps not the longest, but some long ones that I own on DVD are:Satantango by Bela Tarr (750 min)Berlin Alexanderplatz by Rainer Werner Fassbinder (910 min for USA cut)