That was even a thing? Now that's interesting.
Dood... shit took dedication. Then again, the industry itself was far more interesting, even though I got in just as things started to become quite pussified.
All right bitches, here we go. The way it worked was, since your copies would be daisy-chained many generations to people you had never met but traded VHS tapes with through
FIDOnet, you'd want to subtitle off of LaserDisc (and record onto SVHS).
So, you'd need an LD player. I assume you know what that is.
You'd also need an Amiga computer. I had the 1200, shown below:
Okay, cool. Well, what the fuck does that do? Nothing, yet, except run the subtitling software. TurboTitle was in the early days (late 80's to very early 90's). When I started in 1993,
JacoSub was the defacto standard.
Finally, you need a genlock. I had the SuperGen, which did dissolves/fades. Look at those fonts!
So generally, you need to have all that stuff make love in RCA cable orgy fashion. The genlock interfaces to the computer. The subtitling software displays the opaque text... the LD video source is going into the Genlock, and the composite product is going out to the VCR. Voila: Subtitled anime (or whatever).
The real fun part is timing everything. Generally you'd have an untimed script, with each spoken "line" representing a line in the show. When the next character talks, hit space, and their line shows up as a subtitle. When it was done, the software had generated the timed script (down to 10th of a second). Run that timed script again and record it on VHS. Then play it back adjusting the times in a text file as you go. If you were pro level, you could get one done in three runs. I definitely had the version of a 1CC back then. I did 96 episodes of Maison Ikkoku, which took two years. Of course, I burned out, and to boot it was stupid hard to get laid w/ all that shit in my house. I did pull it off though, and a handful of GF's even liked the quirky hobby.
Anime Cons in the 90's? Very, very little cosplay. LOTS of weirdos in rooms with 20 VCRs recording shit.