Maybe you misread/misunderstood my original post.
The 8mm video tapes I am copying to computer are video. 8mm is a size of video tape. Came out awhile back now, guess over 25 years ago to make small camcorders. Also, made 8mm video systems with tuner/timers to use like the older Beta and VHS, not to mention Sanyo V-cord and Quasar time machine and Cartrivision 1/2 inch home video recorders/players.
Last time I tried to watch my old 8mm and super 8mm FILM, the sound went out on projector, hadn't used it for quite a while. Now what I read in magazine was to adjust speed of projector off of standard to eliminate flicker, then once recorded, adjust speed back on computer. Of course, if you had bought the GOKO machine, it took care of it.
Since I was heavy into movie film, maybe my post was misread in that I was giving my film history. Sound striping, recording was on film. Remember how a magnetic stripe was glued to the side of the film?