Yeah, I know it was done in 24fps film (the title wobbles a bit and has some specks, telltale sign for being film). I've seen it on both my 1994 VHS reprint and a 1998 USA channel airing when I was 5. I know the DVDs (2002 Trilogy batches and the 2009 reprints) and the BD of all three films use the negative prints (where it is not on). The reissue thing I mentioned because I think the first film was in a double bill with select screenings of II when it came out, same with III (for BTTF II). So its possible it appeared on those if one came across 35mm reissue prints of ether film. I know its a somewhat minor thing that everyone is talking about, but if something on a film existed at one point that was cut from later release, its worth inquiring upon and preserving.